Table 1.

Demographics and baseline characteristics

	Group RP (n = 22)	Group Con (n = 20)	P value
Age, (y)	66.1 ± 7.2	67.9 ± 6.5	0.397
Weight, (kg)	71.9 ± 9.6	67.3 ± 10.9	0.146
Height, (cm)	162.27 ± 4.92	155.85 ± 4.93	0.221
Body mass index, (kg/m2)	27.3 ± 3.7	27.6 ± 3.8	0.829
Sex, (male)	5	4	0.578
Duration of surgery, (min)	136 ± 22	124 ± 17	0.058
Duration of spinal block, (min)	143 ± 7	140 ± 9	0.215
Surgical incision length, (cm)	13.4 ± 3.0	12.0 ± 3.0	0.097
Range of motion before surgery, (degree)	102 ± 13	102 ± 16	0.667

Values are shown as mean ± SD