Whitney R. Robinson

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Adult obesity has shown little association with prostate cancer risk, but obesity at younger ages may be associated with reduced risk. In 1997-2000, the relation between obesity before age 30 years and incident advanced prostate cancer was investigated in a population-based case-control study of African-American and White men (568 cases, 544 controls) in(More)
We consider several possible interpretations of the "effect of race" when regressions are run with race as an exposure variable, controlling also for various confounding and mediating variables. When adjustment is made for socioeconomic status early in a person's life, we discuss under what contexts the regression coefficients for race can be interpreted as(More)
BACKGROUND Abdominal obesity predicts a wide range of adverse health outcomes. Over the past several decades, prevalence of abdominal obesity has increased markedly in industrialized countries like the United States No previous analyses, however, have evaluated whether there are birth cohort effects for abdominal obesity. Estimating cohort effects is(More)
Analysts often use different conceptual definitions of a cohort effect, and therefore different statistical methods, which lead to differing empirical results. A definition often used in sociology assumes that cohorts have unique characteristics confounded by age and period effects, whereas epidemiologists often conceive that period and age effects interact(More)
BACKGROUND In the United States, black women are at much greater risk of obesity than are black men. Little is known about the factors underlying this disparity. OBJECTIVE We explored whether childhood sociodemographic factors (parental education, single-mother household, number of siblings, number of minors in household, birth order, and female(More)
Body size relatively early in life may influence men’s later rate of prostate cancer. We searched for published, English-language studies of the association between prostate cancer incidence or mortality and body size between ages 5 and 29 years. We summarized analyses of childhood body size, early-adult waist circumference, and early-adult body mass index(More)
OBJECTIVES Since the 1980s, older, low-educated White women experienced an unprecedented decrease in life expectancy. We investigated whether a similar phenomenon was evident among younger women for obesity. METHODS Using the National Health and Nutrition Examination Survey, age-adjusted changes were estimated in the prevalence of overall and abdominal(More)
It is believed that greater adiposity is associated with reduced risk of breast cancer in premenopausal but increased risk in postmenopausal women. However, few studies have evaluated these relationships among Black women or examined anthropometric measures other than near-diagnosis body mass index (BMI). This study investigated associations between(More)