Table 2.
Relative risk (RR) estimates and 95% confidence intervals for preterm births and mean temperature. All RRs are relative to median value of mean temperature distribution (19.9 °C)
| Model 1 | Model 2 (additionally adjusted for air pollution) | |||||||
|---|---|---|---|---|---|---|---|---|
| P1 | P25 | P75 | P99 | P1 | P25 | P75 | P99 | |
| lag0 | 1.79 (1.58: 2.04) | 1.13 (1.02: 1.25) | 1.26 (1.13: 1.4) | 1.66 (1.43: 1.92) | 1.76 (1.54: 2) | 1.13 (1.02: 1.25) | 1.25 (1.12: 1.4) | 1.6 (1.37: 1.87) |
| lag1 | 1.51 (1.4: 1.64) | 1.09 (1.03: 1.17) | 1.17 (1.09: 1.25) | 1.44 (1.31: 1.58) | 1.49 (1.37: 1.62) | 1.1 (1.03: 1.17) | 1.16 (1.08: 1.24) | 1.39 (1.26: 1.54) |
| lag2 | 1.3 (1.23: 1.37) | 1.06 (1.02: 1.11) | 1.09 (1.04: 1.14) | 1.26 (1.18: 1.34) | 1.28 (1.21: 1.35) | 1.07 (1.02: 1.11) | 1.08 (1.03: 1.13) | 1.22 (1.14: 1.31) |
| lag3 | 1.14 (1.07: 1.21) | 1.04 (0.99: 1.08) | 1.03 (0.98: 1.08) | 1.12 (1.05: 1.2) | 1.12 (1.06: 1.2) | 1.04 (1: 1.09) | 1.02 (0.97: 1.07) | 1.09 (1.01: 1.18) |
| lag4 | 1.03 (0.96: 1.11) | 1.02 (0.96: 1.07) | 0.99 (0.93: 1.05) | 1.03 (0.95: 1.12) | 1.03 (0.95: 1.1) | 1.02 (0.97: 1.08) | 0.97 (0.92: 1.04) | 1 (0.92: 1.1) |
| lag5 | 0.99 (0.92: 1.06) | 1.01 (0.96: 1.07) | 0.97 (0.91: 1.03) | 0.98 (0.9: 1.07) | 0.98 (0.91: 1.05) | 1.01 (0.96: 1.07) | 0.95 (0.9: 1.02) | 0.96 (0.88: 1.05) |
| lag6 | 0.99 (0.94: 1.05) | 1.01 (0.96: 1.06) | 0.97 (0.92: 1.02) | 0.97 (0.9: 1.04) | 0.98 (0.92: 1.04) | 1.01 (0.96: 1.06) | 0.96 (0.91: 1.01) | 0.96 (0.88: 1.03) |
| lag7 | 1.03 (0.98: 1.08) | 1.01 (0.97: 1.06) | 0.98 (0.94: 1.03) | 0.98 (0.92: 1.04) | 1.01 (0.96: 1.07) | 1.01 (0.97: 1.05) | 0.98 (0.93: 1.02) | 0.98 (0.91: 1.05) |
| lag8 | 1.08 (1.01: 1.14) | 1.02 (0.97: 1.07) | 1.00 (0.95: 1.06) | 1.01 (0.94: 1.09) | 1.06 (0.99: 1.13) | 1.01 (0.96: 1.06) | 1.01 (0.96: 1.06) | 1.01 (0.94: 1.09) |
| lag9 | 1.12 (1.04: 1.2) | 1.03 (0.97: 1.09) | 1.03 (0.97: 1.09) | 1.05 (0.96: 1.14) | 1.1 (1.02: 1.19) | 1.01 (0.96: 1.07) | 1.03 (0.97: 1.1) | 1.05 (0.96: 1.15) |
| lag10 | 1.13 (1.05: 1.21) | 1.03 (0.97: 1.08) | 1.05 (0.99: 1.11) | 1.07 (0.98: 1.17) | 1.11 (1.03: 1.2) | 1.01 (0.96: 1.07) | 1.05 (0.99: 1.12) | 1.08 (0.98: 1.18) |
| lag11 | 1.11 (1.04: 1.17) | 1.02 (0.97: 1.07) | 1.06 (1.01: 1.12) | 1.09 (1.01: 1.17) | 1.09 (1.03: 1.16) | 1.01 (0.96: 1.05) | 1.06 (1.01: 1.12) | 1.09 (1.01: 1.17) |
| lag12 | 1.06 (1: 1.12) | 1.01 (0.96: 1.05) | 1.07 (1.02: 1.12) | 1.09 (1.02: 1.17) | 1.05 (0.99: 1.12) | 1 (0.95: 1.04) | 1.07 (1.02: 1.12) | 1.09 (1.01: 1.17) |
| lag13 | 1 (0.91: 1.09) | 0.99 (0.93: 1.06) | 1.08 (1: 1.15) | 1.09 (0.99: 1.2) | 1 (0.91: 1.09) | 0.99 (0.92: 1.05) | 1.06 (0.99: 1.14) | 1.08 (0.97: 1.2) |
| lag14 | 0.93 (0.81: 1.07) | 0.98 (0.88: 1.08) | 1.08 (0.97: 1.2) | 1.09 (0.93: 1.27) | 0.94 (0.81: 1.08) | 0.97 (0.88: 1.08) | 1.06 (0.95: 1.18) | 1.07 (0.91: 1.26) |