Table 4

Standardised response mean (SRM) of pain and function by sex and osteoarthritic joint

Baseline to end of rehabilitation (n=197)
Numbers	Pain	M	F	Total
	Hip	31	48	79
	Knee	29	89	118
	Total	60	137	197

WOMAC	Pain	M	F	Total	Function	M	F	Total
	Hip	0.495	0.794	0.669	Hip	0.796	0.778	0.770
	Knee	0.437	0.867	0.743	Knee	0.407	0.651	0.591
	Total	0.470	0.844	0.736	Total	0.545	0.692	0.628

SF-36	Bodily pain	M	F	Total	Physical functioning	M	F	Total
	Hip	0.452	0.675	0.589	Hip	0.087	0.179	0.147
	Knee	0.367	0.529	0.491	Knee	0.234	0.352	0.323
	Total	0.391	0.574	0.528	Total	0.173	0.300	0.249

Test of difference^4-150 (p values)		M	F	Total		M	F	Total
	Hip	0.815	0.415	0.479	Hip	0.000	0.000	0.000
	Knee	0.635	0.002	0.005	Knee	0.002	0.004	0.002
	Total	0.507	0.002	0.005	Total	0.000	0.000	0.000

Baseline to three month follow up (n=211)
Numbers	Pain	M	F	Total
	Hip	32	55	87
	Knee	31	93	124
	Total	63	148	211

WOMAC	Pain	M	F	Total	Function	M	F	Total
	Hip	0.279	0.312	0.302	Hip	0.304	0.129	0.182
	Knee	0.137	0.579	0.429	Knee	−0.069	0.449	0.270
	Total	0.195	0.475	0.377	Total	0.070	0.318	0.235

SF-36	Bodily pain	M	F	Total	Physical functioning	M	F	Total
	Hip	0.203	0.508	0.400	Hip	−0.213	−0.228	−0.223
	Knee	0.452	0.532	0.514	Knee	0.001	0.171	0.122
	Total	0.339	0.521	0.468	Total	−0.078	0.032	−0.001

Test of difference^4-150 (p values)		M	F	Total		M	F	Total
	Hip	0.669	0.137	0.347	Hip	0.005	0.006	0.000
	Knee	0.040	0.618	0.281	Knee	0.684	0.003	0.071
	Total	0.207	0.543	0.154	Total	0.221	0.000	0.000

A negative SRM reflects worsening of health status, a positive SRM improvement.
↵4-150 Test of difference: comparison of WOMAC and SF-36 per stratum by the modified jack knife test. Null hypothesis: The two SRMs are not different. p Value = type I error = error probability of rejection of the null hypothesis.