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Table 1 Descriptive statistics for the whole sample and separately for women (n = 199) and men (n = 81). BMI, VFA and body fat were assessed during the clinical examination, other from the questionnaire

From: Pressure pain thresholds in individuals with knee pain: a cross-sectional study

  Number All
Median (IQR)
Women
Median (IQR)
Men
Median (IQR)
p-value
Age 280 53 (47–58) 54 (47–58) 52 (47–58) 0.824
rKOAa, n (%) 268 65 (24) 45 (24) 20 (25) 0.853
Pain group, n (%)
NCP
CRP
CWP
261 20 (8)
142 (54)
99 (38)
14 (8)
95 (51)
76 (41)
6 (8)
47 (62)
23 (30)
0.252
Numbers of pain sites 261 4 (2–7) 5 (2–7) 3 (1–5) 0.003
Painful kneeb, n (%)
No knee pain*
Right
Left
Both
269 28 (10)
57 (21)
47 (18)
137 (51)
19 (10)
42 (22)
29 (15)
102 (53)
9 (12)
15 (19.5)
18 (23)
35 (45.5)
0.376
Fibromyalgia, n (%) 275 8 (3) 7 (4) 1 (1) 0.309
BMI 277 26 (23–29) 25 (23–29) 27 (25–29) 0.019
VFA, cm2 275 103 (73–145) 108 (73–155) 93 (73–93) 0.034
VFA > 100 cm2, n (%) 275 142 (52) 107 (55) 35 (44) 0.122
Body fat, (%) 275 30 (24–37) 33 (27–39) 23 (19–30) < 0.001
KOOS (worst-best)
Pain
Symptom
ADL
Sport/Rec
QoL
255 75 (61–83)
71 (57–82)
85 (75–94)
45 (25–67)
50 (38–63)
75 (58–81)
71 (57–82)
84 (74–93)
40 (25–65)
50 (38–68)
76 (69–89)
75 (61–86)
88 (80–96)
55 (40–70)
56 (44–63)
0.013
0.024
0.030
0.006
0.513
  1. a Having a score ≥ 1 on the Ahlbäck scale for rKOA
  2. b Knee pain status at the questionnaire
  3. rKOA radiographic knee osteoarthritis; NCP no chronic pain; CRP chronic regional pain; CWP chronic widespread pain; BMI body mass index; VFA visceral fat area; KOOS Knee injury and Osteoarthritis Outcome Score; ADL function in daily living; Sport/Rec function in sport and recreation; QoL knee-related quality of life