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Cheryl Alexander, 1945-2006, obituary

A commentary by researchers from the Johns ÎÚÑ»´«Ã½ suggests that analytic research data should be made available so that reproducibility of epidemiologic studies can be the new minimum standard for which investigators strive.

Q&A: Researchers from the Johns ÎÚÑ»´«Ã½ today published a study in the Journal of the American Medical Association relating hospital admissions with fine particulate matter levels. In a study of 204 U.S. urban counties, for every 10 µg/m3 increase in particulate matter, the researchers calculated 11,000 additional cardiovascular and respiratory disease hospitalizations among the Medicare participants who participated in the study.

Short-term exposure to fine particulate matter—the microscopic particles that pollute the air—increased hospital admissions for cardiovascular and respiratory disease among Medicare participants.