Group E Group K p
Age (year) 41.6 ± 10.7 39.1 ± 8.7 0.332
Gender  M/F 15/15 16/14 0.796
BMI 26.9 ± 4.3 27.8 ± 4.4 0.421
Duration of Surgery (min) 39.4 ± 8.3 39.4 ± 8.3 0.982
Table 1: Demographic variables and duration of surgery (mean ± SD).