Reduced excretion of a melatonin metabolite in workers exposed to 60 Hz magnetic fields.

abstract：:Ecologic (aggregate) data are widely available and widely utilized in epidemiologic studies. However, ecologic bias, which arises because aggregate data cannot characterize within-group variability in exposure and confounder variables, can only be removed by supplementing ecologic data with individual-level data. Here...

journal_title：American journal of epidemiology

authors： Wakefield J,Haneuse SJ

更新日期：2008-04-15 00:00:00

abstract：:In prospective studies, disease rates during follow-up are typically analyzed with respect to the values of factors measured during an initial baseline survey. However, because of "regression dilution," this generally tends to underestimate the real associations of disease rates with the "usual" levels of such risk fa...

journal_title：American journal of epidemiology

authors： Clarke R,Shipley M,Lewington S,Youngman L,Collins R,Marmot M,Peto R

更新日期：1999-08-15 00:00:00

abstract：:After screening out inappropriate or doubtful covariates on the basis of background knowledge, one may still be left with many potential confounders. It is then tempting to use statistical variable-selection methods to reduce the number used for adjustment. Nonetheless, there is no agreement on how selection should be...

journal_title：American journal of epidemiology

authors： Greenland S

更新日期：2008-03-01 00:00:00

abstract：:A standard approach to analysis of case-cohort data involves fitting log-linear models. In this paper, we describe how standard statistical software can be used to fit a broad class of general relative rate models to case-cohort data and derive confidence intervals. We focus on a case-cohort design in which a roster h...

journal_title：American journal of epidemiology

authors： Richardson DB,Langholz B,Kelly-Reif K

更新日期：2019-02-01 00:00:00

abstract：:A population of 968 pregnant Navajo women was followed in a prospective study conducted from 1980 to 1983 at the Indian Health Service Hospitals in Gallup and Crownpoint, New Mexico. The purpose of the study was to examine social and cultural influences on obstetric and neonatal complications. The extent of traditiona...

journal_title：American journal of epidemiology

authors： Boyce WT,Schaefer C,Harrison HR,Haffner WH,Lewis M,Wright AL

更新日期：1986-08-01 00:00:00

abstract：:The association between a single interpregnancy interval (IPI) and birth outcomes has not yet been explored using matched methods. We modeled the odds of preterm birth, being small for gestational age, and having low birth weight in a second, live-born infant in a cohort of 192,041 sibling pairs born in Western Austra...

journal_title：American journal of epidemiology

authors： Regan AK,Ball SJ,Warren JL,Malacova E,Padula A,Marston C,Nassar N,Stanley F,Leonard H,de Klerk N,Pereira G

更新日期：2019-01-01 00:00:00

abstract：:Previous studies have provided conflicting evidence on whether being a family caregiver is associated with increased or decreased risk for all-cause mortality. This study examined whether 3,503 family caregivers enrolled in the national Reasons for Geographic and Racial Differences in Stroke (REGARDS) Study showed dif...

journal_title：American journal of epidemiology

authors： Roth DL,Haley WE,Hovater M,Perkins M,Wadley VG,Judd S

更新日期：2013-11-15 00:00:00

abstract：:Circumstances in which both randomized controlled trial and observational study data are available provide an important opportunity to identify biases and improve study design and analysis procedures. In addition, joint analyses of data from the two sources can extend clinical trial findings. The US Women's Health Ini...

journal_title：American journal of epidemiology

authors： Prentice RL,Langer RD,Stefanick ML,Howard BV,Pettinger M,Anderson GL,Barad D,Curb JD,Kotchen J,Kuller L,Limacher M,Wactawski-Wende J,Women's Health Initiative Investigators.

更新日期：2006-04-01 00:00:00

abstract：:The association between standardized cancer mortality rate ratios from 1969-1978 and dietary practices was examined in an ecologic study of the 24 counties of Sweden by means of several independent data sources. The study supports the hypothesis that a high intake of cereal fiber protects against colorectal cancer (r ...

journal_title：American journal of epidemiology

authors： Rosén M,Nyström L,Wall S

更新日期：1988-01-01 00:00:00

abstract：:Growing knowledge about gene-disease associations will lead to new opportunities for genetic testing. Many experts predict that genetic testing will become increasingly important as a guide to prevention, clinical management, and drug treatment based on genetic susceptibilities. As part of a Human Genetic Epidemiology...

journal_title：American journal of epidemiology

authors： Burke W,Atkins D,Gwinn M,Guttmacher A,Haddow J,Lau J,Palomaki G,Press N,Richards CS,Wideroff L,Wiesner GL

更新日期：2002-08-15 00:00:00

abstract：:Ozone is associated with adverse health; however, less is known about vulnerable/sensitive populations, which we refer to as sensitive populations. We systematically reviewed epidemiologic evidence (1988-2013) regarding sensitivity to mortality or hospital admission from short-term ozone exposure. We performed meta-an...

journal_title：American journal of epidemiology

authors： Bell ML,Zanobetti A,Dominici F

更新日期：2014-07-01 00:00:00

abstract：:We used full-system-estimation instrumental-variables simultaneous equations modeling (IV-SEM) to examine physical activity relative to body mass index (BMI; weight (kg)/height (m)(2)) using 25 years of data (1985/1986 to 2010/2011) from the Coronary Artery Risk Development in Young Adults (CARDIA) Study (n = 5,115; a...

journal_title：American journal of epidemiology

authors： Meyer KA,Guilkey DK,Tien HC,Kiefe CI,Popkin BM,Gordon-Larsen P

更新日期：2016-09-15 00:00:00

abstract：:The "fetuses at risk" concept of gestational-age-specific mortality proposed by Yudkin et al. (Lancet 1987;1:1192-4) and extended by various researchers is becoming popular in perinatal and pediatric epidemiology. However, the definitions using this concept have led to a puzzling phenomenon in which mortality rates ap...

journal_title：American journal of epidemiology

authors： Cheung YB

更新日期：2004-08-01 00:00:00

abstract：:There have been few prospective studies relating diet to pancreatic cancer, with most having fewer than 100 cases and only one examining dietary nutrients. The authors prospectively examined dietary factors hypothesized to be associated with exocrine pancreatic cancer in the Alpha-Tocopherol, Beta-Carotene Cancer Prev...

journal_title：American journal of epidemiology

authors： Stolzenberg-Solomon RZ,Pietinen P,Taylor PR,Virtamo J,Albanes D

更新日期：2002-05-01 00:00:00

abstract：:George W. Comstock (1915-2007), MD, MPH, DrPH, was lecturer and then professor of epidemiology at the Johns Hopkins University School of Hygiene and Public Health from 1956 to 2007 and served as editor-in-chief of the American Journal of Epidemiology from 1979 to 1988. This interview of George W. Comstock took place i...

journal_title：American journal of epidemiology

authors： Morabia A

更新日期：2013-04-01 00:00:00

abstract：:The authors hypothesized that genetic predisposition to diabetes complications would be more evident among low-risk individuals and aimed to identify genes related to developing complications (confirmed distal symmetric polyneuropathy, overt nephropathy, or coronary artery disease) in low-risk groups. Participants in ...

journal_title：American journal of epidemiology

authors： Costacou T,Chang Y,Ferrell RE,Orchard TJ

更新日期：2006-11-01 00:00:00

abstract：:In randomized controlled trials, the intention-to-treat estimator provides an unbiased estimate of the causal effect of treatment assignment on the outcome. However, patients often want to know what the effect would be if they were to take the treatment as prescribed (the patient-oriented effect), and several research...

journal_title：American journal of epidemiology

authors： Steele RJ,Shrier I,Kaufman JS,Platt RW

更新日期：2015-09-15 00:00:00

abstract：:This study examines the degree to which job and marital satisfaction and participation in leisure activities could predict concurrent and future health status relative to ethnicity, class and occupational factors, and mental health. Data were obtained from a longitudinal study of a random sample of 1034 Manhattan fami...

journal_title：American journal of epidemiology

authors： Gersten JC,Friis R,Langner TS

更新日期：1976-03-01 00:00:00

abstract：:Although the percentage of US drivers with valid driver's licenses varies from state to state, it has historically been high enough to constitute a useful sampling frame for many public health purposes. Over the past decade, states have had to restrict access to this information to comply with the Driver's Privacy Pro...

journal_title：American journal of epidemiology

authors： Walsh MC,Trentham-Dietz A,Palta M

更新日期：2011-06-15 00:00:00

abstract：:If interviewers' personal habits or attitudes influence respondents' answers to given questions, this may lead to bias, which should be taken into consideration when analyzing data. The authors examined a potential interviewer effect in a study of pregnant women in which exposure data were obtained through computer-as...

journal_title：American journal of epidemiology

authors： Nybo Andersen AM,Olsen J

更新日期：2002-01-01 00:00:00

abstract：:Androgens have an extensive influence on brain development in regions of the brain that are relevant for autism spectrum disorder (ASD), yet their etiological involvement remains unclear. Hypospadias (abnormal positioning of the urethral opening) and cryptorchidism (undescended testes) are 2 relatively common male bir...

journal_title：American journal of epidemiology

authors： Rotem RS,Chodick G,Davidovitch M,Hauser R,Coull BA,Weisskopf MG

更新日期：2018-04-01 00:00:00

abstract：:The authors conducted a prospective study of risk factors for intrauterine growth retardation (birth weight less than a standard (race- and sex-adjusted) 10th percentile for gestational age) and preterm birth (birth prior to 37 weeks gestation) in a high-risk, inner-city, obstetric population, with special interest in...

journal_title：American journal of epidemiology

authors：

更新日期：1989-06-01 00:00:00

abstract：:The Mendelian randomization approach exploits genetic variants to improve causal inference when using observational data. The authors examined the relation between long-term obesity and common mental disorders (CMD) by utilizing the known relation between fat mass and obesity-associated (FTO) genotype and body mass in...

journal_title：American journal of epidemiology

authors： Kivimäki M,Jokela M,Hamer M,Geddes J,Ebmeier K,Kumari M,Singh-Manoux A,Hingorani A,Batty GD

更新日期：2011-02-15 00:00:00

abstract：:Leptin is an important regulator of the mass of adipose tissue and of body weight; it operates by inhibiting food intake and stimulating energy expenditure. Some polymorphic genes involved in the regulation of leptin-the leptin gene (LEP A19G), the leptin receptor gene (LEPR Q223R, K109R, and K656N), and the peroxisom...

journal_title：American journal of epidemiology

authors： Paracchini V,Pedotti P,Taioli E

更新日期：2005-07-15 00:00:00

abstract：:This study examines the familial clustering and relative influence of genetic and environmental effects on postterm birth in the Swedish population by considering all full- and half-siblings born in Sweden between 1992 and 2004. Of the eligible 475,429 births, 21% occurred after 41 completed weeks and 5.5% occurred af...

journal_title：American journal of epidemiology

authors： Oberg AS,Frisell T,Svensson AC,Iliadou AN

更新日期：2013-03-15 00:00:00

abstract：:A model for a two-stage selection program based upon normally distributed variables is examined. Subjects in the upper part of the distribution of first-stage observations are retained and subsequently observed an additional number of times in a second stage. Subjects in the upper part of the distribution of second-st...

journal_title：American journal of epidemiology

authors： McMahan CA

更新日期：1982-08-01 00:00:00

abstract：:Analgesic use may reduce ovarian cancer risk, possibly through antiinflammatory or antigonadotropic effects. The authors conducted a population-based, case-control study in Washington State that included 812 women aged 35-74 years who were diagnosed with epithelial ovarian cancer between 2002 and 2005 and 1,313 contro...

journal_title：American journal of epidemiology

authors： Hannibal CG,Rossing MA,Wicklund KG,Cushing-Haugen KL

更新日期：2008-06-15 00:00:00

abstract：:Personality may influence the risk of death, but the evidence remains inconsistent. We examined associations between personality traits of the five-factor model (extraversion, neuroticism, agreeableness, conscientiousness, and openness to experience) and the risk of death from all causes through individual-participant...

journal_title：American journal of epidemiology

authors： Jokela M,Batty GD,Nyberg ST,Virtanen M,Nabi H,Singh-Manoux A,Kivimäki M

更新日期：2013-09-01 00:00:00

abstract：:The authors modeled the possible consequences for US cataract incidence of increases in ultraviolet B radiation due to ozone depletion. Data on the dose-response relation between ocular exposure to ultraviolet B radiation and cortical cataract were derived from a population-based study (the Salisbury Eye Evaluation Pr...

journal_title：American journal of epidemiology

authors： West SK,Longstreth JD,Munoz BE,Pitcher HM,Duncan DD

更新日期：2005-12-01 00:00:00

abstract：:The isolation of chlamydial trachomatis in sera of patients with gon ococcal urethritis (GU), non-gonococcal urethritis (NGU), post-gonococca l urethritis (PGU) and trachomainclusion conjunctivitis (TRIC) is discussed. Chlamydiae were isolated in 40% of men with NGU, 20-30% with GU and 0-7% of men with symptomatic or...

journal_title：American journal of epidemiology

authors： Richmond SJ,Sparling PF

更新日期：1976-05-01 00:00:00