Table 1.

Demographic characteristics of study and control groups

	Group I (n = 18)	Group II (n = 19)	Group III (n = 19)	Group IV (n = 20)	Group C (n = 19)
Age (year)	42.6 ± 9.7	44.8 ± 10.6	48.7 ± 10.2	42.3 ± 11.2	45.8 ± 10.9
Sex (male/female)	11/7	12/7	9/10	13/7	11/8
Height (cm)	169.8 ± 7.4	170.7 ± 8.2	167.7 ± 6.8	171.3 ± 7.9	166.4 ± 6.5
Weight (kg)	78.9 ± 14.3	81.9 ±  15.2	77.4 ± 13.1	76.2 ± 11.8	72.6 ± 11.2
ASA (I/II)	14/4	15/4	13/6	14/6	13/6
Operation time (min)	115.1 ± 26.7	108.4 ± 31.1	106.2 ± 29.8	117.7 ± 32.6	104.8 ± 28.4

Data are given as (n) or mean ±SD