Table 2.

Adjusted shared and unique risk factors for depression and diabetes mellitus during the 10-year follow up (cycle 6).

	Depression n = 2743		Diabetes n = 3040
Characteristics	RR, 95% CI	p value	RR, 95% CI	p value
Sex
Male	Reference		Reference
Female	2.13 (1.40–3.24)	<0.001	N/A	N/A
Age categories, years
45–54	Reference		Reference
55–64	0.65 (0.43–0.98)	0.040	1.66 (1.22–2.28)	0.002
⩾65 above	0.43 (0.24–0.78)	0.005	1.63 (1.16–2.29)	0.005
Household income, CAD
<$15,000	Reference		Reference
$15,000–$29,999	N/A	N/A	0.83 (0.63–1.09)	0.188
$30,000–$49,999	N/A	N/A	0.62 (0.45–0.85)	0.003
$50,000–$79,999	N/A	N/A	0.66 (0.46–0.94)	0.023
⩾$80,000	N/A	N/A	0.76 (0.50–1.16)	0.204
Ethnic background
White	Reference		Reference
Nonwhite	N/A	N/A	1.73 (1.09–2.75)	0.021
High blood pressure
No	Reference		Reference
Yes	1.34 (0.87–2.07)	0.183	1.62 (1.28–2.06)	<0.001
Type of smoker
Abstainer/never smoke	Reference		Reference
Daily smoker	1.72 (1.16–2.56)	0.007	1.36 (1.04–1.77)	0.022
Physical activity
Active	Reference		Reference
Inactive	1.24 (0.85–1.80)	0.275	1.24 (0.99–1.56)	0.066
Self-reported BMI
Normal weight	Reference		Reference
Underweight	3.34 (1.40–7.97)	0.007	0.39 (0.06–2.72)	0.345
Overweight	0.94 (0.63–1.42)	0.772	1.81 (1.36–2.40)	<0.001
Obese	1.01 (0.61–1.69)	0.960	3.24 (2.39–4.41)	<0.001
Family stress
No	Reference		Reference
Yes	1.48 (1.02–2.15)	0.049	N/A	N/A
Traumatic events
No	Reference		Reference
Yes	1.46 (1.00–2.13)	0.001	N/A	N/A
Chronic disease
Without	Reference		Reference
With	2.47 (1.47–4.15)	0.001	N/A	N/A
Heart disease
No	Reference		Reference
Yes	2.21 (1.33–3.69)	0.002	N/A	N/A

Notes: Bold RR represents shared risk factors for both depression and diabetes mellitus.

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