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. 2020 Jun 25;6(2):e001265. doi: 10.1136/rmdopen-2020-001265

Table 1.

Clinical characteristics of the study population

Hand OA group (n = 128) Control group (n = 70)
Age, mean (SD) years 63.7 (12.1) 54.6 (13.3)
Sex, n (%) women 113 (88.3) 53 (75.7)
Body mass index, median (IQR) kg/m2* 24.6 (22.1–28.6) 26.1 (22.1–29.0)
AUSCAN*

  • Pain (range: 0–20)

 8 (5–12) 8 (3–12)

  • Stiffness (range: 0–4)

 2 (1–3) 2 (1–3)

  • Physical function (range: 0–36)

 17 (10–24) 15 (15–25)
FIHOA (range: 0–30)* 7 (3–12) 5 (2–13)
Symptom duration in fingers

  • No response/not applicable

 12 (9.4) 3 (4.3)

  • <6 weeks

 2 (1.6) 7 (10.0)

  • 6 weeks to 6 months

 6 (4.7) 7 (10.0)

  • >6 months

 108 (84.4) 53 (75.7)
Symptom duration in thumb base

  • No response/not applicable

 36 (28.1) 28 (40.0)

  • <6 weeks

 7 (5.5) 3 (4.3)

  • 6 weeks to 6 months

 6 (4.7) 5 (7.1)

  • >6 months

 79 (61.7) 34 (48.6)

*Missing information about body mass index (n = 1), FIHOA (n = 20) and AUSCAN (n = 7) in the hand OA group. Missing information about FIHOA (n = 9) and AUSCAN (n = 1) in the control group.

AUSCAN, Australian/Canadian hand index; FIHOA, Function Index of Hand OA OA, osteoarthritis.