Establishing the Psychometric Properties of the ICOAP Questionnaire through Intra-Articular Treatment of Osteoarthritic Pain: Implementation for the Greek Version
Table 3
Paired samples -test: ES and SRM.
Means (SD)
Mean difference (SD)
Effect Size
Standardized Response Mean
Corr. coef.
Test statistic
Phase A
Phase C
% diff.
(95% CI)
(95% CI)
ICOAP
Constant pain
29.60 (28.6)
14.72 (20.05)
14.88 (28.05) −50.27
0.52 (0.31–0.73)
0.53 (0.32–0.74)
0.377
5.007
Intermittent pain
41.99 (22.86)
22.80 (17.64)
19.19 (25.64) −45.71
0.84 (0.60–1.07)
0.75 (0.54–0.96)
0.219
7.062
Total pain
36.36 (19.48)
19.12 (15.43)
17.23 (21.32) −47.41
0.88 (0.65–1.11)
0.81 (0.6–1.02)
0.271
7.626
SF-36
Physical Functioning
36.12 (23.66)
49.38 (26.55)
−13.26 (25.37) +36.7
−0.56 (−0.53)–(−0.57)
−0.52 (−0.73)–(−0.31)
0.494
−4.930
Role Physical
34.83 (42.41)
51.12 (44.26)
−16.29 (51.27) +46.77
−0.384 (−0.37)–(−0.371)
−0.32 (−0.53)–(−0.11)
0.301
−2.997
Bodily Pain
37.08 (19.69)
62.12 (21.20)
−25.04 (25.64) +67.57
−1.27 (−1.28)–(−1.25)
−0.97 (−1.18)–(−0.77)
0.215
−9.213
General Health
52.03 (20.81)
60.19 (19.85)
−8.16 (22.82) +15.68
−0.39 (−0.4)–(−0.38)
−0.36 (−0.56)–(−0.15)
0.371
−3.372
Vitality
56.29 (21.11)
67.64 (17.20)
−11.35 (21.63) +20.16
−0.54 (−0.58)–(−0.49)
−0.52 (−0.73)–(−0.31)
0.377
−4.949
Social Functioning
57.72 (25.39)
74.72 (24.49)
−16.99 (26.39) +29.45
−0.67 (−0.69)–(−0.647)
−0.64 (−0.85)–(−0.43)
0.440
−6.073
Role Emotional
44.94 (42.67)
64.79 (42.45)
−19.85 (49.93) +44.17
−0.46 (−0.47)–(−0.447)
−0.4 (−0.60)–(−0.19)
0.312
−3.751
Mental Health
62.74 (18.68)
73.17 (15.55)
−10.42 (19.29) +16.6
−0.56 (−0.6)–(−0.53)
−0.54 (−0.75)–(−0.33)
0.376
−5.099
Physical component
32.16 (8.59)
38.36 (10.34)
−6.2 (10.18) +19.27
−0.72 (−0.69)–(−0.76)
−0.61 (−0.82)–(−0.4)
0.434
−5.742
Mental component
46.61 (10.2)
52.33 (8.87)
−5.72 (11.39) +12.27
−0.56 (−0.59)–(−0.54)
−0.5 (−0.71)–(−0.29)
0.293
−4.735
value: . Bootstrap results are based on 1000 bootstrap samples.
