Table 4 Association of RA with depression stratified by sex, age, and follow-up years.

From: Bidirectional associations between rheumatoid arthritis and depression: a nationwide longitudinal study

Variables Non-depression cohort Depression cohort HR (95% CI)
Case PYs Incidence Case PYs Incidence Crude Adjusted
All 837 692396.22 1.21 718 347046.11 2.07 1.71 (1.55–1.89) 1.65 * (1.41–1.77)
Sex
 Female 664 416464.90 1.59 560 209084.69 2.68 1.68 (1.50–1.88) 1.55 ξ (1.34–1.74)
 <=40 90 144727.65 0.62 98 72211.49 1.36 2.18 (1.64–2.91) 1.95 Υ (1.37–2.48)
 41–60 317 169788.73 1.87 299 84961.55 3.51 1.89 (1.61–2.21) 1.62 Υ (1.38–1.93)
 60+ 257 101948.51 2.52 163 51911.65 3.14 1.24 (1.02–1.51) 1.19 Υ (0.98–1.47)
 Male 173 275931.32 0.63 158 137961.42 1.15 1.83 (1.47–2.26) 1.61 ξ (1.28–2.02)
 <=40 20 94640.07 0.21 25 47264.23 0.52 2.50 (1.39–4.51) 2.04 Υ (1.09–3.86)
 41–60 71 101874.80 0.70 67 50937.94 1.32 1.89 (1.35–2.64) 1.61 Υ (1.13–2.28)
 60+ 82 79416.45 1.03 66 39759.25 1.66 1.60 (1.16–2.21) 1.40 Υ (0.99–1.96)
Follow-up (years)
2 245 9526.52 25.72 204 4892.39 41.69 1.62 (1.35–1.96) 1.47 * (1.14–1.76)
 3–5 156 49293.82 3.16 153 25200.05 6.07 1.94 (1.54–2.40) 1.83 * (1.61–2.19)
 >5 436 633575.88 0.68 361 316953.66 1.14 1.66 (1.44–1.91) 1.58 * (1.34–1.79)
  1. Incidence rate is per 1,000 PYs.
  2. ΥModel adjusted for urbanization level, monthly income, and comorbidity
  3. ξModel adjusted for age, urbanization level, monthly income, and comorbidity.
  4. *Model adjusted for age, gender, urbanization level, monthly income, and comorbidity.