Fig. 1: Estimated treatment effect of Hurricane Irene exposure on birth outcomes plotted across rainfall intensity at pregnant women’s residential addresses.
From: Associations of hurricane exposure and forecasting with impaired birth outcomes
The treatment effects measured for a variety of birth outcomes including: a birth weight (g), b gestation length (weeks), c binary (0,1) incidence of low birth weight <2500 g outcomes, d binary (0,1) incidence of very low birth weight <1500 g outcomes, e preterm birth (<37 weeks), and f extremely preterm birth (<34 weeks). Treatment effects were estimated against a baseline of births from the same zip code that occurred with expected delivery dates within the 5 years leading up to the Hurricane Irene’s disaster declaration date of August 25, 2011. Rainfall at residential address was used as an indicator of exposure intensity represented by the 1-day maximum rainfall from August 14, 2011 to September 4, 2011, which encompassed the hurricane event’s impact on North Carolina. Estimated treatment effects were overlayed with a cumulative distribution of wind speed exposures. Rainfall source: Parameter-elevation Regressions on Independent Slopes Model (PRISM) climate group Time Series Values for Individual Locations. Source data are provided as a Source Data file.
