Table 1.

Baseline comparison of factor scores for the SF-36 between the two groups $(\stackrel{-}{\chi }\pm \hspace{0.17em}s)$.

		Placebo	XPYS	Z value	P value
Physical functioning	FAS	85.25 ± 11.53	85.70 ± 12.79	−0.509	0.610
	PPS	85.25 ± 11.53	86.03 ± 12.52	−0.644	0.520
Role physical	FAS	47.25 ± 36.39	54.25 ± 35.90	−1.376	0.169
	PPS	47.25 ± 36.39	54.64 ± 36.14	−1.434	0.152
Bodily pain	FAS	68.29 ± 14.59	65.54 ± 13.12	−1.513	0.130
	PPS	68.29 ± 14.59	65.13 ± 12.83	−1.643	0.100
General health	FAS	45.69 ± 13.66	45.68 ± 16.19	−0.158	0.874
	PPS	45.69 ± 13.66	45.24 ± 16.03	−0.345	0.730
Vitality	FAS	50.05 ± 13.46	51.60 ± 15.17	−0.661	0.538
	PPS	50.05 ± 13.46	51.29 ± 15.14	−0.457	0.648
Social functioning	FAS	70.75 ± 17.70	72.13 ± 16.17	−0.511	0.610
	PPS	70.75 ± 17.70	72.42 ± 16.23	−0.652	0.514
Role emotional	FAS	47.00 ± 35.17	52.33 ± 33.59	−1.079	0.281
	PPS	47.00 ± 35.17	52.58 ± 33.62	−1.113	0.266
Mental health	FAS	54.96 ± 14.54	56.76 ± 13.41	−0.838	0.402
	PPS	54.96 ± 14.54	56.99 ± 13.38	−0.942	0.346