Table 3

Within operation comparisons

Change in mean score95% CI
OXS
 Preoperation—12 monthsHip−20.2(−20.9 to −19.5)
Knee−15.4(−16.2 to −14.7)
 Preoperation—6 monthsHip−19.2(−19.9 to −18.5)
Knee−13.9(−14.6 to −13.1)
 6 months—12 monthsHip−1.0(−1.7 to −0.3)
Knee−1.5(−2.3 to −0.8)
PCS
 Preoperation—12 monthsHip13.2(12.4 to 14.0)
Knee10.2(9.4 to 11.0)
 Preoperation—6 monthsHip12.3(11.6 to 13.1)
Knee9.4(8.6 to 10.2)
 6 months—12 monthsHip0.9(0.1 to 1.6)
Knee0.8(−0.02 to 1.6) ns
MCS
 Preoperation—12 monthsHip3.1(2.1 to 4.1)
Knee0.3(−0.8 to 1.3) ns
 Preoperation—6 monthsHip3.9(2.9 to 4.9)
Knee0.6(−0.6 to 1.5) ns
 6 months—12 monthsHip−0.8(−1.8 to 0.2) ns
Knee−0.2(−1.2 to 1.5) ns
  • MCS, mental component summary; ns, not significant; OXS, Oxford Score; PCS, physical component summary.