Table 4.
The cumulative relative risks of adverse pregnancy outcomes in intensified thermal stress of UTCI
| Lag 0 | Lag 0–2 | Lag 0–6 | Lag 0–13 | Lag 0–21 | |
|---|---|---|---|---|---|
| Hot effect (UTCI)a | |||||
| Stillbirth | 1.591 (0.957–2.647) | 1.087 (0.636–1.858) | 1.513 (0.825–2.773) | 2.049 (1.012–4.151) | 2.336 (0.853–6.400) |
| LBW | 0.892 (0.378–2.108) | 0.769 (0.335–1.766) | 1.369 (0.538–3.485) | 1.074 (0.355–3.253) | 0.464 (0.097–2.218) |
| PTL | 0.902 (0.672–1.211) | 0.897 (0.650–1.238) | 0.907 (0.626–1.313) | 0.972 (0.613–1.542) | 1.376 (0.711–2.665) |
| SA | 1.231 (0.859–1.766) | 0.973 (0.673–1.409) | 0.887 (0.586–1.343) | 0.932 (0.573–1.516) | 0.895 (0.443–1.809) |
| Pre-eclampsia | 1.087 (0.759–1.558) | 0.965 (0.665–1.402) | 1.064 (0.701–1.615) | 1.219 (0.742–2.005) | 1.524 (0.754–3.081) |
| Gestational hypertension | 0.979 (0.657–1.456) | 0.893 (0.600–1.331) | 0.731 (0.466–1.145) | 0.585 (0.342–1.002) | 0.640 (0.301–1.360) |
| Cold effect (UTCI)b | |||||
| Stillbirth | 0.973 (0.684–1.382) | 0.851 (0.615–1.176) | 0.761 (0.509–1.138) | 0.778 (0.449–1.347) | 0.724 (0.334–1.567) |
| LBW | 0.812 (0.437–1.510) | 0.965 (0.557–1.671) | 0.659 (0.327–1.325) | 0.529 (0.195–1.432) | 0.448 (0.119–1.692) |
| PTL | 1.064 (0.868–1.303) | 1.014 (0.845–1.218) | 1.229 (0.974–1.550) | 1.422 (1.008–2.006) | 1.475 (0.914–2.380) |
| SA | 0.968 (0.776–1.207) | 1.022 (0.836–1.249) | 0.983 (0.765–1.264) | 1.112 (0.789–1.568) | 1.260 (0.778–2.039) |
| Pre-eclampsia | 1.118 (0.889–1.406) | 1.1050 (0.900–1.357) | 1.187 (0.923–1.526) | 1.248 (0.872–1.788) | 0.959 (0.569–1.616) |
| Gestational hypertension | 0.840 (0.660–1.068) | 0.943 (0.755–1.177) | 0.848 (0.639–1.124) | 0.981 (0.663–1.453) | 0.932 (0.532–1.634) |
Statistically significant values are given in bold
aThe cumulative effects of hot thermal stress on adverse pregnancy outcomes, with 99th percentile of UTCI (46.4 °C) relative to 75th percentile of UTCI (38.0 °C)
bThe cumulative effects of cold thermal stress on adverse pregnancy outcomes, with 1st percentile of UTCI (11.6 °C) relative to 25th percentile of UTCI (19.8 °C)