Table 1

Demographic and clinical characteristics for the 85 patients in the Oslo hand OA cohort

CharacteristicsValue
Women77 (90.6%)
Age, years68.8 (5.6)
Body mass index, kg/m226.0 (3.6)
ACR criteria hand79 (92.9%)
ACR criteria hip (n=59)8 (13.6%)
ACR criteria knee (n=81)55 (67.9%)
Findings in the 30 joints examined by radiography and clinical examination
Radiographic hand OA* (n=84)82 (97.6%)
Erosive hand OA (n=84)50 (59.5%)
Number of joints with radiographic hand OA (KLG≥2) (0–30)8 (4–15)
Number of tender joints (0–30)9 (5–14)
Findings in the eight interphalangeal joints scanned by MRI
Joints with hand OA (KLG≥2) (0–8)3 (1–5)
Number of tender joints (0–8)4 (2–5)
Measures of pain and physical function
AUSCAN pain (n=83) (0–20)8.6 (4.0)
AUSCAN stiffness (n=84) (0–4)2.1 (0.8)
AUSCAN physical function (0–36)17.3 (7.6)
AIMS-2 hand/finger (0–20)7.1 (4.7)
FIHOA (n=82) (0–30)10.7 (6.2)
Grip strength, kg20.3 (8.8)
  • Data presented as n (%) for dichotomous variables, mean (SD) for continuous demographic variables, patient-reported outcomes and grip strength, and median (interquartile range) for number of affected joints. Achievable ranges are presented in brackets.

  • * One or more joints with Kellgren–Lawrence grade ≥2.

  • One or more radiographic erosive joint (as defined by the OARSI atlas).

  • ACR, American College of Rheumatology; AIMS-2, Arthritis Impact Measurement Scale 2; AUSCAN, Australian/Canadian hand index; FIHOA, Functional Index of hand osteoarthritis; KLG, Kellgren–Lawrence grade; OA, osteoarthritis; OARSI, Osteoarthritis Research Society International.