Table 3.

Change in endpoints

		Baseline	Follow-up: 3 Months	Change: Follow-up - Baseline	P
SF 12-PCS, n, mean ± SD	132	35.6 ± 9	39.7 ± 8.7	4.2 ± 11.3	< 0.001
SF 12-MCS, n, mean ± SD,	132	48.1 ± 11.1	50 ± 10.7	2.0 ± 11.3	0.044
WOMAC–Index, n, mean ± SD	132	45.7 ± 16	22.5 ± 14.5	−23.2 ± 17.6	< 0.001

Abbreviation: SD standard deviation, CI confidence intervals, SF 12 Short-Form General Health Survey, PCS physical component scores, MCS mental component scores, WOMAC Western Ontario and McMaster Universities Arthritis Index, P p-value for paired t-test

SF 12 ranges from 0 to 100, with 0 indicating worst quality of life

WOMAC-Index ranges from 0 to 100, with 100 indicating more limitation (pain, stiffness and physical function)