Table 1: Patient characteristics.

Group IGroup IIGroup IIIGroup IVp
Mean ± SD, n (%)MedianMean ± SD, n (%)MedianMean ± SD, n (%)MedianMean ± SD, n (%)Median

Age38.2 ± 14.73538.6 ± 14.93735.9 ± 14.73335.7 ± 14.1330.000
Sex
Female22736.1%23935.6%21529.9%24326.0%0.000
Male40163.9%43364.4%50570.1%69074.0%
BMI26.3 ± 4.82626.1 ± 4.92626.2 ± 5.12525.9 ± 4.6250.417
ASA
I34154.3%33149.3%42058.3%63367.8%0.041
II26341.9%32448.2%28539.6%28530.5%
III223.5%172.5%141.9%141.5%
IV20.3%00.0%10.1%10.1%

Data were analyzed using the Kruskal–Wallis (Mann–Whitney U test) or chi-square test.