Table 1

ORs predicting fetal death obtained from multivariate logistic regressions, Louisiana, 2004–2007

Control group:(1)
†D <1%
(2)
D <1%
(3)
D <1%
(4)
D <1%
(5)
D <1%
(6)
D<1%
(7)(8)
Experiment group:1% < D <10%1% < D <10%10% < D <50%10% < D <50%D >50%D >50%
OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)
Period (post=1)0.801***0.9220.823***0.857*0.833**0.9220.754***1.084
(0.701 to 0.915)(0.798 to 1.066)(0.711 to 0.954)(0.730 to 1.006)(0.713 to 0.972)(0.777 to 1.091)(0.681 to 0.835)(0.899 to 1.306)
Damage (yes=1)1.0301.179**0.734***0.9400.595***0.469***
(0.902 to 1.177)(1.016 to 1.368)(0.621 to 0.868)(0.778 to 1.137)(0.491 to 0.723)(0.376 to 0.585)
Period Embedded Image damage0.8250.9151.398***1.396**1.796***2.367***
(0.651 to 1.045)(0.708 to 1.181)(1.096 to 1.784)(1.067 to 1.827)(1.323 to 2.438)(1.684 to 3.327)
Damage (10% < D <50%)0.754***0897
(0.681 to 0.835)(0.758 to 1.061)
Damage (D >50%)0.762***0.464***
(0.656 to 0.885)(0.355 to 0.605)
% Damage (post)1.016***1.017***
(1.010 to 1.022)(1.011 to 1.024)
ControlsNoYesNoYesNoYesNoYes
Log likelihood−13 188.808−10 225.978−10 166.588−7878.777−8544.919−6662.346−10 682.338−8251.990
LR, likelihood ratio Embedded Image59.263891.8524.462782.2535.712071.0246.983025.45
Pseudo Embedded Image0.0080.1650.0040.1550.0070.1390.0080.160
N308 947306 326238 043236 101206 085204 266256 529254 212
  • Two sided p Values: ***p<0.01, **p<0.05, *p<0.1.

  • †Similar results obtained when (1) control group set to severe damage<5%, and (2) for models with experimental group defined as 1% < severe damage <5% and control group defined as severe damage <1%. We also conduct estimations that expand the definition of the control group to be any damage less than the lower bound of the category, as well as estimations in which the experimental group is defined as any damage greater than the lower bound of the category and the control group less than the lower bound. The general relationship between hurricane damage exposure and fetal death is upheld in each formulation. As described in the ‘Methods’ section, models with controls adjust for tobacco use, alcohol use, age ≥ 35, Black, Hispanic, congenital defect, placental abruption, excessive bleeding, ruptured membrane, cord prolapsed, diabetes, haemoglobinopathy, chronic hypertension, prior preterm birth, uterine bleeding and year of birth.