. 2016 Feb 9;6:20647. doi: 10.1038/srep20647

Table 2. Association of depression with RA stratified by sex, age, and follow-up years.

Variables	Non-RA cohort			RA cohort			HR (95% CI)
Variables	Case	PYs	Incidence	Case	PYs	Incidence	Crude	Adjusted
All	1075	120100.95	8.95	958	61075.48	15.69	1.75 (1.60–1.91)	1.69^* (1.51–1.87)
Sex
Female	834	79153.66	10.54	749	40500.41	18.49	1.76 (1.57–1.93)	1.73^ξ (1.50–1.84)
<=40	123	14034.12	8.76	130	6855.65	18.96	2.16 (1.67–2.73)	2.14^Υ (1.62–2.69)
41–60	427	38820.73	10.99	365	19759.52	18.47	1.68 (1.45–1.99)	1.60^Υ (1.35–1.90)
>60	284	26298.81	10.79	254	13885.25	18.29	1.67 (1.42–1.92)	1.58^Υ (1.37–1.82)
Male	241	40947.29	5.89	209	20575.07	10.16	1.72 (1.43–2.06)	1.65^ξ (1.33–1.94)
<=40	28	7405.85	3.78	40	3548.01	11.27	2.97 (1.81–4.77)	2.76^Υ (1.83–4.59)
41–60	90	17265.70	5.21	78	8682.50	8.98	1.72 (1.27–2.33)	1.59^Υ (1.17–2.17)
>60	123	16275.75	7.56	91	8344.56	10.90	1.44 (1.10–1.88)	1.33^Υ (1.01–1.75)
Follow–up (years)
≦ 2	161	2481.50	64.88	195	1328.31	146.77	2.25 (1.71–2.44)	1.98^* (1.43–2.15)
3–5	483	8666.64	55.73	443	5423.28	81.68	1.48 (1.34–1.73)	1.47^* (1.28–1.76)
>5	431	108952.81	3.96	320	54323.89	5.89	1.50 (1.30–1.74)	1.48^* (1.25–1.69)

Incidence rate is per 1,000 PYs.

^ΥModel adjusted for urbanization level, monthly income, and comorbidity.

^ξModel adjusted for age, urbanization level, monthly income, and comorbidity.

^*Model adjusted for age, gender, urbanization level, monthly income, and comorbidity.