Webber, Mayris P. Arch Pediatrics Adolescent Medicine Volume 157, February 2003. This study compared information about students at six inner-city elementary schools in the Bronx. Four of the schools had school-based health centers while two did not. Researchers looked at data regarding hospitalization, emergency department visit, and absenteeism among students with asthma. They found that access to school-based health centers reduced the rate of hospitalization and decreased absenteeism for students with asthma.