A M Grjibovski
Biographic Data
| ID | 772773 |
|---|---|
| NAME | A M Grjibovski |
| GIVEN NAMES | A M |
| FAMILY NAME | Grjibovski |
| SIGNATURE | GRJIBOVSKI A M |
| AFFILIATIONS | Botswana Geoscience Institute |
| VERIFIED | No |
| TOTAL WORKS | 75 |
| TOTAL CITATIONS | 89 |
| AUTHOR COUNT | 75 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 6 |
Survival of Stomach Cancer Patients in Western Kazakhstan
Introduction: Stomach cancer is the fourth most common cancer worldwide. Although there is a lot of international evidence on survival of stomach cancer patients, the data from Central Asia is still scarce. Aims: To study one- and five-years survival of stomach cancer patients and its correlates in Western Kazakhstan. Methods: All histologically confirmed cases of stomach cancer (ICD10 code: C16) registered from 2015 to 2019 in the Aktobe region,…
Blood Alcohol Concentration in 2006-2018 in the Sakha (Yakutia) Republic
Introduction: Excessive alcohol consumption has been recognized as a threat to the national security of the Russian Federation. Challenges in studying volume and pattern of alcohol consumption, registration and identification of cases of alcohol-associated deaths are among the reasons for insufficient data for prevention of alcohol-associated deaths. Decision-makers should be aware of alcohol-attributable mortality in their federal subjects to de…
Intelligent Data Analysis in Biomedical Research
Modern analytical tasks in biomedical research require increasingly sophisticated methods of data analysis. In recent years, the term data analysis is not only related to classical statistical tests for hypothesis testing and correlation analysis for studying associations between variables. Classification tree or decision tree analysis is getting more and more frequently used in biomedical research. In this paper we present the use of classificat…
The Use of a Populaiton-Based Birth Registry to Study Infant Mortality in an Arctic Russian Setting
The paper presents experience in probabilistic linkage of the records in the Arkhangelsk County Birth Registry with regional infant mortality data. Practical issues of the procedure of independent depersonalized datasets linkage are discussed. Two datasets have similar indirect identifiers that were used to match the records. The combined database contains information on maternal health and pregnancy outcome as well as infant health. Also, it inc…
Estimation Method of Contribution of Cause-Specific Mortality to Life Expectancy
An increase in life expectancy is one of the main strategic objectives declared by the Russian Federation. Thus, an understanding of how this objective can be achieved with available recourses in the most efficient way is warranted. We propose an automated method for estimating the contribution of cause-specific mortaLity to Life expectancy. To iLLustrate the proposed method, we used the data from primary mortality databases in the Krasnoyarsk re…
Multiple Comparisons in Biomedical Research
One of the most common but rarely discussed problems in Russian biomedical research is a problem of multiple comparisons. When a researcher performs pairwise comparisons of means in several groups the number of tested ststistical hypotheses increases leading to inflation of the alpha-error. In international scientific literature this issue is well-described and several solutions are offered. The aim of this article is to describe the problem of a…
Perception of the State of Emergency Due to Covid-19 by Medical Students and Staff in a Kazakhstani University
Aim: to assess perception of the state of emergency and associated restrictive conditions due to COVID-19 among medical students and university staff in a Kazakhstani setting. Methods. A crass-sectional study. Altogether 228 students and staff of the Pavlodar branch of the Semey Medical University participated in an online survey. The visual analog scales were used to study difficulties related to maintaining self-isolation/social distancing, the…
Analysis of Categorical Variables Using R
The article presents basic algorithms categorical data analysis using R package. Algorithms for the analysis of independent and non-independent nominal and ordinal data are presented
Research Electronic Data Capture (Redcap) for Building and Managing Databases for Population-Based Biomedical Studies
The paper presents the main principles of applying Research Electronic Data Capture (REDCap) system to data collection and data storage in population-based biomedical studies. Advantages and limitations of using REDCap as well as possibilities for obtaining intermediate reports, descriptive statistics and data management are presented from the point of view of research project logistics using the Eastern Siberia PCOS Epidemiology & Phenotype (ESP…
Prevalence and Prognostic Significance of Dysglicemia in Patients With Type 2 Diabetes Mellitus at the Stage of Decompensation of Chronic Cardiac Failure
The aim was to study the prevalence of dysglycemia and glycemic variability (GV) during hospitalization for chronic heart failure (CHF) decompensation and their effect on four-years survival. Methods: A retrospective analysis of the hospital records of 279 patients with type 2 diabetes mellitus (DM), hospitalized with CHF decompensation to the First City Clinical Hospital in Arkhangelsk was performed. Mann - Whitney tests were used for numeric va…
Medical Research in Kazakhstan as Perceived by Researchers, Health Managers and Practicing Physicians
The state of health research in the countries of the Commonwealth of Independent States has been called as drastic in a recent evaluation. Several efforts have been made to break isolation of Kazakhstan from international medical research, education and practice. We studied how researchers, health managers and practicing physicians perceive the current status of medical research in Kazakhstan. Methods: A cross-sectional study was performed at 3 r…
Potential Misclassification of Alcohol Intoxication as Cardiovascular Deaths in Yakutsk in 2007-2018
Aim: To study potential misclassification of deaths from alcohol poisoning as cardiovascular deaths in Yakutsk, Sakha (Yakutia) Republic, North-East Siberia. Methods: All deaths from 2007 to 2018 registered at the Bureau of Forensic Expertise (BFE) in Yakutsk comprised the study base (n = 9 708). Data on underlying cause of death, age, gender and blood alcohol concentration (BAC) were obtained from the medical records at the BFE. Proportions of c…
Dental Caries Prevalence and Experience in 10-14 Years Old Children in the Nenets Autonomous Area (Arctic Russia) in Relation to Mineral Composition of Drinking Water and Socio-Demographic Factors
Aim: to assess the prevalence and experience of caries among 10-14 years old children in the Nenets Autonomous Area (Arctic Russia) in relation to mineral composition of drinking water and socio-demographic factors. Methods. A cross-sectional study. Altogether, 308 schoolchildren were examined using standard WHO methodology. Caries experience was presented as a sum of decayed, missing and filled teeth (DMFT). Samples of drinking water were taken.…
Correlation and Simple Regression Analysis Using R
The article presents basic algorithms of R software using for correlation analysis and simple linear regression. Basic approaches to the interpretation of the results of analysis and evaluation of statistical regression models are presented
Visualization of Biomedical Data Using R
The paper presents basic principles of using R software for visualization of biomedical research data. Basic types of graphs and algorithms for graph creation are presented. Specification of using different graph types in implementation of different data types is described
Analysis of Continuous Data Using R
The article presents basic algorithms of R software using for continuous data analysis. The basic algorithms for comparing quantitative data of one, two and three or more independent and related samples using parametric and non-parametric criteria are presented
Basic Principles of Biomedical Data Analysis in R
The article presents basic principles of using R software for biomedical data analysis. Types of variables and main principles of their analysis are described. The algorithms for importing, inputting, transforming data, presenting results, working with vectors and tables are presented. The RStudio software using is presented as well
Schoolchildren’s Functional State Under Intensive Information Load at the Initial Adaptation Period to Educational Environment
The article presents basic algorithms of R software using for calculating descriptive statistics of biomedical data including the use specialized packages. Detailed examples of the use of R functions for description and visualization of quantitative and categorical data are given
Incidence of Children's Injury in the South Kazakhstan Region in 2012-2016
Introduction. Injuries represent one of the major challenges of modern public health being the third main killer in the European region according to WHO. In this paper we present the incidence of child injuries in the South Kazakhstan region (SKR) in 2012-2016. Methods. We calculated average gender-specific incidence rates of child injuries (0-17 years) for the abovementioned time period for all administrative-territorial units of the SKR using t…
The Use of International Reference Criteria for Anthropometric Indices for First-Graders in Southern Kazakhstan
The aim of study was to evaluate the prevalence of disorders of physical development in children in the South Kazakhstan region by using international criteria. The study included 1498 children between the ages of 6.5 and 7.5 years. Estimated prevalence of stunting, lack of weight gain, overweight and obesity with obesity and isolation was performed using standard techniques above 2007 and WH0-CDC-2000. The prevalence of stunting, underweight, ov…
The First Population-Based Injury Register in Russia
From 1 January 2015, the first Russian population-based injury register has been routinely used for registration of all traumas requiring medical assistance in the municipality of Shenkursk, Arkhangelsk region. It was built up on the injury registration model that was used in Harstad, Norway. The aims of the injury registry are to monitor injury rates and develop evidence-based preventive measures at the municipal level. The source of information…
Population-Based Medical Birth Registries as Tools for Birth Defects Surveillance and Investigation of Their Risk Factors
It is known that medical birth registries are valuable sources of information on birth defects. They are widely used for their monitoring and control. Currently, the medical birth registries which are established in Murmansk County allow to study the birth prevalence of birth defects and trends in prevalence since 1973, including the period of socio-economic transformations and changes in medical practice caused by introduction of prenatal screen…
The Population-Based Cancer Registry as a Resource for Research and Practical Healthcare
Population-based cancer registries collect a standardized dataset about all patients diagnosed with a malignancy who live in the defined territory covered by the registry, from initial diagnosis through investigation and treatment, to the eventual death of the patient. This enables estimation of the cancer burden and surveillance of trends over time, as the evidence base for cancer control policies. There are more than 300 population-based cancer…
Prevalence of Potentially Adverse Drug-Drug Interactions in Hospitals of West Kazakhstan
Consequences of medical drugs use have been a subject of scientific research, both in terms of long-term effect on the gene pool of populations and immediate effects on human health. Drug-drug interactions (DDI) is an important and still insufficiently recognized cause of medical errors and costs for the healthcare system. We have studied the prevalence and structure of DDI in hospitals of West Kazakhstan. We performed a retrospective analysis of…
Epidemiology of Gastric Cancer in Kazakhstan in 2005-2014
An analysis of the gastric cancer incidence, mortality, five-year survival rate and the frequency of early revealing in the Republic of Kazakhstan for the period 2005-2014 was performed. As a result of the study, a statistically significant trend in declining incidence (from 18.9 to 16.4 per 100 000 population) and mortality from (from 15.0 to 11.8 per 100 000 population) was revealed. The frequency of early detection of gastric cancer (I-II stag…
Types of Research in Health Sciences
This is an introductory article about the main methodological principles of research design in health sciences, characteristics of basic types of study designs using practical examples with the description of the methods of sample size calculation and statistical analysis of data. Detailed classification of research designs and basic principles of evidence-based medicine are presented in the article
Ecological Studies in Medicine and Public Health
In this article we present the main methodological principles of planning and performing ecological (correlation) studies as well as the principles of statistical analysis of data obtained in ecological studies. The theoretical background of this study design, its main advantages and disadvantages are presented. We also describe research questions that can be studied using ecological study design. Step by step instructions for statistical data an…
Cross-Sectional Studies
In this paper, we have described the main principles of cross-sectional studies planning and data analysis. A theoretical base for cross-sectional studies' design has been presented as well as advantages and disadvantages of this type of studies. We present the methods for sample size calculation and data analysis using statistical software. Calculation of confidence intervals using free software "Epi Info" and online calculators has also been pr…
Arkhangelsk County Birth Registry as an Inportant Source of Information for Research and Healthcare
The article presents a short review of already established birth registries worldwide and their value for public health and perinatal medicine. Implementation of Arkhangelsk County Birth Registry (ACBR) is presented in detail. Paper registration form contains information on maternal pre-pregnancy and pregnancy health status, reproductive history, data on folic acid and multivitamin intake as well as alcohol consumption and tobacco smoking before …
Panel- And Trend Studies in Medicine and Public Health
Attending cultural events and cancer mortality
Attendance at cultural events is associated with better survival and self-rated health. This study aimed to determine whether attendance at cinemas, theater, art galleries, live music shows, and museums was associated with cancer-related mortality. A randomly selected, cancer-free cohort of Swedish adults aged 25–74 years (n = 9011), formed in 1990–91, was followed up to 31 December 2003. The outcome measure was cancer-related mortality. The main…
Cohort Studies in Medicine and Public Health
The article presents the main methodological principles of planning, implementation and statistical analysis of data from cohort studies. Types of cohort studies, their main advantages and disadvantages, and practical examples of cohort studies in medicine and public health are also presented. We also present the main measures used in cohort studies, namely, the incidence, cumulative incidence, incidence density, absolute risk, relative risk, att…
The First Population-Based Injury Register in Russia
From 1 January 2015, the first Russian population-based injury register has been routinely used for registration of all traumas requiring medical assistance in the municipality of Shenkursk, Arkhangelsk region. It was built up on the injury registration model that was used in Harstad, Norway. The aims of the injury registry are to monitor injury rates and develop evidence-based preventive measures at the municipal level. The source of information…
The Population-Based Cancer Registry as a Resource for Research and Practical Healthcare
Population-based cancer registries collect a standardized dataset about all patients diagnosed with a malignancy who live in the defined territory covered by the registry, from initial diagnosis through investigation and treatment, to the eventual death of the patient. This enables estimation of the cancer burden and surveillance of trends over time, as the evidence base for cancer control policies. There are more than 300 population-based cancer…
Experimental Studies in Medicine and Public Health
In this paper we present the basics of planning, carrying out and statistical analysis of experimental studies. We describe the most common types of experimental studies, interpretation of results as well as the main advantages and disadvantages of these studies. Practical examples of experimental studies with step-by-step algorithms of sample size calculation and statistical data analysis using formulas and free software are presented. Moreover,…
Epidemiology of Injuries in Shymkent, Southern Kazakhstan
External causes are ranked as the third most common cause of death in Kazakhstan. At the same time, Kazakhstan has the highest mortality from traffic injuries in the world warranting development of preventive programs based on the main principles of evidence-based medicine. Given considerable heterogeneity between different regions of Kazakhstan, preventive programs should be based on the regional evidence. In this descriptive study we present a …
Quality of Outpatient Medical Services in Outpatient Facilities Received by Oncological Patients in Southern Kazakhstan
This article presents the results of a survey of 1734 outpatient patients with oncological diseases from South Kazakhstan region. Altogether, 34 multidisciplinary outpatient medical institutions were included into the survey. 72.1 (95 % CI: 70,0-74,2) % of the patients were satisfied with outpatient medical care. 15.7 % of the patients (95 % CI 14,1-17,5) were unsatisfied. Binary logistic regression revealed the factors which influenced dissatisf…
Estimation Method of Contribution of Cause-Specific Mortality to Life Expectancy
An increase in life expectancy is one of the main strategic objectives declared by the Russian Federation. Thus, an understanding of how this objective can be achieved with available recourses in the most efficient way is warranted. We propose an automated method for estimating the contribution of cause-specific mortaLity to Life expectancy. To iLLustrate the proposed method, we used the data from primary mortality databases in the Krasnoyarsk re…
Dental Caries Prevalence and Experience in 10-14 Years Old Children in the Nenets Autonomous Area (Arctic Russia) in Relation to Mineral Composition of Drinking Water and Socio-Demographic Factors
Aim: to assess the prevalence and experience of caries among 10-14 years old children in the Nenets Autonomous Area (Arctic Russia) in relation to mineral composition of drinking water and socio-demographic factors. Methods. A cross-sectional study. Altogether, 308 schoolchildren were examined using standard WHO methodology. Caries experience was presented as a sum of decayed, missing and filled teeth (DMFT). Samples of drinking water were taken.…
Prevalence of Potentially Adverse Drug-Drug Interactions in Hospitals of West Kazakhstan
Consequences of medical drugs use have been a subject of scientific research, both in terms of long-term effect on the gene pool of populations and immediate effects on human health. Drug-drug interactions (DDI) is an important and still insufficiently recognized cause of medical errors and costs for the healthcare system. We have studied the prevalence and structure of DDI in hospitals of West Kazakhstan. We performed a retrospective analysis of…
Epidemiology of Traffic Accidents in Kazakhstan in 2013-2015
The authors have carried out a review of traffic accidents occurrence the Republic of Kazakhstan in 2013-2015. A favorable trend -indices decrease of traffic accidents from 2013 has been revealed as well as considerable differences between the regions of Kazakhstan according to the figures have been discovered. Country regions with the most unfavorable situation in traffic accidents and population mortality as a result of traffic accidents have b…
Patients’ Assessment of in-Patient Medical Care Quality in Kazakhstan
In this cross-sectional study we assessed self-perceived quality of inpatient healthcare in three Kazakhstani cities. Altogether, 923 patients admitted to the city hospitals in Almaty, Aktobe and Semey filled out an anonymous questionnaire. 63 % of them were emergency patients. Binary logistic regression and principal component analysis (PCA) were used. Adjustments for social and demographic patients' characteristics were made. Altogether, 82.9 %…
Qualitative Research in Medicine and Public Health
In this paper we present definition, classification and main characteristics of qualitative research as well as its advantages and disadvantages. We also compare the main features of qualitative and quantitative study designs. Examples are given to demonstrate practical steps in qualitative inquiry to demonstrate that qualitative research can sufficiently contribute to evidence generation in medicine and public health complementing quantitative r…
Assessment of the Role of Selected Comorbidities on Overall -and Cardiovascular Mortality in Southern Kazakhstan
The aim of the study was to assess survival of patients with isolated and combined disorders of circulatory system and diabetes mellitus in Turkestan region, Southern Kazakhstan. Altogether, 1 143 randomly selected individuals comprised a cohort, which was followed up from 2003 through 2015. Data on diagnosis, age, gender, body mass index, smoking and alcohol consumption were collected by trained medical interviewers. Bivariate comparisons of sur…
Leech Therapy in Kazakhstan
Leech therapy is one of the most commonly used methods of complementary medicine. In Kazakhstan, leech therapy is officially recognized method of rehabilitation, however, no studies describing patients of leech therapy clinics or factors associated with compliance with this treatment with original data from Kazakhstan have been published yet. The aim of this study is to present socio-demographic characteristics of patients receiving leech therapy…
Introduction to Stata - Software for Statistical Data Analysis
This is the first article of the series of publications in the Human Ecology journal on biostatistics using STATA software. Earlier series of methodological papers published in 2008 was adapted to SPSS software. However, the price for SPSS in Russia considerably increased in recent years that led to the fact that many institutions switch from SPSS to STATA. It is worth mentioning that STATA is as popular as SPSS in European universities and resea…
Analysis of Three Independent Groups Using Non-Parametric Kruskal-Wallis Test in Stata Software
In this paper, we have presented theoretical principles of analysis of three or more independent groups using the Kruskal-Wallis test. We have presented calculations using formulas as well as a step-by-step algorithm for use of this test in STATA software. Moreover, we have given practical examples with special emphasis on assumptions of this test. We have also presented recommendations for presentation of results in scientific publications
Analysis of One and Two Independent Samples Using Stata Software
In this paper we present theoretical principles of the use of one- and two-samples Student’s t-tests. Practical examples are presented with detailed explanations of the use of formulas as well as with step-by-step algorithm on how to use STATA software for comparisons of means in one- and two independent samples with subsequent interpretation of the outputs
Assessment of Use of Statistical Methods in Scientific Articles of the Kazakhstan’s Medical Journals
Medical journals of Kazakhstan intergrate to the international space, however today none of them has Science Citation Index and doesn't enter into the Web of knowledge database, according to this, articles published in Kazakhstan’s journals can't come to the international level. The said problem determines the necessity of an analysis and the identification of the key problems, which “prevents” from spreading the research results achieved by the …
Cultural Participation and Health
OBJECTIVE: Population studies demonstrate that attending cultural events is conducive to improved health when baseline health, income, education, and health habits are taken into account. Animal experiments suggest possible mechanisms. We studied the link in humans between attending cultural events and health in a randomized controlled trial. METHODS: Members of the local government officers' union in the health services in Umeå, Sweden, were inv…
Attending cultural events and cancer mortality
Attendance at cultural events is associated with better survival and self-rated health. This study aimed to determine whether attendance at cinemas, theater, art galleries, live music shows, and museums was associated with cancer-related mortality. A randomly selected, cancer-free cohort of Swedish adults aged 25–74 years (n = 9011), formed in 1990–91, was followed up to 31 December 2003. The outcome measure was cancer-related mortality. The main…
Analysis of Understanding of International Questionnaires by Russian People During Population Surveys of Socially Important Diseases
The study was provided in Arkhangelsk to describe citizens perception and understanding of questions of questionnaires used for evaluation of preventive actions against HIV. We used qualitative approach with focus group discussion like the data gathering method and content analysis for data analysis. 27 informants aged 18-33 took part in the study. The focus group discussion allowed to detect understanding of meaning of the questions as well as v…
Assessment of Use of Statistical Methods in Scientific Articles of the Kazakhstan’s Medical Journals
Medical journals of Kazakhstan intergrate to the international space, however today none of them has Science Citation Index and doesn't enter into the Web of knowledge database, according to this, articles published in Kazakhstan’s journals can't come to the international level. The said problem determines the necessity of an analysis and the identification of the key problems, which “prevents” from spreading the research results achieved by the …
One-Way Analysis of Variance (Anova) in Stata Software
In the article, we have presented theoretical principles of one-way analysis of variance (ANOVA) for comparisons of three or more independent groups. Examples of the use of ANOVA with manual calculations using formulas have been given as well as algorithms of the use of ANOVA in STATA software. Special consideration has been given to the assumptions which have to be tested as well as the ways to present the results in research papers
Coverage of Preferential Population Groups for Antihypertensive Medicines in Almaty, Kazakhstan
The aim of this descriptive study was to assess the coverage of preferential population groups for antihypertensive medicines in Almaty, the former capital of Kazakhstan. We present the data on the coverage of preferential population groups for the period from 2008 through 2012. The absolute number of residents who were covered for antihypertensive medicines increased from 31814 to 73518. Financial resources allocated by the state to cover the pr…
Analysis of Variance for Repeated Measurements Using Stata
In this paper we present basic principles of analysis of quantitative data in three or more paired samples. Examples of normality testing, both manual calculations of repeated measurements analysis of variance (RM-ANOVA) and calculations using STATA software are described. We also discuss assumptions for using RM-ANOVA as well as the main principles of presentation of the results in scientific publications. The article gives only basic informatio…
Introduction to Stata - Software for Statistical Data Analysis
This is the first article of the series of publications in the Human Ecology journal on biostatistics using STATA software. Earlier series of methodological papers published in 2008 was adapted to SPSS software. However, the price for SPSS in Russia considerably increased in recent years that led to the fact that many institutions switch from SPSS to STATA. It is worth mentioning that STATA is as popular as SPSS in European universities and resea…
Analysis of Two Independent Samples Using Stata Software
In this paper we present theoretical principles of the use of non-parametric criteria for comparing two independent groups. Practical examples are presented with detailed explanations of the use of formulas as well as step-by-step algorithm on how to use STATA software for Mann-Whitney and two-sample Wilcoxon tests with subsequent interpretation of the outputs
Comparison of Quantitative Data in Two Paired Samples Using Stata Software
In this paper we have presented basic principles of analysis of quantitative data in two paired samples. Examples of normality testing, calculating paired t-test both manually and using the STATA software have been given. We have also considered assumptions for using paired t-test as well as the main principles of presentation of the results in scientific publications. The article has given only basic information on the use of t-test in research …
Non-Parametric Tests for Two Paired Samples Using Stata
In this paper we describe the use of non-parametric tests for comparisons of two paired samples. The authors present examples of manual calculation of Wilcoxon’s signed rank test and sign test as well as the use of STATA for calculation of the abovementioned statistical tests. We present assumptions for use of non-parametric tests for paired samples and recommendations on how to present the results in scientific publications
Incidence of and Mortality From Cervical Cancer in the Territory Adjacent to the Former Semipalatinsk Nuclear Test Site in 2008-2012
Cancer cervix is the second most common cancer among women. Association between radiation and cancerogenesis is well-established. Semey (former Semipalatinsk) is a town adjacent to the Soviet Nuclear Test Site in Kazakstan. However, little is known about epidemiology of cancer in this region. The aim of our study was to study the incidence of and mortality from cervical cancer in Semey, Kazakhsan in 2008-2012. Data on all cases of cervical cancer…
Analysis of Three Independent Groups Using Non-Parametric Kruskal-Wallis Test in Stata Software
In this paper, we have presented theoretical principles of analysis of three or more independent groups using the Kruskal-Wallis test. We have presented calculations using formulas as well as a step-by-step algorithm for use of this test in STATA software. Moreover, we have given practical examples with special emphasis on assumptions of this test. We have also presented recommendations for presentation of results in scientific publications
Maternal Occupation and Marital Status Are Associated With Birth Weight and Risk of Preterm Birth in Monchegorsk (Murmansk Region) During a 30-Year Period
We have studied social variations in the average birth weight and prevalence of preterm birth over a 30 year period based on data from the Kola Birth Registry (KBR) in Monchegorsk, we also have investigated associations between birth weight and preterm delivery and maternal occupation. Data on 24,602 infants born live from singleton pregnancies with birth weight above 1,000 grams and their mothers were abstracted inform the KBR. Associations betw…
Analysis of One and Two Independent Samples Using Stata Software
In this paper we present theoretical principles of the use of one- and two-samples Student’s t-tests. Practical examples are presented with detailed explanations of the use of formulas as well as with step-by-step algorithm on how to use STATA software for comparisons of means in one- and two independent samples with subsequent interpretation of the outputs
Descriptive Statistics and Normality Testing for Quantitative Data
In this article we explain types of data, main principles of testing for normality and descriptive statistics for quantitative data using Stata software. Using real examples, we present step-by-step analysis of data and presentation of descriptive statistics. This article continues a series of publications on basic biostatistics initiated in the previous issue of the journal. This series of papers can be used as a manual for analyzing the data fr…
Correlation Analysis Using Stata
International School of Public Health, Northern State Medical University Arkhangelsk, Russia *Department of International Public Health, Norwegian Institute of Public Health, Oslo, Norway In this paper we present general principles of correlation analysis and its use in biomedical research. Practical examples of correlation analysis are given. Calculations of Pearson’s and Spearmen’s correlation coefficients are presented using formulas and STATA…
Prediction of Outcomes After Stroke
In the contemporary world one of the leading causes of death and disability of the population belongs to the stroke. The average frequency of death within the first 30 days after stroke varies from 17 % to 34 %. During the first year about 50 % of patients die. Only 20 % of stroke survivors recover completely, while 80 % of these patients are permanently disabled. Along with the issues of stroke's prevention, treatment and its rehabilitation, it …
Assessment of the Pneumococcal Vaccination Programme in Mangistau Region, Kazakhstan
Pneumonia is one of the main contributors to infant mortality in Kazakhstan. In 2010, Kazakhstan became the first former Soviet republic introduced pneumococcal vaccine into the national immunization scheme. Mangistau region was one of the two first regions where the vaccination became routine from 1 December 2010 using a WHO certified PCV-13 vaccine. The aims of this study were: 1) to assess the number of hospitalizations of children aged 0-5 ye…
Prevalence of Anemia, Its Socio-Demographic Determinants and Potential Association With Metabolic Syndrome in Residents of Turkestan, Southern Kazakhstan
We have studied the prevalence and socio-demographic determinants of anemia and also have investigated associations between anemia and metabolic syndrome in Turkestan, Southern Kazakhstan region, Kazakhstan. Southern Kazakhstan is one of the regions with the lowest level of incomes. The sample consisted of 839 patients from the polyclinic of the International Kazakh-Turkish University. The overall prevalence of anemia was 26.4 %. The highest prev…
Psychoemotional Stress and Eating Behavior in Kazakhstan
The aim of this study was to assess the level of psychoemotional stress and its association with eating behavior in the town of Turkestan, Southern Kazakhstan. Turkestan region is considered as one of the most unfavourable regions in Kazakhstan with poor ecologic conditions. Altogether, 637 individuals from the population served by the policlinic of the International Kazakh-Turkish University participated in a cross-sectional study. The level of …
Leech Therapy in Treatment of Cardiovascular Diseases
The aim of this review was to summarize the evidence on the effectiveness of Leech therapy in treatment of cardiovascuLar diseases. This assessment is based on the analysis of results of clinical trials conducted in 2000-2015 and published in peer-reviewed literature indexed in PubMed, ISI Web of Science, Scopus, E-library.ru and E-library.kz databases. The paper presents a review of the current controlled and uncontrolled studies ensured evidenc…
Prevalence of Iodine Deficiency Among Women of Reproductive Age and Children Aged 6-59 Months in Three Counties of Kazakhstan
Iodine is one of the most important and most studied, among the many essential trace elements, the lack of which has a negative impact on human health. Kazakhstan has more than ten years' experience of universal salt iodization. In this context, the aim of this work was to evaluate the effectiveness of interventions for the prevention of iodine deficiency in sentinel populations in Akmola, East Kazakhstan (EKO) and South Kazakhstan oblasts (SKO).…
Lipid Profile Among the Population Exposed to Radiation From Semipalatinsk Nuclear Test Site, Kazakhstan
Many studies have explored associations between radiation exposure and cancer among atomic bomb survivors in Japan, Chernobyl rescue workers, workers of nuclear industry in Germany and in a historical cohort of people who were exposed to the radiation from the Semipalatinsk nuclear weapons test site in Kazakhstan. Non-cancer consequences of radiation exposure have been less studied. We identified a few publications on associations between radiati…
Ischemia-Reperfusion Syndrome and Results of Open and Endovascular Repair of Infrarenal Abdominal Aortic Aneurysm
In the period from March 2013 to May 2014, in order to study the syndrome of ischemia-reperfusion and immediate treatment results, a prospective non-randomized clinical study of 43 patients with infrarenal abdominal aortic aneurysm (AAA) was realized. The patients, depending on the method of treatment, divided into 2 groups: 26 patients with open repair (OR) and 17 patients with endovascular repair (EVAR). The main criteria for inclusion into the…
Medicine (57 works) · Environmental health (28 works) · Internal Medicine (28 works) · Computer Science (26 works) · Demography (25 works) · Mathematics (25 works) · Population (24 works) · Statistics (23 works) · Data science (15 works) · Data mining (14 works)