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Table 3 Exposure duration, unadjusted rates and adjusted rate ratios (Cox proportional hazard models) of musculoskeletal hospitalizations in 2002–2006 and 2007–2011

From: Hospitalization for musculoskeletal disorders in rheumatoid arthritis patients: a population-based study

  Exposure duration (days) Hospitalization for musculoskeletal conditions
  Total Median (interquartile range) Number (unadjusted rate per 100 patient-yrs) Hazard ratio (95 % CI)
2002–2006     
Anti-TNF 174 128 365.0 (79.0) 39 (8.18) 0.95 (0.60, 1.50)
DMARDs 358 954 365.0 (74.0) 63 (6.41) 0.69 (0.46, 1.02)
Non-user 184 986 349.0 (173.0) 53 (10.46) 1.00 (Reference)
2007–2011     
Anti-TNF 213 189 365.0 (102.0) 40 (6.85) 0.65 (0.37, 1.14)
DMARDs 527 820 635.0 (54.0) 70 (4.84) 0.40 (0.24, 0.66)
Non-user 148 381 349.5 (181.0) 35 (8.61) 1.00 (Reference)
  1. CI confidence interval