Table 4.

Multivariate analysis of factors that may influence conversion from laparoscopic to open surgery

	B	p	OR	(95% CI)
Primary surgeon age	0.049	0.062*	1.05	0.98–1.12
Perforation area	0.916	< 0.001*	2.5	1.8–3.5
Sex	0.182	0.367*	1.2	0.8–1.8
CCI	0.336	0.038*	1.4	1.02–1.92
Tokyo classification	1.131	< 0.001*	3.1	2.1–4.5

p: value, CI: confidence interval, OR: Odds Ratio, CCI: Charlson comorbidity index

Bold values indicate statistically significant p values (p < 0.05)

*: Multivariate analysis