Table 3.

Adjusted risk factors for incident major depressive disorder during the 10-year follow up stratified by sex.

	Men n = 1136		Women n = 1607
Characteristics	RR, 95% CI	p value	RR, 95% CI	p value
Age categories, years
45–54	Reference		Reference
55–64	0.53 (0.23–1.21)	0.130	0.62 (0.38–0.99)	0.048
⩾65	0.46 (0.15–1.39)	0.170	0.33 (0.17–0.62)	0.001
Household income, CAD
<$15,000	Reference		Reference
$15,000–$29,999	0.38 (0.16–0.94)	0.037	N/A	N/A
$30,000–$49,999	0.26(0.089–0.76)	0.013	N/A	N/A
$50,000–$79,999	0.34 (0.13–0.90)	0.030	N/A	N/A
⩾$80,000	0.21(0.006–0.45)	<0.001	N/A	N/A
High blood pressure
No	Reference		Reference
Yes	N/A	N/A	1.61 (1.00–2.62)	0.052
Type of smoker
Abstainer/never smoke	Reference		Reference
Daily smoker	N/A	N/A	1.82 (1.16–2.86)	0.010
Self-reported BMI
Normal weight	Reference		Reference
Underweight	9.09 (1.95–42.5)	0.005	2.92 (1.09–7.84)	0.033
Overweight	1.61 (0.66–3.91)	0.294	0.84 (0.52–1.35)	0.471
Obese	1.35 (0.43–4.22)	0.601	0.96 (0.54–1.71)	0.888
Family stress
No	Reference		Reference
Yes	1.82 (0.85–3.90)	0.124	1.47 (0.96–2.27)	0.079
Chronic disease
Without	Reference		Reference
With	2.14 (0.78–5.89)	0.141	2.45 (1.33–4.51)	0.004
Heart disease
No	Reference		Reference
Yes	3.29 (1.34–8.07)	0.009	1.94 (1.02–3.69)	0.044

Notes: Bold RR represents shared risk factors of depression by men and women.

BMI, body mass index; CI, confidence interval; RR, relative risk.