Table 5.
Effects of different PM10 exposure metrics and lags on respiratory mortality, for a 10 µg/m3 increase in PM10 (95% confidence intervals)
| Percent change in risk of mortality per 10µg/m3 increase in the PM10 metric | |||||
|---|---|---|---|---|---|
| 24-hour exposure | Daytime (7am–8pm) |
Morning (7am–10am) |
Nighttime (8pm–7am) |
1-hour maximum | |
| Lag0 | 0.04 (−0.29, 0.37) | 0.04 (−0.28, 0.35) | 0.09 (−0.20, 0.38) | 0.04 (−0.27, 0.36) | −0.04 (−0.30, 0.23) |
| Lag1 | 0.06 (−0.26, 0.39) | 0.02 (−0.29, 0.34) | −0.03 (−0.32, 0.26) | 0.10 (−0.21, 0.41) | 0.10 (−0.15, 0.36) |
| Lag2 | 0.16 (−0.15, 0.48) | 0.15 (−0.15, 0.45) | 0.15 (−0.14, 0.43) | 0.16 (−0.14, 0.46) | 0.08 (−0.17, 0.34) |
| Lag3 | 0.14 (−0.17, 0.45) | 0.14 (−0.16, 0.45) | 0.20 (−0.08, 0.48) | 0.12 (−0.18, 0.42) | 0.09 (−0.16, 0.34) |
| Lag01 | 0.07 (−0.31, 0.46) | 0.04 (−0.34, 0.43) | 0.05 (−0.31, 0.40) | 0.10 (−0.26, 0.46) | 0.05 (−0.26, 0.35) |
| Lag02 | 0.17 (−0.27, 0.61) | 0.14 (−0.30, 0.59) | 0.15 (−0.27, 0.56) | 0.19 (−0.23, 0.60) | 0.09 (−0.26, 0.44) |
| Lag03 | 0.24 (−0.24, 0.73) | 0.23 (−0.26, 0.73) | 0.27 (−0.19, 0.74) | 0.25 (−0.22, 0.71) | 0.14 (−0.25, 0.54) |
Note: For each exposure, the most certain effect is shown in bold font. The effect estimates shown in this table are for a 10µg/m3 increase for all exposure metrics; however, a 10µg/m3 increase is not equivalent across all exposure metrics. For example, a 10µg/m3 increase in the 24-hour exposure corresponds to approximately a 15µg/m3 increase in the daily 1-hour maximum.