Table 1.

Demographic data and other parameters (mean ± SD).

	Group C (n = 29)	Group S (n = 29)	P value
Age (years)	48 ± 11.3	50 ± 9.9	0.58
Height (cm)	161 ± 3.5	160 ± 3.8	0.78
Weight (kg)	58 ± 6.9	58 ± 7.1	0.91
Insertion time (s)	9.9 ± 1.6	18.7 ± 1.2	< 0.001
Anesthesia time (min)	130 ± 23.6	130 ± 22.1	0.95
IV-PCA (mL) (24 h)	54 ± 6.3	56 ± 6.2	0.53

Values are mean ± SD.

IV-PCA; intravenous patient controlled analgesia.