Table 2.

Associations between tree canopy cover & hypertensive disorders of pregnancy (HDP), n=1,225 *Adjusted for age, prenatal body-mass index, smoking history, parity, history of diabetes, health insurance, last menstrual period seasonality, and deprivation index by census tract)

		no HDP n (%)	HDP n (%)	OR (95% CI) n = 1225	P-Value	Adjusted* OR (95% CI) n= 1225	P-Value
Buffer size	Tree canopy cover
100m	>30%	98 (10.4%)	14 (4.0%)	1 (ref)	-	1 (ref)	-
	20–30%	189 (20.0%)	57 (20.3%)	2.11 (1.12–3.98)	0.047	2.00 (1.02–3.93)	0.05
	10–20%	421 (44.6%)	140 (49.8%)	2.33 (1.29–4.21)	0.057	1.98 (1.05–3.73)	0.04
	<10%	236 (25.0%)	70 (24.9%)	2.08 (1.12–3.86)	0.023	2.14 (1.11–4.16)	0.02