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Table 1 Participant characteristics at baseline (n = 498)

From: Clinical risk factors associated with radiographic osteoarthritis progression among people with knee pain: a longitudinal study

Characteristic Mean (sd)
Age (years) 60 (8)
Female, N (%) 282 (57%)
Mass (kg) 81 (16)
Height (m) 1.68 (0.95)
BMI (kg/m2) 28.7 (5.3)
Waist circumference (cm) 95.1 (13.7)
 Females (% with circumference >88 cm) 90.7 (13.6) (52%)
 Males (% with circumference >102 cm) 101.0 (11.5) (40%)
Symptom duration (years) 2.5 (1.3)
Medial joint space width (mm) 3.8 (1.0)
OA severity (K&L grade), n (%)
 Grade 1 273 (55%)
 Grade 2 202 (41%)
 Grade 3 23 (5%)
Knee alignment (°) 181 (2.4)
Knee pain (WOMAC 0–20) 6.7 (3.6)
Physical function (WOMAC 0–68) 21.8 (12.7)
SF 12 PCS 41.4 (9.6)
SF 12 MCS 48.7 (6.8)
Comorbidity score 3.2 (3.0)
Use of non-steroidal anti-inflammatory drugs, n (%) 140 (28%)
 Aspirin 49
 Meloxicam 34
 Ibuprofen 23
 Diclofenac 17
 Celecoxib 13
 Naproxen 8
 Indomethacin, ketoprofen, or piroxicam 7
  1. Note: More than one drug was used by ten participants
  2. N number, BMI body mass index, OA osteoarthritis, K&L Kellgren and Lawrence, WOMAC Western Ontario and McMaster Universities OA index, SF Short Form, PCS Physical Component Score, MCS Mental Component Score