Table 2.

Effects of individual treatment variables on intra-abdominal abscess formation following laparoscopic appendectomy for perforated appendicitis

Treatment variable	Unadjusted OR (95% CI)
Endostapler	6.83 (1.51–30.83)
Abdominal drain	0.38 (0.07–1.96)
Abdominal irrigation	1.08 (0.29–4.06)
2 antibiotics*	1.20 (0.32–4.49)

CI = confidence interval; OR = odds ratio.

^*Use of a 2-drug versus a 3-drug regimen.