Table 3 Odds ratios for depression after two years by total frequency of exercise and pattern of exercise: sensitivity analysis with ‘non-exerciser’ defined differently.

	N	Crude		Model 1		Model 2
	N	OR	95% CI	OR	95% CI	OR	95% CI
Total frequency of exercise
Non-exercisers*	522	ref	—	ref	—	ref	—
<2/wk	150	0.76	0.43–1.35	0.75	0.42–1.34	0.81	0.45–1.47
2+/wk	750	0.44	0.30–0.65	0.45	0.31–0.66	0.46	0.31–0.69
Pattern of exercise
Non-Exercisers*	522	ref	—	ref	—	ref	—
Ea-only	436	0.71	0.48–1.06	0.70	0.47–1.05	0.77	0.51–1.17
Ewo	464	0.30	0.18–0.50	0.31	0.19–0.51	0.31	0.18–0.52
Total frequency of exercise/Pattern of exercise categories
Non-Exercisers*	522	ref	—	ref	—	ref	—
Ea-only (<2/wk)	109	0.94	0.51–1.73	0.91	0.49–1.68	1.02	0.54–1.93
Ewo (<2/wk)	117	0.28	0.11–0.72	0.30	0.12–0.76	0.30	0.12–0.77
Ea-only (2+/wk)	327	0.64	0.41–1.01	0.64	0.41–1.00	0.69	0.43–1.10
Ewo (2+/wk)	347	0.31	0.18–0.54	0.31	0.18–0.55	0.31	0.17–0.55

^*While people who did not exercise alone or with others were classified as non-exercisers in Table 2, both people who exercised alone three times or less per month and people who exercised with others three times or less per month were classified as non-exercisers in Table 3.
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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