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| PM(10) OZONE, AND HOSPITAL ADMISSIONS FOR THE ELDERLY IN MINNEAPOLIS ST-PAUL, MINNESOTA |
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| Author(s): SCHWARTZ J |
| Source: ARCHIVES OF ENVIRONMENTAL HEALTH Volume: 49 Issue: 5 Pages: 366-374 Published: SEP-OCT 1994 |
| Times Cited: 102 References: 48 |
| Abstract: Several recent studies have reported associations between airborne particles and/or ozone and hospital admissions for respiratory disease. PM(10) has rarely been used as the particle exposure measure, however. This study examined whether such an association could be seen in Minneapolis-St. Paul, Minnesota, which has daily monitoring data for PM(10). Data on hospital admissions in persons aged 65 y and older were obtained from Medicare records for the years 1986 through 1989. Daily counts of admissions, by admit date, were computed for pneumonia (ICD9 480-487) and chronic obstructive pulmonary disease (COPD) (ICD9 490-496). Classification was by discharge diagnosis. Daily air pollution data from all monitoring stations for ozone and PM(10) in Minneapolis-St. Paul were obtained, and the daily average for each pollutant was computed. An average of approximately six pneumonia admissions and two admissions for chronic obstructive pulmonary disease occurred each day. Poisson regression analysis was used to control for time trends, seasonal fluctuations, and weather. PM(10) was a risk factor for pneumonia admissions (relative risk [RR] = 1.17, 95% confidence interval [CI] = 1.33-1.02) and COPD admissions (RR = 1.57, 95% CI = 2.06-1.20). Ozone was also associated with pneumonia admissions (RR = 1.15, 95% CI = 1.36-0.97). The relative risks are for an increase of 100 mu g/m(3) in daily PM(10) and 50 ppb in daily ozone concentration. Several alternative methods for controlling for seasonal patterns and weather were used, including nonparametric regression techniques. The results were not sensitive to the methods. When days exceeding the National Ambient Air Quality Standard for either pollutant were excluded, the association remained for both pneumonia (RR = 1.18, 95% CI = 1.34-1.03 for PM(10), and RR = 1.18, 95% CI = 1.41-0.99 for ozone) and COPD (RR = 1.54, 95% CI = 2.06-1.16 for PM(10)). |
| Document Type: Article |
| Language: English |
| Reprint Address: SCHWARTZ, J (reprint author), HARVARD UNIV, SCH PUBL HLTH, ENVIRONM EPIDEMIOL PROGRAM, 665 HUNTINGTON AVE, BOSTON, MA 02115 USA |
| Publisher: HELDREF PUBLICATIONS, 1319 EIGHTEENTH ST NW, WASHINGTON, DC 20036-1802 |
| Subject Category: Environmental Sciences; Public, Environmental & Occupational Health |
| IDS Number: PM188 |
| ISSN: 0003-9896 |
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