Olga A Kharkova
Biographic Data
| ID | 3813910 |
|---|---|
| NAME | Olga A Kharkova |
| GIVEN NAMES | Olga A |
| FAMILY NAME | Kharkova |
| SIGNATURE | KHARKOVA O A |
| AFFILIATIONS | Northern State Medical University |
| ORCID | 0000-0002-3130-2920 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 38 |
| AUTHOR COUNT | 22 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 3 |
Effect of maternal smoking on placental weight and placental-to-birth weight ratio in full-term singleton births
BACKGROUND: Maternal smoking during pregnancy is a significant risk factor for adverse pregnancy outcomes. However, studies investigating the association between smoking and placental morphology are limited.AIM: The study aimed to examine the association between maternal smoking during pregnancy and placental weight, as well as the placental-to-birth weight ratio.METHODS: A retrospective cohort study was conducted using the data from the Murmansk…
Awareness of postpartum depression among midwives and pregnant women in Arkhangelsk, Arctic Russia
BACKGROUND: Postpartum depression (PPD) affects approximately 17% of the women worldwide with nearly half of all cases going undetected. More research on maternal mental health, particularly among healthcare professionals and pregnant mothers, could help identify PPD risks and reduce its prevalence. OBJECTIVE: Given that awareness of PPD is a crucial preventive factor, we studied PPD awareness among midwives and pregnant women in Arkhangelsk, Arc…
Caregiving of Older Persons during the Covid-19 Pandemic in the Russian Arctic Province
Older people and their families were particularly affected during the COVID-19 pandemic in 2020, but not much is known about the context of the Arctic regions of Russia. In this study, we identified the changes in family care before and during the pandemic using a questionnaire for the informal caregivers of older people. We investigated how and to what extent the pandemic has affected the relationships between caregiver and older person, and how…
Associations Between Periodontal Microbiota and Metabolic Markers Among the Nenets in Arctic Russia
Introduction: Classical risk factors do not fully explain the development of cardiovascular diseases, diabetes mellitus and metabolic syndrome. Recent studies have reported associations between periodontal diseases and metabolic disturbances, although the data from Russia is scarce. Aim: To study associations between the periodontal microbiota and the main markers of metabolism among the Nenets permanently living on the Vaygach island, Arctic Rus…
Design and Implementation of the Master's Program «psychology of Health» in the Medical University
The aim of the study was the methodological substantiation and systematization of the areas of training for graduates in the Master's program "Psychology of Health" on the basis of a medical university. The experience of designing and implementing a master's program within the framework of the paradigm of mental ecology is presented. During the implementation of the program, a number of issues were solved with the study of its relevance, the iden…
Assessment of the Efficiency of Proactive Behavior Training and Individual Psychotherapy Among Persons With Different Degrees of Professional Burnout
The aim of the study is to assess the effectiveness of proactive behavior training and individual psychotherapy among groups with low/medium and high/extremely high level of professional burnout (PB). Methods. The sample consisted of 146 individuals (100 women and 46 men) who underwent proactive behavior training in Saint Petersburg, Tver, Moscow and Vladivostok. Group I included 73 persons with low or medium PB, 20 of them had an additional cour…
Effect of Smoking Behavior before and during Pregnancy on Selected Birth Outcomes among Singleton Full-Term Pregnancy
The aim of our study was to assess associations between smoking behavior before and during pregnancy and selected adverse birth outcomes. This study is based on the Murmansk County Birth Registry (MCBR). Our study includes women who delivered a singleton pregnancy after 37 weeks of gestation (N = 44,486). Smoking information was self-reported and assessed at the first antenatal visit during pregnancy. We adjusted for potential confounders using l…
Do Cervical Cancer Patients Diagnosed with Opportunistic Screening Live Longer? An Arkhangelsk Cancer Registry Study
The aim of the current study was to compare cervical cancer (СС) patients diagnosed with and without screening in terms of: (i) sociodemographic and clinical characteristics; (ii) factors associated with survival; and (iii), and levels of risk. A registry-based study was conducted using data from the Arkhangelsk Cancer Registry. It included women with newly diagnosed malignant neoplasm of the uterine cervix during the period of 1 January 2005 to …
Predictive Model of Tobacco Smoking Continuation During Pregnancy
Tobacco smoking during pregnancy affects how the course of pregnancy and fetal development and subsequent child. The aim of this work was to create a model of survival probability prediction of smoking during pregnancy, aimed at finding appropriate approaches in the development of individual psycho-correctional program. Methods. In a cross-sectional study women living permanently in Arkhangelsk and the Arkhangelsk Region, in the III trimester of …
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,…
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…
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…
Predicting the Emergence of Preclinical Mental Disorders to Combatants
Nozologically formed borderline mental disorder (BMD) in combatants have a lower prevalence of mental disorders unlike a painful level. Blurred diagnostic criteria do not allow to attribute to the category of BMD the short-term outage of disturbance of mental adaptation - transient affective and behavioral reactions (TABR). In order to develop the expectancy model of TABR formation an analysis of personality characteristics of 649 combatants of t…
Hemodynamics State in «mother-Placenta-Fetus» System of Pregnant Smokers
Smoking is one of the risk factors in the disturbance development in the "mother-placenta-fetus" system which serves as one of the major preventable factors of pregnancy unsuccessful outcome for both mother and fetus. In order to identify characteristics of hemodynamic status of "mother-placenta-fetus" system in smoking pregnant women the analysis of physiological indicators of Doppler ultrasound had been done by means of the of uteroplacental, f…
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
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…
Heavy Metals Content in Newborns’ Meconium of Smoking Mothers
The aim of this study was to measure levels of toxic metals (lead, cadmium, nickel, chromium) in newborns' meconium samples of smoking mothers of the Arkhangelsk region. Heavy metal content was determined in the meconium with use of the inductive coupled plasma emission spectrometry and atomic absorption spectroscopy with the graphite furnace atomization technique. The prospective cohort study was conducted among 30 newborns of smoking women and …
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
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
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
Etiology and Clinical Manifestations of Intestine Intussusception in Children of Arkhangelsk Region
A study of manifestations of etiological, age and morbidity aspects of intussusception has been carried out in Arkhangelsk and the Arkhangelsk region in different periods of time of observation and development of the disease’s model in the region. A retrospective analysis of 270 cases of IS in 264 children treated in the Arkhangelsk Children's Hospital from 1980 to 2011 has shown that age and etiological aspects and clinical manifestations of the…
P2-408 Prevalence of and attitudes towards smoking among midwifes in northwest Russia
Introduction Smoking is the leading cause of premature mortality and Russia is among the countries with the highest prevalence of smoking. Pregnancy is considered as a good time-point for smoking cessation and midwifes can play an important role in this process. However, it is generally unknown how prevalent is smoking among midwifes in Russia. The aim is to assess the prevalence of and attitudes towards smoking among midwifes in Northwest Russia…
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
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…
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…
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,…
Predicting the Emergence of Preclinical Mental Disorders to Combatants
Nozologically formed borderline mental disorder (BMD) in combatants have a lower prevalence of mental disorders unlike a painful level. Blurred diagnostic criteria do not allow to attribute to the category of BMD the short-term outage of disturbance of mental adaptation - transient affective and behavioral reactions (TABR). In order to develop the expectancy model of TABR formation an analysis of personality characteristics of 649 combatants of t…
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…
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
P2-408 Prevalence of and attitudes towards smoking among midwifes in northwest Russia
Introduction Smoking is the leading cause of premature mortality and Russia is among the countries with the highest prevalence of smoking. Pregnancy is considered as a good time-point for smoking cessation and midwifes can play an important role in this process. However, it is generally unknown how prevalent is smoking among midwifes in Russia. The aim is to assess the prevalence of and attitudes towards smoking among midwifes in Northwest Russia…
Etiology and Clinical Manifestations of Intestine Intussusception in Children of Arkhangelsk Region
A study of manifestations of etiological, age and morbidity aspects of intussusception has been carried out in Arkhangelsk and the Arkhangelsk region in different periods of time of observation and development of the disease’s model in the region. A retrospective analysis of 270 cases of IS in 264 children treated in the Arkhangelsk Children's Hospital from 1980 to 2011 has shown that age and etiological aspects and clinical manifestations of the…
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
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
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
Heavy Metals Content in Newborns’ Meconium of Smoking Mothers
The aim of this study was to measure levels of toxic metals (lead, cadmium, nickel, chromium) in newborns' meconium samples of smoking mothers of the Arkhangelsk region. Heavy metal content was determined in the meconium with use of the inductive coupled plasma emission spectrometry and atomic absorption spectroscopy with the graphite furnace atomization technique. The prospective cohort study was conducted among 30 newborns of smoking women and …
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,…
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…
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…
Predicting the Emergence of Preclinical Mental Disorders to Combatants
Nozologically formed borderline mental disorder (BMD) in combatants have a lower prevalence of mental disorders unlike a painful level. Blurred diagnostic criteria do not allow to attribute to the category of BMD the short-term outage of disturbance of mental adaptation - transient affective and behavioral reactions (TABR). In order to develop the expectancy model of TABR formation an analysis of personality characteristics of 649 combatants of t…
Hemodynamics State in «mother-Placenta-Fetus» System of Pregnant Smokers
Smoking is one of the risk factors in the disturbance development in the "mother-placenta-fetus" system which serves as one of the major preventable factors of pregnancy unsuccessful outcome for both mother and fetus. In order to identify characteristics of hemodynamic status of "mother-placenta-fetus" system in smoking pregnant women the analysis of physiological indicators of Doppler ultrasound had been done by means of the of uteroplacental, f…
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
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…
Effect of Smoking Behavior before and during Pregnancy on Selected Birth Outcomes among Singleton Full-Term Pregnancy
The aim of our study was to assess associations between smoking behavior before and during pregnancy and selected adverse birth outcomes. This study is based on the Murmansk County Birth Registry (MCBR). Our study includes women who delivered a singleton pregnancy after 37 weeks of gestation (N = 44,486). Smoking information was self-reported and assessed at the first antenatal visit during pregnancy. We adjusted for potential confounders using l…
Do Cervical Cancer Patients Diagnosed with Opportunistic Screening Live Longer? An Arkhangelsk Cancer Registry Study
The aim of the current study was to compare cervical cancer (СС) patients diagnosed with and without screening in terms of: (i) sociodemographic and clinical characteristics; (ii) factors associated with survival; and (iii), and levels of risk. A registry-based study was conducted using data from the Arkhangelsk Cancer Registry. It included women with newly diagnosed malignant neoplasm of the uterine cervix during the period of 1 January 2005 to …
Predictive Model of Tobacco Smoking Continuation During Pregnancy
Tobacco smoking during pregnancy affects how the course of pregnancy and fetal development and subsequent child. The aim of this work was to create a model of survival probability prediction of smoking during pregnancy, aimed at finding appropriate approaches in the development of individual psycho-correctional program. Methods. In a cross-sectional study women living permanently in Arkhangelsk and the Arkhangelsk Region, in the III trimester of …
Assessment of the Efficiency of Proactive Behavior Training and Individual Psychotherapy Among Persons With Different Degrees of Professional Burnout
The aim of the study is to assess the effectiveness of proactive behavior training and individual psychotherapy among groups with low/medium and high/extremely high level of professional burnout (PB). Methods. The sample consisted of 146 individuals (100 women and 46 men) who underwent proactive behavior training in Saint Petersburg, Tver, Moscow and Vladivostok. Group I included 73 persons with low or medium PB, 20 of them had an additional cour…
Design and Implementation of the Master's Program «psychology of Health» in the Medical University
The aim of the study was the methodological substantiation and systematization of the areas of training for graduates in the Master's program "Psychology of Health" on the basis of a medical university. The experience of designing and implementing a master's program within the framework of the paradigm of mental ecology is presented. During the implementation of the program, a number of issues were solved with the study of its relevance, the iden…
Associations Between Periodontal Microbiota and Metabolic Markers Among the Nenets in Arctic Russia
Introduction: Classical risk factors do not fully explain the development of cardiovascular diseases, diabetes mellitus and metabolic syndrome. Recent studies have reported associations between periodontal diseases and metabolic disturbances, although the data from Russia is scarce. Aim: To study associations between the periodontal microbiota and the main markers of metabolism among the Nenets permanently living on the Vaygach island, Arctic Rus…
Caregiving of Older Persons during the Covid-19 Pandemic in the Russian Arctic Province
Older people and their families were particularly affected during the COVID-19 pandemic in 2020, but not much is known about the context of the Arctic regions of Russia. In this study, we identified the changes in family care before and during the pandemic using a questionnaire for the informal caregivers of older people. We investigated how and to what extent the pandemic has affected the relationships between caregiver and older person, and how…
Awareness of postpartum depression among midwives and pregnant women in Arkhangelsk, Arctic Russia
BACKGROUND: Postpartum depression (PPD) affects approximately 17% of the women worldwide with nearly half of all cases going undetected. More research on maternal mental health, particularly among healthcare professionals and pregnant mothers, could help identify PPD risks and reduce its prevalence. OBJECTIVE: Given that awareness of PPD is a crucial preventive factor, we studied PPD awareness among midwives and pregnant women in Arkhangelsk, Arc…
Effect of maternal smoking on placental weight and placental-to-birth weight ratio in full-term singleton births
BACKGROUND: Maternal smoking during pregnancy is a significant risk factor for adverse pregnancy outcomes. However, studies investigating the association between smoking and placental morphology are limited.AIM: The study aimed to examine the association between maternal smoking during pregnancy and placental weight, as well as the placental-to-birth weight ratio.METHODS: A retrospective cohort study was conducted using the data from the Murmansk…
Medicine (16 works) · Computer Science (9 works) · Mathematics (7 works) · Pregnancy (7 works) · Internal Medicine (6 works) · Obstetrics (6 works) · Statistics (6 works) · Psychology (5 works) · Data science (4 works) · Engineering (4 works)