. 2023 Jul 7;5(3):100383. doi: 10.1016/j.ocarto.2023.100383

Table 1.

Participant characteristics.

	Total n = 231	KL-score^b = 0 n = 104	KL-score^b = 1 n = 70	KL-score^b ≥2 n = 57
Age (years) median (IQR)	52.53 (17.46)	48.07 (21.37)	54.55 (19.24)	55.87 (13.78)
Sex (female)^a	125 (54.1%)	67 (65.7%)	31 (44.3%)	27 (48.2%)
BMI^b (kg/m²) median (IQR)^a	27.74 (7.05)	27.58 (6.80)	27.38 (7.05)	28.46 (7.71)
Bilateral radiographs	68 (29.4%)	30 (28.8%)	26 (37.1%)	12 (21.1%)
Referrer^a
- General practitioner	133 (57.6%)	64 (61.5%)	36 (52.2%)	33 (57.8%)
- Orthopaedic surgeon	72 (31.2%)	32 (30.8%)	22 (31.9%)	18 (31.6%)
- Surgeon	6 (2.6%)	2 (1.9%)	2 (2.9%)	2 (3.5%)
- Rheumatologist/Internist	19 (8.2%)	6 (5.8%)	9 (13.0%)	4 (7.0%)
Post-traumatic complaints	148 (64.1%)	65 (62.5%)	42 (60.0%)	41 (71.9%)
Predominant symptoms^a^,^c
- Pain	189 (81.8%)	86 (92.5%)	60 (89.6%)	43 (84.3%)
- Feeling of instability	59 (25.5%)	27 (29.0%)	21 (31.3%)	11 (21.6%)
- Loss of function	42 (18.2%)	13 (14.0%)	14 (20.9%)	15 (29.4%)
- Stiffness	94 (40.7%)	38 (40.9%)	31 (46.3%)	25 (49.0%)
Pain (NRS^b-11) median (IQR)
- In rest^a	3.00 (4.00)	4.00 (5.00)	3.00 (4.00)	3.00 (3.00)
- During activity^a	7.00 (2.00)	7.00 (2.00)	7.00 (3.00)	7.00 (3.00)
Ankle Osteoarthritis Scale median (IQR)
- pain (0–100)^a	45.53 (26.04)	49.39 (24.10)	40.79 (22.91)	43.36 (21.95)
- disability (0–100)^a	41.26 (37.53)	47.49 (42.53)	34.13 (28.59)	44.17 (43.50)

Missing data: n = 3 (1.3%) for sex, n = 6 (2.6%) for BMI, n = 1 (0.4%) for referrer, n = 20 (8.7%) for predominant symptoms, n = 9 (3.9%) for pain in rest, n = 11 (4.8%) for pain during activity, n = 42 (18.2%) for ankle osteoarthritis scale – pain (n = 18, n = 10, n = 14 for KL-score 0, 1 and ≥ 2, respectively), n = 53 (22.9%) for ankle osteoarthritis scale – disability (n = 24, n = 15, n = 14 for KL-score 0, 1 and ≥ 2, respectively).

KL, Kellgren & Lawrence; BMI, body mass index; NRS, numeric rating scale.

Symptoms add up over 100%.