Table 2

Crude and adjusted HRs of stroke for those with RA and comorbid depression, those with RA only and those with depression only as compared with those with neither RA nor depression.

Patient groupEventPYIncidenceCrude HRs
(95% CI)
Adjusted HRs*
(95% CI)
Non-RA cohort
 Neither RA nor depression (n=29 925)3063245086.8112.501.001.00
 Depression only (n=2675)37724540.3215.361.23 (1.11 to 1.37)1.57 (1.41 to 1.75)
RA cohort
 RA only (n=6909)92955223.8316.821.35 (1.25 to 1.45)1.43 (1.12 to 1.55)
 RA and depression (n=1136)1819901.3118.281.48 (1.26 to 1.71)2.18 (1.87 to 2.54)
  • *Adjusted for age, gender, level of urbanisation, income, visits seeking medical care and comorbidity.

  • PY, per 1000 person-years for incidence rate; RA, rheumatoid arthritis.