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Table 2 Incidence rates per 1000 person year (PY) for knee, hip and hand osteoarthritis between patients with and without PCOS

From: Accelerated osteoarthritis in women with polycystic ovary syndrome: a prospective nationwide registry-based cohort study

  PCOS Controls Unadjusted HRa (95% CI) p value
  No. of events Incidence rate per 1,000 PY (95%CI) No. of events Incidence rate per 1000 PY (95% CI)
Knee osteoarthritis 588 2.8 (2.5; 3.0) 951 1.5 (1.4; 1.6) 1.9 (1.7;2.1) < 0.001
Hip osteoarthritis 173 0.8 (0.7; 0.9) 390 0.6 (0.6; 0.7) 1.3 (1.1; 1.6) 0.004
Hand osteoarthritis 55 0.3 (0.2; 0.3) 96 0.1 (0.1; 0.2) 1.8 (1.3; 2.4) 0.001
  1. aReference = control group
  2. PCOS polycystic ovary syndrome, HR hazard ratio