William G LeBlanc
Biographic Data
| ID | 5466007 |
|---|---|
| NAME | William G LeBlanc |
| GIVEN NAMES | William G |
| FAMILY NAME | LeBlanc |
| SIGNATURE | LEBLANC W G |
| AFFILIATIONS | University of Miami |
| ORCID | 0000-0003-4286-2306 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 24 |
| WORKS AS AUTHOR | 22 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1988 |
| LATEST PUBLICATION YEAR | 2012 |
| H-INDEX | 3 |
Socioeconomic Status and Adolescent Mental Disorders
Objectives. Although previous research has shown that low socioeconomic status (SES) is associated with mental illness, it is unclear which aspects of SES are most important. We investigated this issue by examining associations between 5 aspects of SES and adolescent mental disorders. Methods. Data came from a national survey of US adolescents (n = 6483). Associations among absolute SES (parental income and education), relative SES (relative depr…
Arthritis, Occupational Class, and the Aging US Workforce
Objectives. The working poor sometimes delay retirement to survive. However, their higher risk of disease and disability threatens both their financial survival and their ability to work through the retirement years. We used the burden of disease attributable to arthritis by occupational class to illustrate the challenges faced by the older poor. Methods. We merged data from the National Health Interview Survey, Medical Expenditure Panel Survey, …
Arthritis, Occupational Class, and the Aging US Workforce
Objectives. The working poor sometimes delay retirement to survive. However, their higher risk of disease and disability threatens both their financial survival and their ability to work through the retirement years. We used the burden of disease attributable to arthritis by occupational class to illustrate the challenges faced by the older poor. Methods. We merged data from the National Health Interview Survey, Medical Expenditure Panel Survey, …
Secondhand Smoke Exposure and Depressive Symptoms
OBJECTIVE: To evaluate the association between secondhand smoke (SHS) exposure and depression. Tobacco smoking and depression are strongly associated, but the possible effects of SHS have not been evaluated. METHODS: The 2005 to 2006 National Health and Nutrition Examination Survey (NHANES) is a cross-sectional sample of the noninstitutionalized civilian U.S. population. SHS exposure was measured in adults aged > or =20 years by serum cotinine an…
Sensory Impairment Among Older US Workers
We used 1997–2004 National Health Interview Survey data to evaluate the prevalence of sensory impairment among US workers 65 years and older. Hearing impairment prevalence was 3 times that of visual impairment (33.4% vs 10.2%), and 38% of older workers reported experiencing either impairment. Farm operators, mechanics, and motor vehicle operators had the highest prevalence of sensory impairment. Workplace screening and accommodations, including s…
Cancer Screening in US Workers
Regular cancer screening can prevent the development of some cancers and increase patient survival for other cancers. We evaluated the reported cancer screening prevalence among a nationally representative sample of all US workers with data from the 2000 and 2005 Cancer Screening Supplements of the National Health Interview Survey. Overall, workers with the lowest rates of health insurance coverage (in particular, Hispanic workers, agricultural w…
Healthcare provider smoking cessation advice among US worker groups
The relatively low reported prevalence of HCP initiated smoking cessation discussion, particularly among currently employed workers with potentially synergistic occupational exposures and high current smoking prevalence, needs to be addressed through educational campaigns targeting physicians and other HCPs
Sympathoimmune Anomalies Underlying the Response to Stressful Challenge in Human Immunodeficiency Virus Spectrum Disease
Objective: This study examined immune, endocrine, and cardiovascular reactivity during stressful behavioral challenge in human immunodeficiency virus (HIV) seropositive (HIV+) and seronegative (HIV−) men and women and assessed whether immunocellular reactivity was differentially associated with concomitant alterations in sympathetic response. Methods: The 133 HIV+ [84 asymptomatic, 49 symptomatic] and 92 HIV− subjects completed a speech stress re…
Obesity in US Workers
Objectives. Obesity has emerged as one of the most important public health issues in the United States. We assessed obesity prevalence rates and their trends among major US occupational groups. Methods. Self-reported weight and height were collected annually on US workers, aged 18 years or older, from the 1986 to 1995 and the 1997 to 2002 National Health Interview Surveys. Overall, occupation-, race-, and gender-specific rates of obesity (defined…
Risk of Hospitalization Among Firefighters
This study assessed the risk of hospitalization among firefighters. Data were derived from a nationally representative sample of 235 897 employed men from the National Health Interview Survey. Firefighters aged 30 to 39 years were at significantly increased risk for hospitalization relative to other employed men in the same age group (odds ratio = 1.93; 95% confidence interval=1.21, 3.09). Findings from this study and others support the call for …
Psychological Distress is Associated With Decreased Memory Helper T-cell and B-cell Counts in Pre-Aids HIV Seropositive Men and Women but Only in Those With Low Viral Load
OBJECTIVE: Although some studies have demonstrated the association of psychological distress and diminished immune system function in HIV spectrum disease, other studies have yielded apparently conflicting findings; the lack of consideration of the role of HIV viral burden may be central to this controversy. This study examined whether HIV viral burden moderated the relationship between psychological distress and enumerative and functional immune…
Low-Flow Circulatory State Distinguishes Abnormal Immunocellular Response to Stress in Hiv Spectrum Disease
Hurwitz, B. E.; Brownley, K.A.; Fletcher, M.A.; Klimas, N.; Motivala, S.J.; Milanovich, J.R.; LeBlanc, W.G.; Schneiderman, N. Author Information
Computing Many-One Comparisons among Sample Variances with the SAS System
The SAS System was used to program a statistical procedure developed by Levy (1975a). The focus was on Dunnett-like pairwise multiple comparisons among sample variances. An example using data from Glass and Hopkins (1996) was used to illustrate the final analysis of a computer run conducted with this program
A SAS Algorithm for Computing Scheffe-Marascuilo Comparisons among Correlations
The SAS System was used to program an algorithm for constructing both simple and complex multiple comparisons among product-moment correlation coefficients. The statistical procedure is attributable to Marascuilo (1966) and is based on Scheff6's method (1959). This SAS program is applicable to designs with either equal or unequal sample sizes in the cells
Scheffe-Marascuilo Comparisons among Independent Binomial Samples
A large-sample technique attributable to Leonard Marascuilo, which is based on Henry Scheffe's well-known multiple comparison procedure, was programmed with the SAS System. The focus was on comparisons among independent binomial samples. As in Scheffe's "data snooping" analytic method, the comparisons can be planned or post hoc, they can be simple or complex, and they need not be orthogonal, but none of them will be statistically significant unle…
An SAS Program for Pairwise Comparisons among Variances
Levy devised a large-sample statistical technique that makes it possible to apply Tukey's method of multiple comparisons to statistics other than the sample mean. In the present article, an SAS program is described for constructing pairwise comparisons among the variances of k independent samples, which is based on Levy's procedure. The method is illustrated with an example from marine biology. This computer program can accommodate equal or unequ…
Pairwise Comparisons among Proportions
The SAS System was used to program an algorithm designed to construct pairwise multiple comparisons among proportions. The statistical method is attributable to Levy and is based on a procedure described by Spjøtvoll and Stoline, which is an extension of Tukey's T-method. This SAS program can accommodate applications involving unequal sample sizes for a set of k independent sample proportions
Computing Pairwise Comparisons among Correlations with the SAS System
A SAS program was written to compute pairwise multiple comparisons among a set of k independent product-moment correlation coefficients. The program can accommodate both equal and unequal sample sizes for up to k = 10 samples. Although the theoretical basis of the statistical technique is attributable to Tukey, the applicability of the method to correlation coefficients was made possible through a large-sample technique described by Levy
Computing Many-One Comparisons among Independent Sample Proportions with the SAS System
Levy extended Dunnett's procedure for multiple comparisons to include contrasts defined on proportions, variances, and product-moment correlations. In the present article, an SAS program that uses Levy's method for conducting many-one pairwise comparisons among proportions associated with k independent samples is described. An example from Introduction to Design and Analysis by Keppel, Saufley, and Togunaga was used to illustrate the final analys…
Many-One Comparisons among Correlations
A large-sample statistical technique attributable to Levy and based on Dunnett's well-known multiple-comparison method was programmed with the SAS system. The focus was on many-one comparisons among k independent sample product-moment correlation coefficients. An application using the numerical example in Levy's paper was introduced to illustrate the final analysis of a computer run conducted with this SAS program
Creating Item Characteristic Curves from Logist and Bical Output
Several SAS Graph programs are presented for convenient graphical presentation of item and test characteristic curves and related functions from one, two, or three parameter IRT models. Inspection of these graphs can greatly facilitate understanding and use of tabular output of such commercial programs as LOGIST and BICAL
A Test-Scoring/Item Analysis SAS Program for the IBM Mainframe
This paper presents an item analysis program written in SAS that can be implemented in a central computing facility to provide test scoring support in an academic environment
Socioeconomic Status and Adolescent Mental Disorders
Objectives. Although previous research has shown that low socioeconomic status (SES) is associated with mental illness, it is unclear which aspects of SES are most important. We investigated this issue by examining associations between 5 aspects of SES and adolescent mental disorders. Methods. Data came from a national survey of US adolescents (n = 6483). Associations among absolute SES (parental income and education), relative SES (relative depr…
Obesity in US Workers
Objectives. Obesity has emerged as one of the most important public health issues in the United States. We assessed obesity prevalence rates and their trends among major US occupational groups. Methods. Self-reported weight and height were collected annually on US workers, aged 18 years or older, from the 1986 to 1995 and the 1997 to 2002 National Health Interview Surveys. Overall, occupation-, race-, and gender-specific rates of obesity (defined…
Arthritis, Occupational Class, and the Aging US Workforce
Objectives. The working poor sometimes delay retirement to survive. However, their higher risk of disease and disability threatens both their financial survival and their ability to work through the retirement years. We used the burden of disease attributable to arthritis by occupational class to illustrate the challenges faced by the older poor. Methods. We merged data from the National Health Interview Survey, Medical Expenditure Panel Survey, …
Cancer Screening in US Workers
Regular cancer screening can prevent the development of some cancers and increase patient survival for other cancers. We evaluated the reported cancer screening prevalence among a nationally representative sample of all US workers with data from the 2000 and 2005 Cancer Screening Supplements of the National Health Interview Survey. Overall, workers with the lowest rates of health insurance coverage (in particular, Hispanic workers, agricultural w…
A Test-Scoring/Item Analysis SAS Program for the IBM Mainframe
This paper presents an item analysis program written in SAS that can be implemented in a central computing facility to provide test scoring support in an academic environment
Creating Item Characteristic Curves from Logist and Bical Output
Several SAS Graph programs are presented for convenient graphical presentation of item and test characteristic curves and related functions from one, two, or three parameter IRT models. Inspection of these graphs can greatly facilitate understanding and use of tabular output of such commercial programs as LOGIST and BICAL
An SAS Program for Pairwise Comparisons among Variances
Levy devised a large-sample statistical technique that makes it possible to apply Tukey's method of multiple comparisons to statistics other than the sample mean. In the present article, an SAS program is described for constructing pairwise comparisons among the variances of k independent samples, which is based on Levy's procedure. The method is illustrated with an example from marine biology. This computer program can accommodate equal or unequ…
Pairwise Comparisons among Proportions
The SAS System was used to program an algorithm designed to construct pairwise multiple comparisons among proportions. The statistical method is attributable to Levy and is based on a procedure described by Spjøtvoll and Stoline, which is an extension of Tukey's T-method. This SAS program can accommodate applications involving unequal sample sizes for a set of k independent sample proportions
Computing Pairwise Comparisons among Correlations with the SAS System
A SAS program was written to compute pairwise multiple comparisons among a set of k independent product-moment correlation coefficients. The program can accommodate both equal and unequal sample sizes for up to k = 10 samples. Although the theoretical basis of the statistical technique is attributable to Tukey, the applicability of the method to correlation coefficients was made possible through a large-sample technique described by Levy
Computing Many-One Comparisons among Independent Sample Proportions with the SAS System
Levy extended Dunnett's procedure for multiple comparisons to include contrasts defined on proportions, variances, and product-moment correlations. In the present article, an SAS program that uses Levy's method for conducting many-one pairwise comparisons among proportions associated with k independent samples is described. An example from Introduction to Design and Analysis by Keppel, Saufley, and Togunaga was used to illustrate the final analys…
Many-One Comparisons among Correlations
A large-sample statistical technique attributable to Levy and based on Dunnett's well-known multiple-comparison method was programmed with the SAS system. The focus was on many-one comparisons among k independent sample product-moment correlation coefficients. An application using the numerical example in Levy's paper was introduced to illustrate the final analysis of a computer run conducted with this SAS program
Computing Many-One Comparisons among Sample Variances with the SAS System
The SAS System was used to program a statistical procedure developed by Levy (1975a). The focus was on Dunnett-like pairwise multiple comparisons among sample variances. An example using data from Glass and Hopkins (1996) was used to illustrate the final analysis of a computer run conducted with this program
A SAS Algorithm for Computing Scheffe-Marascuilo Comparisons among Correlations
The SAS System was used to program an algorithm for constructing both simple and complex multiple comparisons among product-moment correlation coefficients. The statistical procedure is attributable to Marascuilo (1966) and is based on Scheff6's method (1959). This SAS program is applicable to designs with either equal or unequal sample sizes in the cells
Scheffe-Marascuilo Comparisons among Independent Binomial Samples
A large-sample technique attributable to Leonard Marascuilo, which is based on Henry Scheffe's well-known multiple comparison procedure, was programmed with the SAS System. The focus was on comparisons among independent binomial samples. As in Scheffe's "data snooping" analytic method, the comparisons can be planned or post hoc, they can be simple or complex, and they need not be orthogonal, but none of them will be statistically significant unle…
Low-Flow Circulatory State Distinguishes Abnormal Immunocellular Response to Stress in Hiv Spectrum Disease
Hurwitz, B. E.; Brownley, K.A.; Fletcher, M.A.; Klimas, N.; Motivala, S.J.; Milanovich, J.R.; LeBlanc, W.G.; Schneiderman, N. Author Information
Psychological Distress is Associated With Decreased Memory Helper T-cell and B-cell Counts in Pre-Aids HIV Seropositive Men and Women but Only in Those With Low Viral Load
OBJECTIVE: Although some studies have demonstrated the association of psychological distress and diminished immune system function in HIV spectrum disease, other studies have yielded apparently conflicting findings; the lack of consideration of the role of HIV viral burden may be central to this controversy. This study examined whether HIV viral burden moderated the relationship between psychological distress and enumerative and functional immune…
Risk of Hospitalization Among Firefighters
This study assessed the risk of hospitalization among firefighters. Data were derived from a nationally representative sample of 235 897 employed men from the National Health Interview Survey. Firefighters aged 30 to 39 years were at significantly increased risk for hospitalization relative to other employed men in the same age group (odds ratio = 1.93; 95% confidence interval=1.21, 3.09). Findings from this study and others support the call for …
Sympathoimmune Anomalies Underlying the Response to Stressful Challenge in Human Immunodeficiency Virus Spectrum Disease
Objective: This study examined immune, endocrine, and cardiovascular reactivity during stressful behavioral challenge in human immunodeficiency virus (HIV) seropositive (HIV+) and seronegative (HIV−) men and women and assessed whether immunocellular reactivity was differentially associated with concomitant alterations in sympathetic response. Methods: The 133 HIV+ [84 asymptomatic, 49 symptomatic] and 92 HIV− subjects completed a speech stress re…
Obesity in US Workers
Objectives. Obesity has emerged as one of the most important public health issues in the United States. We assessed obesity prevalence rates and their trends among major US occupational groups. Methods. Self-reported weight and height were collected annually on US workers, aged 18 years or older, from the 1986 to 1995 and the 1997 to 2002 National Health Interview Surveys. Overall, occupation-, race-, and gender-specific rates of obesity (defined…
Healthcare provider smoking cessation advice among US worker groups
The relatively low reported prevalence of HCP initiated smoking cessation discussion, particularly among currently employed workers with potentially synergistic occupational exposures and high current smoking prevalence, needs to be addressed through educational campaigns targeting physicians and other HCPs
Sensory Impairment Among Older US Workers
We used 1997–2004 National Health Interview Survey data to evaluate the prevalence of sensory impairment among US workers 65 years and older. Hearing impairment prevalence was 3 times that of visual impairment (33.4% vs 10.2%), and 38% of older workers reported experiencing either impairment. Farm operators, mechanics, and motor vehicle operators had the highest prevalence of sensory impairment. Workplace screening and accommodations, including s…
Cancer Screening in US Workers
Regular cancer screening can prevent the development of some cancers and increase patient survival for other cancers. We evaluated the reported cancer screening prevalence among a nationally representative sample of all US workers with data from the 2000 and 2005 Cancer Screening Supplements of the National Health Interview Survey. Overall, workers with the lowest rates of health insurance coverage (in particular, Hispanic workers, agricultural w…
Secondhand Smoke Exposure and Depressive Symptoms
OBJECTIVE: To evaluate the association between secondhand smoke (SHS) exposure and depression. Tobacco smoking and depression are strongly associated, but the possible effects of SHS have not been evaluated. METHODS: The 2005 to 2006 National Health and Nutrition Examination Survey (NHANES) is a cross-sectional sample of the noninstitutionalized civilian U.S. population. SHS exposure was measured in adults aged > or =20 years by serum cotinine an…
Arthritis, Occupational Class, and the Aging US Workforce
Objectives. The working poor sometimes delay retirement to survive. However, their higher risk of disease and disability threatens both their financial survival and their ability to work through the retirement years. We used the burden of disease attributable to arthritis by occupational class to illustrate the challenges faced by the older poor. Methods. We merged data from the National Health Interview Survey, Medical Expenditure Panel Survey, …
Arthritis, Occupational Class, and the Aging US Workforce
Objectives. The working poor sometimes delay retirement to survive. However, their higher risk of disease and disability threatens both their financial survival and their ability to work through the retirement years. We used the burden of disease attributable to arthritis by occupational class to illustrate the challenges faced by the older poor. Methods. We merged data from the National Health Interview Survey, Medical Expenditure Panel Survey, …
Socioeconomic Status and Adolescent Mental Disorders
Objectives. Although previous research has shown that low socioeconomic status (SES) is associated with mental illness, it is unclear which aspects of SES are most important. We investigated this issue by examining associations between 5 aspects of SES and adolescent mental disorders. Methods. Data came from a national survey of US adolescents (n = 6483). Associations among absolute SES (parental income and education), relative SES (relative depr…
Medicine (13 works) · Computer Science (9 works) · Environmental health (9 works) · Mathematics (9 works) · Statistics (9 works) · Sample (material) (8 works) · Population (7 works) · Gerontology (6 works) · Internal Medicine (6 works) · Internal Medicine (6 works)