U.S. military recruits waived for pathological curvature of the spine: increased risk of discharge from service.

Selective accession waivers for medically disqualifying conditions like spinal curvature are one way the military meets its manpower needs. We evaluated retention patterns during the first 2 years of service of a cohort of military recruits with waivers for pathological curvature of the spine (spinal curvature). Recruits waived for spinal curvature (n = 417), who accessed from 1998 to 2005 were identified and matched with 3 qualified recruits.

Occupational factors and risk of Parkinson's disease: A population-based case-control study.

Background: Parkinson's disease (PD) has been associated with various workplace factors, but the evidence is inconsistent.

Objective: To estimate the risk of PD associated with various jobs and workplace exposures.

Methods: We conducted a population-based, case-control study of 404 incident PD cases and 526 age and sex-matched controls, collecting self-reported work histories including job titles and exposures to various industrial toxicants.

Pesticides and risk of Parkinson disease: a population-based case-control study.

Background: Pesticide exposures are suspected risk factors for Parkinson disease (PD), but epidemiological observations have been inconsistent.

Objective: To investigate associations between pesticide exposures and idiopathic PD.

Design: Population-based case-control study.