Table 3.

Odds Ratios and 95% Confidence Intervals from Exact Logistic Regression and Heckman Analysis of Association Between Total and Domain-Specific Physical Activity (Hours/Week) at 3 Months Postpartum and Depressive Symptoms at 12 Months Postpartum Among Women Enrolled in Pregnancy, Infection, and Nutrition Postpartum Study (n=528)

		Crude model		Final adjusted model		Heckman selection modela
	n	OR	95% CI	OR	95% CI	OR	95% CI
Total MVPA (hours/week)b
None	168	1.00	–	1.00	–	1.00	–
Any	360	1.15	0.50-2.89	2.00	0.71-6.75	1.39	0.86-2.28
Work MVPA (hours/week)c
None	476	1.00	–	1.00	–	1.00	–
Any	52	1.87	0.52-5.47	1.95	0.46-7.13	1.73	1.01-2.97
Recreational MVPA (hours/week)d
None	272	1.00	–	1.00	–	1.00	–
Any	256	0.76	0.33-1.67	1.19	0.44-3.14	1.39	0.89-2.17
Adult and child care MVPA (hours/week)e
None	392	1.00	–	1.00	–	1.00	–
Any	136	2.18	0.94-5.64	2.66	1.03-8.11	1.42	0.91-2.22
Indoor household MVPA (hours/week)f
None	430	1.00	–	1.00	–	1.00	–
Any	98	2.18	0.89-5.77	2.72	0.96-10.18	1.36	0.86-8.04
Outdoor household MVPA (hours/week)g
None	494	1.00	–	1.00	–	1.00	–
Any	34	1.01	0.11-4.57	0.91	0.08-4.66	0.89	0.32-2.45

^aHeckman selection model includes data on 470 total observations due to missing data on pregnancy depressive symptoms.

^bAdjusted for depressive symptoms at 3 months postpartum, smoking, age, partner support.

^cAdjusted for depressive symptoms at 3 months postpartum, marital status, sleep quality.

^dAdjusted for depressive symptoms at 3 months postpartum, age, partner support, sleep quality.

^eAdjusted for depressive symptoms at 3 months postpartum, sleep quality.

^fAdjusted for depressive symptoms at 3 months postpartum, sleep quality.

^gAdjusted for depressive symptoms at 3 months postpartum, smoking.

CI, confidence interval; OR, odds ratio.