3. Results
During the study period, 484 patients were assessed for eligibility for the study. After excluding 133 patients from the study, a total of 351 patients were included in the study with a median follow-up of 23 months (IQR: 20-26 months). Of the patients, 134 underwent EPC surgery, and 217 underwent SPC surgery, and the same number of the patients were analyzed because of no lost to follow-up (Figure 2). The distributions of age were found statistically similar among the groups. The patients in the SPC group more frequently were male, had recurrent sinus, and had statistically significantly more sinus orifice than the patients in the EPC group (p<0.001, p<0.001 and p<0.001, respectively) (Table 1).
The length of stay and the wound healing time were statistically significantly longer in the patients underwent EPC surgery (p<0.001 and p<0.001, respectively); however, the duration of surgery was statistically significantly longer for SPC procedure (p=0.010) (Table 2).
The occurrence of the wound site infection and the abscess were statistically significantly higher in EPC surgery (p=0.001 and p<0.001, respectively); however, the seroma was statistically significantly more common in SPC group (p=0.004) (Table 3).
Recurrence occurred in 25 patients (18.7%) through the median follow-up period of 23 months in the patients underwent EPC surgery, in 12 patients (5.5%) through the median follow-up period of 22 months in the patients underwent SPC surgery. The crude OR of recurrence for SPC procedure was 0.255 (95% CI=0.123-0.528) (p<0.001). The adjusted ORs of recurrence for SPC procedure were 0.241 (95% CI=0.115-0.506) for model 1, 0.044 (95% CI=0.015-0.132) for model 2, 0.083 (95% CI=0.020-0.348) for model 3, and 0.074 (95% CI=0.017-0.313) for model 4 (p<0.001, p<0.001, p=0.001 and p<0.001, respectively) (Table 4).