This volume hopes to fill a growing need for the description of current methodology in public
health surveillance. Recent advances in syndromic surveillance and, more generally, in …

Purpose : We estimated the incidence of erectile dysfunction in men 40 to 69 years old at
study entry during an average 8.8-year followup, and determined how risk varied with age, …

The efficacy of the Good Behavior Game was examined in a multiethnic New York City public
high school. Classroom rules were posted and students were divided into two teams. A …

Background Both targeted decolonization and universal decolonization of patients in intensive
care units (ICUs) are candidate strategies to prevent health care–associated infections, …

Missing data are a recurring problem that can cause bias or lead to inefficient analyses.
Statistical methods to address missingness have been actively pursued in recent years, …

Background & Aims: Previous US studies of inflammatory bowel disease (IBD) prevalence
have sampled small, geographically restricted populations and may not be generalizable to …

Background Fully understanding the determinants and sequelae of fetal growth requires a
continuous measure of birth weight adjusted for gestational age. Published United States …

OBJECTIVE: The purpose of this study was to examine the associations of gestational weight
gain with child adiposity. STUDY DESIGN: Using multivariable regression, we studied …

Background:Vitamin D deficiency and asthma are common at higher latitudes. Although
vitamin D has important immunologic effects, its relation with asthma is unknown. Objective:We …

Background. Erectile dysfunction (ED), a wide spread and troublesome condition among
middle-aged men, is partly vascular in origin. In the Massachusetts Male Aging Study, a random…