Chronic conditions account for rise in Medicare spending from 1987 to 2006 (Publications)
Medicare beneficiaries' medical needs, and where beneficiaries undergo treatment, have changed dramatically over the past two decades. Twenty years ago, most spending growth was linked to intensive in
Chronic exposure to ambient ozone and lung function in young adults (Publications)
BACKGROUND: Tropospheric ozone (O3) is an oxidant, outdoor air pollutant. Chronic exposure has been associated with decreased lung function in children and adolescents. This study investigated the eff