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Table 2 Patients characteristics. Values are number (percentage) unless otherwise indicated

From: Anti-rheumatic treatment and prosthetic joint infection: an observational study in 494 elective hip and knee arthroplasties

All 494
Female 377 (76.3)
TKA1 254 (51.4)
THA2 240 (48.6)
Age, by time of surgery, mean (range) 62.4 (18–89)
ASA3, valid no 451
 ASA 1 9 (2)
 ASA 2 268 (59.4)
 ASA 3 172 (38.1)
 ASA 4 2 (0.4)
 BMI4, kg/m2, valid no 474,
mean (range)
26.5 (14.9–44.6)
Diagnosis
 Rheumatoid arthritisa 341 (69)
 Psoriatic arthritis 35 (7)
 Spondyloarthritis incl. Ankylosing spondylitisb 29 (5.9)
 Juvenile idiopathic arthritisc 59 (11.9)
 Other diagnosisd 30 (6.1)
  1. 1Total knee-arthroplasty, 2Total hip-arthroplasty, 3American Society of Anesthesiologists (ASA) Physical Status, 4Body mass index
  2. aSeropositive rheumatoid arthritis (n = 283), seronegative rheumatoid arthritis (n = 58)
  3. bAnkylosing spondylitis (n = 21), other specified inflammatory spondylopathies (n = 6), inflammatory spondylopathy, unspecified (n = 2)
  4. cjuvenile arthritis (n = 40), juvenile arthritis with systemic onset (n = 7), juvenile polyarthritis (seronegative) (n = 6), juvenile arthritis, unspecified (n = 4), pauciarticular juvenile rheumatoid arthritis (n = 2)
  5. dInflammatory polyarthropathy (n = 1), polyarthritis, unspecified (n = 4), other specified arthritis (n = 4), monoarthritis, not elsewhere classified (n = 2), systemic lupus erythematosus, unspecified (n = 5), systemic lupus erythematosus with organ or system involvement (n = 3), adult-onset Still disease (n = 2), Crohn’s disease (n = 1), ulcerative colitis (n = 1), polymyositis (n = 1), systemic sclerosis (n = 2), other overlap syndrome (n = 1), arthritis unspecified (n = 1), systemic involvement of connective tissue, unspecified (n = 2)