Preterm and Early Term Delivery after Heat Waves in Eight US States: A Case-Crossover Study Using the High-Resolution Urban Meteorology for Impacts Data Set (HUMID)

Estimates in our study were not consistent across states or even within states across heat wave metrics, though we note that most results were imprecise as expected based on the relatively infrequency of heat waves, occurring on only 1.3–6.5% of case or control days. In California, which contains half of the study population, there was a positive trend with stronger associations seen for longer duration heat waves.

also in 11,005 other papers