Table 1. Clinical characteristics of patients in the L-C and H-C groups.

Variable	L-C Group (n = 550)		H-C Group (n = 550)		X2	P
	NO.	%	NO.	%
Mean age ± SD, years	37.4 ± 15.3		36.8 ± 16.1		1.313a	0.239
Gender
Female	294	53.5	301	54.7	0.179	0.672
Male	256	46.5	249	45.3
BMI, kg/m2
< 23.0	260	47.3	280	50.9	1.475	0.478
23.0–27.5	182	33.1	171	31.1
≥ 27.5	108	19.6	99	18
Diabetes
No	480	87.3	493	89.6	1.504	0.220
Yes	70	12.7	57	10.4
ASA degree
I	271	49.3	266	48.4	0.119	0.730
II	230	41.8	240	43.6
III	47	8.5	43	7.8
IV	2	0.4	1	0.2

Abbreviations: SD, standard deviation; BMI, body mass index; ASA, American Society of Anesthesiologists;

^aT-test result.