James A Hanley
Biographic Data
| ID | 1659760 |
|---|---|
| NAME | James A Hanley |
| GIVEN NAMES | James A |
| FAMILY NAME | Hanley |
| SIGNATURE | HANLEY J A |
| AFFILIATIONS | McGill University |
| ORCID | 0000-0003-3486-5291 |
| VERIFIED | Yes |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 19 |
| WORKS AS AUTHOR | 17 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1987 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 2 |
The (Im)precision of Life Expectancy Numbers
Life expectancy figures for countries and population segments are increasingly being reported to more decimal places and used as indicators of the strengths or failings of countries’ health and social systems. Reports seldom quantify their intrinsic statistical imprecision or the age-specific numbers of deaths that determine them. The SE formulas available to compute imprecision are all model based. This note adds a more intuitive data-based SE m…
Measuring the Mortality Impact of Breast Cancer Screening
Educational Disparities in Aids-affected Communities
To inform policy, our study identifies which populations of AIDS-affected children are in need of educational assistance. Using the 2004--2005 Malawi Integrated Household Survey, multilevel models examine the association between AIDS-related impacts and educational outcomes. Double and maternal orphans are more likely to be out of school and behind in grade level; living with an adult suffering from a potential AIDS-related illness is also associ…
Aids in the family and community
Risk factors for tobacco dependence in adolescent smokers
TD risk in adolescents is associated with intensity of recent cigarette consumption, while the role of more distant cigarette consumption appears small; subjects with slow nicotine metabolism and those with more depression symptoms are at increased risk of becoming tobacco dependent. The risk of being tobacco dependent is considerably higher in subjects who had previously developed the TD state
Ranking Hospitals According to Acute Myocardial Infarction Mortality
OBJECTIVE: The objective of this population-based observational cohort study was to estimate the extent to which the inclusion/exclusion of transferred patients with acute myocardial infarction (AMI) impacts on hospital performance rankings. SUBJECTS: The authors studied 91,633 adult patients admitted to 116 acute care hospitals in Quebec, Canada, with a primary diagnosis of AMI between 1992 and 1999. MAIN OUTCOME MEASURE: Hospital performance ra…
Using the Patient Generated Index to Evaluate Response Shift Post-stroke
Change in quality of life of people with stroke over time
Statistical Analysis of Correlated Data Using Generalized Estimating Equations
The method of generalized estimating equations (GEE) is often used to analyze longitudinal and other correlated response data, particularly if responses are binary. However, few descriptions of the method are accessible to epidemiologists. In this paper, the authors use small worked examples and one real data set, involving both binary and quantitative response data, to help end-users appreciate the essence of the method. The examples are simple …
Physician and Practice Characteristics Associated with the Early Utilization of New Prescription Drugs
BACKGROUND: Prescription of new drugs contributes to substantial increases in annual drug expenditures. A small proportion of physicians appear to be early users of new prescription drugs and little is known about their characteristics. OBJECTIVE: To estimate the initial utilization rate of new prescription drugs among physicians, and the physician and practice characteristics associated with early use. DESIGN: Cumulative prospective assessment o…
Factors Associated With Pattern of Care Before Surgery for Breast Cancer in Quebec Between 1992 and 1997
BACKGROUND: Practice guidelines for breast cancer emphasize the importance of establishing an accurate diagnosis using a minimum number of procedures and selecting optimal treatment regimens. Understanding the determinants of waiting time is essential to develop optimum interventions to reduce delay. OBJECTIVES: The purpose of this study is to estimate the extent to which variability in 1) the number of procedures before surgery and 2) waiting ti…
A heuristic approach to the formulas for population attributable fraction
BACKGROUND: As the definitional formula for population attributable fraction is not usually directly usable in applications, separate estimation formulas are required. However, most epidemiology textbooks limit their coverage to Levin's formula, based on the (dichotomous) distribution of the exposure of interest in the population. Few present or explain Miettinen's formula, based on the distribution of the exposure in the cases; and even fewer pr…
Exposure to varying levels of contaminants and symptoms among workers in two office buildings
OBJECTIVES: We hypothesized that exposure to contaminants would be associated with symptoms reported by office workers. METHODS: In two mechanically ventilated office buildings in. Montreal, the outdoor air supply was manipulated for 6 weeks, while symptoms were reported and environmental parameters were measured at multiple sites. RESULTS: Contaminant concentrations varied considerably, in part related to experimental changes in outdoor air supp…
Confidence Intervals and Sample-size Calculations for the Sisterhood Method of Estimating Maternal Mortality
James A. Hanley, Catherine A. Hagen, Tesfaye Shiferaw, Confidence Intervals and Sample-size Calculations for the Sisterhood Method of Estimating Maternal Mortality, Studies in Family Planning, Vol. 27, No. 4 (Jul. - Aug., 1996), pp. 220-227
Visits to physicians before and after exposure to urea formaldehyde foam insulation
The average number of visits to a physician made by a sample of 351 residents of homes insulated with urea formaldehyde foam insulation in Montreal in the one year period before exposure was 5.25, and in the year following 5.62, an increase of 7 per cent (odds ratio 1.07, 95% CI = 1.00, 1.15). The increase in visits in the post insulation year was limited to subjects who had the product installed in the winter (OR = 1.48, 95% CI = 1.18,1.85), and…
Standard error of the kappa statistic
Standard error of the kappa statistic
A heuristic approach to the formulas for population attributable fraction
BACKGROUND: As the definitional formula for population attributable fraction is not usually directly usable in applications, separate estimation formulas are required. However, most epidemiology textbooks limit their coverage to Levin's formula, based on the (dichotomous) distribution of the exposure of interest in the population. Few present or explain Miettinen's formula, based on the distribution of the exposure in the cases; and even fewer pr…
Aids in the family and community
Confidence Intervals and Sample-size Calculations for the Sisterhood Method of Estimating Maternal Mortality
James A. Hanley, Catherine A. Hagen, Tesfaye Shiferaw, Confidence Intervals and Sample-size Calculations for the Sisterhood Method of Estimating Maternal Mortality, Studies in Family Planning, Vol. 27, No. 4 (Jul. - Aug., 1996), pp. 220-227
The (Im)precision of Life Expectancy Numbers
Life expectancy figures for countries and population segments are increasingly being reported to more decimal places and used as indicators of the strengths or failings of countries’ health and social systems. Reports seldom quantify their intrinsic statistical imprecision or the age-specific numbers of deaths that determine them. The SE formulas available to compute imprecision are all model based. This note adds a more intuitive data-based SE m…
Measuring the Mortality Impact of Breast Cancer Screening
Exposure to varying levels of contaminants and symptoms among workers in two office buildings
OBJECTIVES: We hypothesized that exposure to contaminants would be associated with symptoms reported by office workers. METHODS: In two mechanically ventilated office buildings in. Montreal, the outdoor air supply was manipulated for 6 weeks, while symptoms were reported and environmental parameters were measured at multiple sites. RESULTS: Contaminant concentrations varied considerably, in part related to experimental changes in outdoor air supp…
Standard error of the kappa statistic
Standard error of the kappa statistic
Visits to physicians before and after exposure to urea formaldehyde foam insulation
The average number of visits to a physician made by a sample of 351 residents of homes insulated with urea formaldehyde foam insulation in Montreal in the one year period before exposure was 5.25, and in the year following 5.62, an increase of 7 per cent (odds ratio 1.07, 95% CI = 1.00, 1.15). The increase in visits in the post insulation year was limited to subjects who had the product installed in the winter (OR = 1.48, 95% CI = 1.18,1.85), and…
Exposure to varying levels of contaminants and symptoms among workers in two office buildings
OBJECTIVES: We hypothesized that exposure to contaminants would be associated with symptoms reported by office workers. METHODS: In two mechanically ventilated office buildings in. Montreal, the outdoor air supply was manipulated for 6 weeks, while symptoms were reported and environmental parameters were measured at multiple sites. RESULTS: Contaminant concentrations varied considerably, in part related to experimental changes in outdoor air supp…
Confidence Intervals and Sample-size Calculations for the Sisterhood Method of Estimating Maternal Mortality
James A. Hanley, Catherine A. Hagen, Tesfaye Shiferaw, Confidence Intervals and Sample-size Calculations for the Sisterhood Method of Estimating Maternal Mortality, Studies in Family Planning, Vol. 27, No. 4 (Jul. - Aug., 1996), pp. 220-227
A heuristic approach to the formulas for population attributable fraction
BACKGROUND: As the definitional formula for population attributable fraction is not usually directly usable in applications, separate estimation formulas are required. However, most epidemiology textbooks limit their coverage to Levin's formula, based on the (dichotomous) distribution of the exposure of interest in the population. Few present or explain Miettinen's formula, based on the distribution of the exposure in the cases; and even fewer pr…
Statistical Analysis of Correlated Data Using Generalized Estimating Equations
The method of generalized estimating equations (GEE) is often used to analyze longitudinal and other correlated response data, particularly if responses are binary. However, few descriptions of the method are accessible to epidemiologists. In this paper, the authors use small worked examples and one real data set, involving both binary and quantitative response data, to help end-users appreciate the essence of the method. The examples are simple …
Physician and Practice Characteristics Associated with the Early Utilization of New Prescription Drugs
BACKGROUND: Prescription of new drugs contributes to substantial increases in annual drug expenditures. A small proportion of physicians appear to be early users of new prescription drugs and little is known about their characteristics. OBJECTIVE: To estimate the initial utilization rate of new prescription drugs among physicians, and the physician and practice characteristics associated with early use. DESIGN: Cumulative prospective assessment o…
Factors Associated With Pattern of Care Before Surgery for Breast Cancer in Quebec Between 1992 and 1997
BACKGROUND: Practice guidelines for breast cancer emphasize the importance of establishing an accurate diagnosis using a minimum number of procedures and selecting optimal treatment regimens. Understanding the determinants of waiting time is essential to develop optimum interventions to reduce delay. OBJECTIVES: The purpose of this study is to estimate the extent to which variability in 1) the number of procedures before surgery and 2) waiting ti…
Using the Patient Generated Index to Evaluate Response Shift Post-stroke
Change in quality of life of people with stroke over time
Risk factors for tobacco dependence in adolescent smokers
TD risk in adolescents is associated with intensity of recent cigarette consumption, while the role of more distant cigarette consumption appears small; subjects with slow nicotine metabolism and those with more depression symptoms are at increased risk of becoming tobacco dependent. The risk of being tobacco dependent is considerably higher in subjects who had previously developed the TD state
Ranking Hospitals According to Acute Myocardial Infarction Mortality
OBJECTIVE: The objective of this population-based observational cohort study was to estimate the extent to which the inclusion/exclusion of transferred patients with acute myocardial infarction (AMI) impacts on hospital performance rankings. SUBJECTS: The authors studied 91,633 adult patients admitted to 116 acute care hospitals in Quebec, Canada, with a primary diagnosis of AMI between 1992 and 1999. MAIN OUTCOME MEASURE: Hospital performance ra…
Aids in the family and community
Educational Disparities in Aids-affected Communities
To inform policy, our study identifies which populations of AIDS-affected children are in need of educational assistance. Using the 2004--2005 Malawi Integrated Household Survey, multilevel models examine the association between AIDS-related impacts and educational outcomes. Double and maternal orphans are more likely to be out of school and behind in grade level; living with an adult suffering from a potential AIDS-related illness is also associ…
Measuring the Mortality Impact of Breast Cancer Screening
The (Im)precision of Life Expectancy Numbers
Life expectancy figures for countries and population segments are increasingly being reported to more decimal places and used as indicators of the strengths or failings of countries’ health and social systems. Reports seldom quantify their intrinsic statistical imprecision or the age-specific numbers of deaths that determine them. The SE formulas available to compute imprecision are all model based. This note adds a more intuitive data-based SE m…
Medicine (14 works) · Internal Medicine (6 works) · Mathematics (6 works) · Statistics (6 works) · Public health (5 works) · Demography (4 works) · Environmental health (4 works) · Gerontology (4 works) · Internal Medicine (4 works) · Nursing (4 works)