Table 2.

Comparison of the risk of developing depression in stroke survivors and matched control group.

	N	IR (per 1000 PYs)	HR (95% CI)
			Unadjusted	Adjusted (Model 1)	Adjusted (Model 2)
Comparison between stroke survivors and control group
Control	294,506	34.40	1 (ref.)	1 (ref.)	1 (ref.)
Stroke survivors	207,678	98.05	2.69 (2.66–2.73)	2.21 (2.18–2.24)	2.12 (2.09–2.15)
Comparison between stroke survivors with, and without disability, and control group
Control	294,506	34.40	1 (ref.)	1 (ref.)	1 (ref.)
No disability after stroke	185,183	93.28	2.57 (2.54–2.60)	2.13 (2.10–2.16)	2.04 (2.02–2.07)
Disability after stroke	22,495	138.95	3.77 (3.69–3.85)	2.87 (2.80–2.93)	2.74 (2.68–2.81)
Comparison between stroke survivors without disability, with disability by the severity degrees, and control group
Control	294,506	34.40	1 (ref.)	1 (ref.)	1 (ref.)
No disability after stroke	185,183	93.29	2.57 (2.54–2.60)	2.13 (2.11–2.16)	2.05 (2.02–2.07)
Mild disability after stroke	14,705	123.69	3.39 (3.30–3.48)	2.57 (2.50–2.65)	2.46 (2.39–2.53)
Severe disability after stroke	7790	173.91	4.60 (4.45–4.75)	3.53 (3.41–3.65)	3.39 (3.28–3.51)

Model 1: Mutually adjusted for age, sex, CCI; Model 2: Age, sex, CCI, place, income, DM, HTN, dyslipidemia, smoking, alcohol consumption, exercise. Abbreviations: IR, incidence rate; HR, hazard ratio; CI, confidence interval; CCI, Charlson Comorbidity Index; DM, diabetes mellitus; HTN, hypertension; PYs, person-years.