Table 3 Mean Item Changes (sd) and Standardized Response Means (SRM, 95% CI)
| Â | Change Preop-1st Postop | Change 1st Postop- 2nd Postop | SRM Preop- 1st Postop | SRM 1st Postop- 2nd Postop |
|---|---|---|---|---|
WOMAC Pain Items | Â | Â | Â | Â |
   Walking on flat | 0.31 (1.06) | 0.97 (0.95) | 0.29 (0.09, 0.50) | 1.02 (0.83, 1.28) |
   Up/down stairs | 0.40 (1.14) | 0.98 (1.00) | 0.36 (0.17, 0.55) | 0.98 (0.80, 1.16) |
   Night in bed | 0.11 (1.25) | 0.63 (1.02) | 0.08 (-0.11, 0.29) | 0.62 (0.40, 0.84) |
   Sitting or lying | -0.10 (1.07) | 0.82 (0.85) | -0.09 (-0.30, 0.10) | 0.97 (0.77, 1.22) |
   Standing | 0.16 (1.10) | 0.84 (0.89) | 0.15 (-0.04, 0.34) | 0.94 (0.74, 1.17) |
WOMAC SIMILAR-8 Items | Â | Â | Â | Â |
   Descending stairs | 0.14 (1.23) | 0.86 (1.13) | 0.12 (-0.08, 0.34) | 0.76 (0.57, 0.98) |
   Ascending stairs | 0.33 (1.23) | 0.79 (1.07) | 0.27 (0.06, 0.51) | 0.74 (0.55, 0.94) |
   Rising from sitting | 0.28 (1.10) | 0.70 (0.90) | 0.25 (0.06, 0.45) | 0.78 (0.57, 0.94) |
   Standing | 0.26 (1.01) | 0.79 (0.87) | 0.26 (0.06, 0.45) | 0.91 (0.72, 1.13) |
   Walking on flat | 0.23 (0.97) | 0.92 (0.88) | 0.24 (0.06, 0.45) | 1.05 (0.86, 1.28) |
   Rising from bed | -0.16 (1.04) | 1.17 (0.92) | -0.16 (-0.35, 0.03) | 1.28 (1.01, 1.63) |
   Lying in bed | 0.12 (1.11) | 0.71 (0.94) | 0.10 (-0.10, 0.29) | 0.76 (0.55, 0.98) |
   Sitting | -0.14 (1.03) | 0.88 (0.86) | -0.14, (-0.35, 0.05) | 1.02 (0.81, 1.30) |
WOMAC DISSIMILAR-8 Item | Â | Â | Â | Â |
   Bending to floor | -0.60 (1.23) | 1.13 (1.15) | -0.49 (-0.68, -0.30) | 0.99 (0.82, 1.20) |
   In/out car | 0.06 (1.09) | 1.10 (0.94) | 0.05 (-0.14, 0.25) | 1.17 (0.94, 1.41) |
   Going shopping | -0.37 (1.18) | 1.35 (1.22) | -0.31 (-0.52, -0.11) | 1.10 (0.86, 1.40) |
   Socks/stockings on | -0.22 (1.36) | 0.90 (1.16) | -0.16 (-0.35, 0.02) | 0.78 (0.57, 1.03) |
   Getting in/out bath | -0.37 (1.26) | 1.20 (1.03) | -0.16 (-0.48, -0.11) | 1.28 (1.00, 1.41) |
   Getting on/off toilet | -0.07 (1.15) | 0.91 (0.88) | -0.07 (-0.27, 0.12) | 1.04 (0.87, 1.23) |
   Heavy duties | -0.64 (1.09) | 1.14 (1.18) | -0.59 (-0.81, -0.41) | 0.97 (0.76, 1.20) |
   Light duties | -0.48 (1.12) | 1.12 (0.94) | -0.43 (-0.63, -0.27) | 1.19 (0.94, 1.49) |
Not included on either scale | Â | Â | Â | Â |
Socks/stockings off | -0.09 (1.34) | 0.93 (1.12) | -0.06 (-0.27, 0.14) | 0.84 (0.64, 1.07) |