Table 1. Demographic characteristics and baseline data of patients in two groups .

Variable	Fixed volume method	MLT	P value
Age, mean ± SD	63.28±21.07*	60.62±21.83	0.869
Sex (M/F)	36/19	31/24	0.327
BT	37.60±0.24	37.15±0.74	0.854

* MLT: minimal leak Technique; BT: body temperature.