Meeker, John D, Missmer, Stacey A, Altshul, Larisa, Vitonis, Allison F, Ryan, Louise, Cramer, Daniel W, ...
Abstract Background Exposure to persistent organic pollutants, including polychlorinated biphenyls (PCBs) and organochlorine pesticides, is widespread among the general population. There is evidence...
Clark, Cheryl R, Kawachi, Ichiro, Ryan, Louise, Ertel, Karen, Fay, Martha E, Berkman, Lisa F
Abstract Background We investigated whether lack of perceived neighborhood safety due to crime, or living in high crime neighborhoods was associated with incident mobility disability in elderly...
Susan M. Duty, Antonia M. Calafat, Manori J. Silva, John W. Brock, Louise Ryan, Zuying Chen, ...
ABSTRACT: The general population is exposed to phthalates through consumer products, diet, and medical devices. The present study explored whether phthalates, reproductive toxins in laboratory...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie, Ryan, Louise, Summerhayes, Richard, Beard, John
Abstract Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
McCarty, Kathleen M., Smith, Thomas J., Zhou, Wei, Gonzalez, Ernesto, Quamruzzaman, Quazzi, Rahman, Mahmuder, ...
Background: Single-nucleotide polymorphisms in genes related to DNA repair capacity and ultraviolet exposure have not been well investigated in relation to skin lesions associated with arsenic...
Migrant women, social networks and motherhood: the experiences of Irish nurses in Britain. (2007)
Based on a qualitative study of 26 migrant nurses in Britain. Louise Ryan carried out all the interviews, analysed the data and is the sole author of all the publications.
Migrant women, social networks and motherhood: the experiences of Irish nurses in Britain. (2007)
Based on a qualitative study of 26 migrant nurses in Britain. Louise Ryan carried out all the interviews, analysed the data and is the sole author of all the publications.
A case-control study of GSTpolymorphisms and arsenic related skin lesions (2007)
McCarty, Kathleen M, Ryan, Louise, Houseman, E Andres, Williams, Paige L, Miller, David P, Quamruzzaman, Quazi, ...
Abstract Background Polymorphisms in GSTT1 , GSTM1 and GSTP1 impact detoxification of carcinogens by GSTs and have been reported to increase susceptibility to environmentally related health outcomes....
The study is an historical investigation exploring the impact of the Carnegie Corporations philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
The study is an historical investigation exploring the impact of the Carnegie Corporation’s philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
The study is an historical investigation exploring the impact of the Carnegie Corporation’s philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
The study is an historical investigation exploring the impact of the Carnegie Corporation’s philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
The study is an historical investigation exploring the impact of the Carnegie Corporation’s philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
The study is an historical investigation exploring the impact of the Carnegie Corporation’s philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
The study is an historical investigation exploring the impact of the Carnegie Corporations philanthropic cultural and educational activities in North America and Australia during the 1940s. The...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
International Journal of Health (2007)
Arul Earnest, Geoff Morgan, Kerrie Mengersen, Louise Ryan, Richard Summerhayes, John Beard, ...
This Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Evaluating the effect of neighbourhood...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
Earnest, Arul, Morgan, Geoff, Mengersen, Kerrie L., Ryan, Louise, Summerhayes, Richard, Beard, John
Background The Conditional Autoregressive (CAR) model is widely used in many small-area ecological studies to analyse outcomes measured at an areal level. There has been little evaluation of the...
Tick the box please: a reflexive approach to doing quantitative social research. (2006)
Publication arose out of a quantitative study on the health of Irish migrants funded by the Department of Health and a qualitative follow up study funded by the ESRC (of which Ryan was a grant...
Tick the box please: a reflexive approach to doing quantitative social research. (2006)
Publication arose out of a quantitative study on the health of Irish migrants funded by the Department of Health and a qualitative follow up study funded by the ESRC (of which Ryan was a grant...
Depression in Irish migrants living in London: Case control study. (2006)
Ryan, Louise, Blizard, R., Golden, Anne, Leavey, G.
This is based on a quantitative study funded by the National Health Service Executive and carried out at the Royal Free Hospital 2003-2004. Louise Ryan was the lead researcher on this project,...
Depression in Irish migrants living in London: Case control study. (2006)
Ryan, Louise, Blizard, R., Golden, Anne, Leavey, G.
This is based on a quantitative study funded by the National Health Service Executive and carried out at the Royal Free Hospital 2003-2004. Louise Ryan was the lead researcher on this project,...
Generalized linear mixed models (GLMMs) provide an elegant framework for the analysis of correlated data. Due to the non-closed form of the likelihood, GLMMs are often fit by computational procedures...
Generalized linear mixed models (GLMMs) provide an elegant framework for the analysis of correlated data. Due to the non-closed form of the likelihood, GLMMs are often fit by computational procedures...
Generalized linear mixed models (GLMMs) provide an elegant framework for the analysis of correlated data. Due to the non-closed form of the likelihood, GLMMs are often fit by computational procedures...
Generalized linear mixed models (GLMMs) provide an elegant framework for the analysis of correlated data. Due to the non-closed form of the likelihood, GLMMs are often fit by computational procedures...
Computational Techniques for Spatial Logistic Regression with Large Datasets (2005)
Paciorek, Christopher J., Ryan, Louise
In epidemiological work, outcomes are frequently non-normal, sample sizes may be large, and effects are often small. To relate health outcomes to geographic risk factors, fast and powerful methods...
Computational Techniques for Spatial Logistic Regression with Large Datasets (2005)
Paciorek, Christopher J., Ryan, Louise
In epidemiological work, outcomes are frequently non-normal, sample sizes may be large, and effects are often small. To relate health outcomes to geographic risk factors, fast and powerful methods...
Computational Techniques for Spatial Logistic Regression with Large Datasets (2005)
Paciorek, Christopher J., Ryan, Louise
In epidemiological work, outcomes are frequently non-normal, sample sizes may be large, and effects are often small. To relate health outcomes to geographic risk factors, fast and powerful methods...
Computational Techniques for Spatial Logistic Regression with Large Datasets (2005)
Paciorek, Christopher J., Ryan, Louise
In epidemiological work, outcomes are frequently non-normal, sample sizes may be large, and effects are often small. To relate health outcomes to geographic risk factors, fast and powerful methods...
Inference on Survival Data with Covariate Measurement Error - An Imputation-based Approach (2005)
We propose a new method for fitting proportional hazards models with error-prone covariates. Regression coefficients are estimated by solving an estimating equation that is the average of the partial...
Inference on Survival Data with Covariate Measurement Error - An Imputation-based Approach (2005)
We propose a new method for fitting proportional hazards models with error-prone covariates. Regression coefficients are estimated by solving an estimating equation that is the average of the partial...
Inference on Survival Data with Covariate Measurement Error - An Imputation-based Approach (2005)
We propose a new method for fitting proportional hazards models with error-prone covariates. Regression coefficients are estimated by solving an estimating equation that is the average of the partial...
Inference on Survival Data with Covariate Measurement Error - An Imputation-based Approach (2005)
We propose a new method for fitting proportional hazards models with error-prone covariates. Regression coefficients are estimated by solving an estimating equation that is the average of the partial...
Phthalate exposure and reproductive hormones in adult men (2005)
Duty, Susan M., Calafat, Antonia M., Silva, Manori J., Ryan, Louise, Hauser, Russ
BACKGROUND: Phthalates are used in personal and consumer products, food packaging materials, and polyvinyl chloride plastics and have been measured in the majority of the general population of the...
Houseman, E. Andres, Coull, Brent, Ryan, Louise
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed modesl and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Ryan, Louise, Coull, Brent
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed models and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Coull, Brent, Ryan, Louise
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed modesl and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Ryan, Louise, Coull, Brent
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed models and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Coull, Brent, Ryan, Louise
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed modesl and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Ryan, Louise, Coull, Brent
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed models and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Coull, Brent, Ryan, Louise
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed modesl and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Houseman, E. Andres, Ryan, Louise, Coull, Brent
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed models and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Urinary levels of insecticide metabolites and DNA damage in human sperm (2004)
Meeker, John D., Singh, Narendra P., Ryan, Louise, Duty, Susan M., Barr, Dana B., Herrick, Robert F., ...
BACKGROUND: Members of the general population are exposed to non-persistent insecticides at low levels. The present study explored whether environmental exposures to carbaryl and chlorpyrifos are...
Urinary levels of insecticide metabolites and DNA damage in human sperm (2004)
Meeker, John D., Singh, Narendra P., Ryan, Louise, Duty, Susan M., Barr, Dana B., Herrick, Robert F., ...
BACKGROUND: Members of the general population are exposed to non-persistent insecticides at low levels. The present study explored whether environmental exposures to carbaryl and chlorpyrifos are...
Phthalate exposure and reproductive hormones in adult men (2004)
Duty, Susan M., Calafat, Antonia M., Silva, Manori J., Ryan, Louise, Hauser, Russ
BACKGROUND: Phthalates are used in personal and consumer products, food packaging materials, and polyvinyl chloride plastics and have been measured in the majority of the general population of the...
Paternal Smoking and Pregnancy Loss: A Prospective Study Using a Biomarker of Pregnancy (2004)
Venners, Scott A., Wang, Xiaobin, Chen, Changzhong, Wang, Lihua, Chen, Dafang, Guang, Wenwei, ...
Results of studies on paternal smoking and spontaneous abortions have been inconsistent. The authors examined the effect of paternal smoking on the risk of pregnancy loss in a prospective cohort of...
Epidemiologically Based Environmental Risk Assessment (2003)
Environmental health research aims to discover and understand the links between environmental exposure and disease and to inform the regulatory community so that society can be protected against...
Based on qualitative research using in-depth life-history interviews with older migrants. Louise Ryan carried out the research, analysed the data and was the sole author of the research publications.
Based on qualitative research using in-depth life-history interviews with older migrants. Louise Ryan carried out the research, analysed the data and was the sole author of the research publications.
Robust benchmark dose determination based on profile score methods (2002)
AERTS, Marc, CLAESKENS, Gerda, MOLENBERGHS, Geert, Ryan, Louise
An exact trend test for correlated binary data (2001)
Corcoran, Christopher, Ryan, Louise, Mehta, Cyrus, Senchaudhuri, Pralay, Patel, Nitin
The problem of testing a dose-response relationship in the presence of exchangeably correlated binary data has been addressed using a variety of models. Most commonly used approaches are derived from...
An exact trend test for correlated binary data (2001)
Corcoran, Christopher, Ryan, Louise, Mehta, Cyrus, Senchaudhuri, Pralay, Patel, Nitin
The problem of testing a dose-response relationship in the presence of exchangeably correlated binary data has been addressed using a variety of models. Most commonly used approaches are derived from...
An exact trend test for correlated binary data (2001)
Corcoran, Christopher, Ryan, Louise, Mehta, Cyrus, Senchaudhuri, Pralay, Patel, Nitin, MOLENBERGHS, Geert
The problem of testing a dose-response relationship in the presence of exchangeably correlated binary data has been addressed using a variety of models. Most commonly used approaches are derived from...
Tofu Consumption and Blood Lead Levels in Young Chinese Adults (2001)
Chen, Changzhong, Wang, Xiaobin, Chen, Dafang, Li, Guang, Ronnenberg, Alayne, Watanabe, Hirokatsu, ...
Tofu is a commonly consumed food in China. Tofu may interfere with lead absorption and retention because of its high calcium content. In this observational study, the authors examined whether dietary...
Declerck, Lieven, Ryan, Louise
Risk assessment for developmental toxicity studies in rodents is faced with the fairly involved data structure of clustered multivariate binary outcomes. While likelihood methods for this setting do...
Litter-based methods in developmental toxicity risk assessment (2000)
Declerck, Lieven, Ryan, Louise
Developmental toxicity experiments are designed to assess potential adverse effects of drugs and other exposures on developing fetuses from pregnant dams. Extrapolation to humans is a very difficult...
Declerck, Lieven, Ryan, Louise
Risk assessment for developmental toxicity studies in rodents is faced with the fairly involved data structure of clustered multivariate binary outcomes. While likelihood methods for this setting do...
Litter-based methods in developmental toxicity risk assessment (2000)
DECLERCK, Lieven, MOLENBERGHS, Geert, AERTS, Marc, Ryan, Louise
Developmental toxicity experiments are designed to assess potential adverse effects of drugs and other exposures on developing fetuses from pregnant dams. Extrapolation to humans is a very difficult...
GEYS, Helena, MOLENBERGHS, Geert, DECLERCK, Lieven, Ryan, Louise
Risk assessment for developmental toxicity studies in rodents is faced with the fairly involved data structure of clustered multivariate binary outcomes. While likelihood methods for this setting do...
Analysis of dichotomous outcome data for community intervention studies (2000)
Bellamy, Scarlett L., Gibberd, Robert, Parkinson, Lynne, Howley, Peter, Kennedy, Bruce, Klar, Neil, ...
Community intervention trials are becoming increasingly popular as a tool for evaluating the effectiveness of health education and intervention strategies. Typically, units such as households,...
Analysis of dichotomous outcome data for community intervention studies (2000)
Bellamy, Scarlett L., Gibberd, Robert, Parkinson, Lynne, Howley, Peter, Kennedy, Bruce, Klar, Neil, ...
Community intervention trials are becoming increasingly popular as a tool for evaluating the effectiveness of health education and intervention strategies. Typically, units such as households,...
Wang, Xiaobin, Chen, Dafang, Niu, Tianhua, Wang, Zhaoxi, Wang, Lihua, Ryan, Louise, ...
This study investigated whether the association between low level benzene exposure and shortened gestation is modified by two susceptibility genes, CYP1A1 and GSTT1. This report includes 542 (302...
Pseudo-likelihood modelling of multivariate outcomes in developmental toxicology (1999)
The primary goal of this article is to determine benchmark doses based on the ethylene glycol study, which comprises data from a developmental toxicity study in mice. Because the data involve a...
Pseudo-likelihood modelling of multivariate outcomes in developmental toxicology (1999)
The primary goal of this article is to determine benchmark doses based on the ethylene glycol study, which comprises data from a developmental toxicity study in mice. Because the data involve a...
Pseudo-likelihood modelling of multivariate outcomes in developmental toxicology (1999)
GEYS, Helena, MOLENBERGHS, Geert, Ryan, Louise
The primary goal of this article is to determine benchmark doses based on the ethylene glycol study, which comprises data from a developmental toxicity study in mice. Because the data involve a...
Hansen, Richard M., Ryan, Louise, Anderson, Tom, Krzywda, Beth, Quebbeman, Edward, Benson, Al, ...
Background: Phase II studies of fluorouracil (5-FU) administered by protracted intravenous infusion have suggested an improved response rate and decreased toxicity profile when compared with 5-FU...
Analysis of competing risks survival data when some failure types are missing (1995)
GOETGHEBEUR, ELS, RYAN, LOUISE
We propose a method to analyse competing risks survival data when failure types are missing for some individuals. Our approach is based on a standard proportional hazards structure for each of the...
Relation of Female Infertility to Consumption of Caffeinated Beverages (1993)
Grodstein, Francine, Goldman, Marlene B., Ryan, Louise, Cramer, Daniel W.
Several studies have reported an association between caffeine intake and delay to conception. To study this relation further, the authors examined caffeine use in 1,050 women with primary infertility...
Stern, Alan H, Jacobson, Joseph L, Ryan, Louise, Burke, Thomas A
In 2000, the National Research Council (NRC), an arm of the National Academy of Sciences, released a report entitled, "Toxicological Effects of Methylmercury." The overall conclusion of that report...
Environmental organochlorines and semen quality: results of a pilot study.
Hauser, Russ, Altshul, Larisa, Chen, Zuying, Ryan, Louise, Overstreet, James, Schiff, Isaac, ...
There have been numerous studies that suggest that sperm concentrations (sperm counts) are declining in men. However, other studies suggest that sperm counts are not declining or may be increasing in...
Duty, Susan M, Singh, Narendra P, Silva, Manori J, Barr, Dana B, Brock, John W, Ryan, Louise, ...
Phthalates are industrial chemicals widely used in many commercial applications. The general population is exposed to phthalates through consumer products as well as through diet and medical...
Hauser, Russ, Chen, Zuying, Pothier, Lucille, Ryan, Louise, Altshul, Larisa
Scientific and public concern exists about potential reproductive health effects of persistent chlorinated organic chemicals, such as polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane...
Meeker, John D., Ryan, Louise, Barr, Dana B., Herrick, Robert F., Bennett, Deborah H., Bravo, Roberto, ...
Most of the general population is exposed to carbaryl and other contemporary-use insecticides at low levels. Studies of laboratory animals, in addition to limited human data, show an association...
Effect of Environmental Tobacco Smoke on Levels of Urinary Hormone Markers
Chen, Changzhong, Wang, Xiaobin, Wang, Lihua, Yang, Fan, Tang, Genfu, Xing, Houxun, ...
Our recent study showed a dose–response relationship between environmental tobacco smoke (ETS) and the risk of early pregnancy loss. Smoking is known to affect female reproductive hormones. We...
Within-Home versus Between-Home Variability of House Dust Endotoxin in a Birth Cohort
Abraham, Joseph H., Gold, Diane R., Dockery, Douglas W., Ryan, Louise, Park, Ju-Hyeong, Milton, Donald K.
Endotoxin exposure has been proposed as an environmental determinant of allergen responses in children. To better understand the implications of using a single measurement of house dust endotoxin to...
McCarty, Kathleen M., Houseman, E. Andres, Quamruzzaman, Quazi, Rahman, Mahmuder, Mahiuddin, Golam, Smith, Thomas, ...
An established exposure–response relationship exists between water arsenic levels and skin lesions. Results of previous studies with limited historical exposure data, and laboratory animal studies...
A case-control study of GST polymorphisms and arsenic related skin lesions
McCarty, Kathleen M, Ryan, Louise, Houseman, E Andres, Williams, Paige L, Miller, David P, Quamruzzaman, Quazi, ...
Arsenic Methylation, GSTT1, GSTM1, GSTP1 Polymorphisms, and Skin Lesions
McCarty, Kathleen M., Chen, Yen-Ching, Quamruzzaman, Quazi, Rahman, Mahmuder, Mahiuddin, Golam, Hsueh, Yu-Mei, ...
Inference on Survival Data with Covariate Measurement Error - An Imputation-based Approach
We propose a new method for fitting proportional hazards models with error-prone covariates. Regression coefficients are estimated by solving an estimating equation that is the average of the partial...
A Multi-state Piecewise Exponential Model of Hospital Outcomes after Injury
David Clark, Louise Ryan, F. L. Lucas
To allow more accurate prediction of hospital length of stay (LOS) after serious injury or illness, a multi-state model is proposed, in which transitions from the hospitalized state to three possible...
Autocorrelation in real-time continuous monitoring of microenvironments
E. Andres Houseman, Louise Ryan, Jonathan I. Levy, John D. Spengler
Interpretation of continuous measurements in microenvironmental studies and exposure assessments can be complicated by autocorrelation, the implications of which are often not fully addressed. We...
E. Andres Houseman, Brent Coull, Louise Ryan
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed modesl and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
E. Andres Houseman, Louise Ryan, Brent Coull
Despite the widespread popularity of linear models for correlated outcomes (e.g. linear mixed models and time series models), distribution diagnostic methodology remains relatively underdeveloped in...
Survival Analysis with Heterogeneous Covariate Measurement Error
Cox models, mistimed covariates, asymptotic bias analysis, corrected estimator, asymptotic relative efficiency, Schoenfeld's sample size formula,
Witnessing Community Violence in Residential Neighborhoods: A Mental Health Hazard for Urban Women
Clark, Cheryl, Ryan, Louise, Kawachi, Ichiro, Canner, Marina J., Berkman, Lisa, Wright, Rosalind J.
We examined the prevalence and psychological correlates of witnessing community violence among women of low socioeconomic status living in urban neighborhoods in the northeastern United States. Three...
Variability in Biomarkers of Arsenic Exposure and Metabolism in Adults over Time
Kile, Molly L., Hoffman, Elaine, Hsueh, Yu-Mei, Afroz, Sakila, Quamruzzaman, Quazi, Rahman, Mahmuder, ...