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Table 6 Changes in the WOMAC questionnaire observed after a follow-up period of 6 months in patients that reported changes in their condition

From: Validation of the Spanish version of the Oxford knee score and assessment of its utility to characterize quality of life of patients suffering from knee osteoarthritis: a multicentric study

 

Pain is “much worse” N = 51

Pain is “slightly worse” N = 82

Pain is “slightly better” N = 61

Pain is “much better” N = 47

WOMAC pain

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

−9.9 (−14.9– −4.8)

0.55

−2.0 (−5.2–1.3)

0.13

17.7 (13.1–22.3)

0.98

28.8 (21.5–36.1)

1.15

 

Rigidity is “much worse” N = 44

Rigidity is “slightly worse” N = 85

Rigidity is “slightly better” N = 52

Rigidity is “much better” N = 42

WOMAC rigidity

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

−13.1 (−20.9– −5.3)

0.51

−0.7 (−5.9–4.5)

0.03

12.3 (5.1–19.4)

0.48

30.1 (21.9–38.2)

1.15

 

Impairment is “much worse” N = 47

Impairment is “slightly worse” N = 90

Impairment is “slightly better” N = 47

Impairment is “much better” N = 31

WOMAC impairment

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

Average change

(CI 95%)

E.S.

−10.5 (−15.2– −5.7)

0.65

−2.4 (−5.5–0.7)

0.16

18.4 (12.3–24.4)

0.89

38.6 (29.7–47.6)

1.58

  1. E.S. Effect size
  2. WOMAC Western Ontario and McMaster Universities Osteoarthritis Index
  3. Final scores were substracted from basal scores. This way, positive outcomes indicate improvement