Table 1.

Characteristics of patients according to positive or negative postoperative breath tests

Variables	Negative breath test (n = 32)	Positive breath test (n = 24)	p
Age (years)	49.5 ± 9.5	49.6 ± 10.8	0.842
Women, n (%)	25 (78.1%)	19 (79.2%)	1.00
BMI (kg/m2)	31.2 ± 6.8	30.5 ± 6.3	0.673
Education level	4.66 ± 1.31	4.92 ± 1.35	0.356
SE status	5.74 ± 1.79	5.96 ± 1.43	0.510
Time after S (months)	29.3 ± 15.8	30.9 ± 24.2	0.530

The variables are expressed as mean ± SD (standard deviation); n (%) represents the number and percentage of variable. Statistical analysis was done using Mann–Whitney U and Fisher exact tests; p < 0.05

BMI, body mass index; S, surgery; SE, socioeconomic status