Table 4.
Percentage increase (95% CI) in mortality rate per 10-μg/m3 increase in PM2.5 from log-linear regression using MCAPS regional data adjusting for three levels of demographic and socioeconomic variables.
| Age group (years)
|
||||
|---|---|---|---|---|
| U.S. region/adjustment | All | 65–74 | 75–84 | ≥ 85 |
| Eastern | ||||
| Age | 15.5 (13.0 to 18.0) | 31.1 (26.8 to 35.5) | 17.6 (14.9 to 20.4) | −1.4 (−3.5 to 0.8) |
| Age + SES | 10.5 (8.4 to 12.5) | 17.3 (14.6 to 20.0) | 12.4 (10.1 to 14.6) | 1.4 (−0.7 to 3.5) |
| Age + SES + COPD | 6.8 (4.9 to 8.7) | 11.4 (8.8 to 14.1) | 8.9 (6.8 to 11.0) | 1.7 (−0.3 to 3.7) |
| Central | ||||
| Age | 17.8 (13.3 to 22.2) | 39.0 (29.7 to 48.2) | 17.5 (12.7 to 22.2) | −2.1 (−5.9 to 1.6) |
| Age + SES | 8.9 (5.2 to 12.5) | 16.5 (10.9 to 22.1) | 8.8 (4.6 to 13.0) | −0.7 (−4.2 to 2.8) |
| Age + SES + COPD | 13.2 (9.5 to 16.9) | 20.4 (15.0 to 25.8) | 12.0 (7.6 to 16.4) | −0.3 (−4.0 to 3.3) |
| Western | ||||
| Age | 0.3 (−1.9 to 2.5) | 6.0 (2.3 to 9.6) | 0.4 (−2.0 to 2.7) | −5.2 (−7.2 to 3.2) |
| Age + SES | −0.3 (−2.2 to 1.6) | −2.1 (−5.0 to 0.8) | 0.3 (−1.8 to 2.5) | 0.9 (−0.8 to 2.7) |
| Age + SES + COPD | −1.1 (−3.0 to 0.8) | −1.5 (−4.2 to 1.1) | −0.2 (−2.2 to 1.9) | −0.5 (−2.5 to 1.5) |