Table 3.

Simple and multiple (stepwise) logistic regression analyses of the association (OR, 95% CI) between exposure to high ambient heat and miscarriage/stillbirth, adjusted for maternal age at pregnancy, and total number of pregnancies among 1135 women drawn from all 10 administrative regions of Ghana

	Crude OR (95% CI)	Model 1 OR (95% CI)	Model 2 OR (95% CI)
Ambient heat (Mean WBGT) based on yearly distributions	1.15 (0.92–1.42)	1.12 (0.90–1.39)	1.00 (0.80–1.25)
Ambient heat (Mean WBGT) based on month 2 of pregnancy	1.03 (0.84–1.27)
Maternal age at end of pregnancy		1.07 (1.03–1.12)*	1.08 (1.03–1.12)*
Total number of pregnancies			2.46 (1.89–3.20)*

Model 1: adjusted for maternal age at end of pregnancy. Model 2: adjusted for maternal age at end of pregnancy and total number of pregnancies

OR odds ratio, CI confidence interval

* statistically significant at p <.05