Table 2 Odds ratios for depression two years later by total frequency of exercise and pattern of exercise.

	N	Crude		Model 1		Model 2
	N	OR	95% CI	OR	95% CI	OR	95% CI
Total frequency of exercise
Non-exercisers	364	ref	—	ref	—	ref	—
<2/wk	308	1.12	0.71–1.76	1.09	0.70–1.72	1.15	0.72–1.85
2+/wk	750	0.50	0.32–0.76	0.50	0.32–0.76	0.52	0.33–0.81
Pattern of exercise
Non-Exercisers	364	ref	—	ref	—	ref	—
Ea-only	415	0.93	0.60–1.43	0.91	0.59–1.40	0.97	0.61–1.52
Ewo	643	0.51	0.33–0.79	0.51	0.33–0.79	0.53	0.34–0.84
Total frequency of exercise/Pattern of exercise categories
Non-Exercisers	364	ref	—	ref	—	ref	—
Ea-only (<2/wk)	145	1.41	0.82–2.41	1.37	0.80–2.34	1.39	0.79–2.42
Ewo (<2/wk)	163	0.88	0.49–1.57	0.86	0.48–1.55	0.94	0.51–1.71
Ea-only (2+/wk)	270	0.69	0.41–1.17	0.68	0.40–1.15	0.74	0.43–1.26
Ewo (2+/wk)	480	0.39	0.23–0.65	0.39	0.24–0.65	0.40	0.24–0.68

Model 1 was adjusted for sex, age.
Model 2 was adjusted for the covariates in Model 1 plus living area, annual equivalized income, educational attainment, household composition, work status, body mass index, self-reported medical conditions, drinking, smoking, emotional support.

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