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Table 2 Comparison of variables according to FIHOA

From: Functional index for hand osteoarthritis (FIHOA) is associated with pain, muscle strength, and EQ-5D in hand osteoarthritis

  FIHOA ≤4 (n = 49) FIHOA > 4 (n = 46) p values
Age (year) 61.0 (54.6–67.5) 59.0 (54.0–63.3) 0.367
Sex, female (n, %) 46 (93.9) 44 (95.7) 0.530
Symptom duration (month) 24.0 (1.0–96.0) 4.0 (1.0–30.0) 0.120
BMI (kg/m2) 23.4 (21.3–24.0) 23.8 (21.5–25.9) 0.295
SBP (mmHg) 126.0 (114.0–135.0) 127.5 (119.5–135.5) 0.690
DBP (mmHg) 74.0 (69.0–80.0) 75.5 (69.5–80.3) 0.463
ESR (mm/hr) 14.0 (9.0–27.3) 14.0 (8.0–20.5) 0.376
CRP (mg/L) 0.6 (0.6–0.8) 0.6 (0.6–1.3) 0.295
Grip strength
 Meana 23.0 (19.3–25.0) 18.0 (13.9–22.3) < 0.001
 Right 22.0 (18.0–27.5) 18.0 (14.0–22.5) 0.004
 Left 23.0 (10.0–26.0) 17.5 (12.8–23.0) < 0.001
Pinch strength
 Meana 6.3 (5.3–7.1) 5.4 (4.0–6.4) < 0.001
 Right 6.3 (5.1–7.3) 5.5 (3.5–6.5) 0.001
 Left 6.0 (5.0–7.0) 5.5 (3.9–6.0) 0.002
VAS pain 22.0 (10.0–36.5) 48.5 (34.0–71.0) < 0.001
EQ-5D index 0.87 (0.82–0.91) 0.82 (0.7–0.86) < 0.001
EQ-VAS 70.0 (57.5–80.0) 50.0 (49.5–70.0) < 0.001
Total radiographic severity scoresb 6.0 (2.5–21.0) 8.5 (2.0–17.3) 1.000
Number of affected jointsb 5.0 (2.0–12.0) 5.5 (2.0–9.0) 0.917
  1. Data were described as median (Interquartile range) or number (%)
  2. Abbreviation: BMI body mass index; SBP systolic blood pressure; DBP diastolic blood pressure; ESR erythrocyte sedimentation rate; CRP C-reactive protein; VAS visual analogue scale; FIHOA Functional Index for Hand Osteoarthritis; EQ-5D EuroQol-5 dimensio
  3. aAverage value of the sum of right and left hand scores
  4. bBased on Kellgren-Lawrence grade