Table 4. Multivariate logistic regression for fistula.

	Fistula			Adjusted for patient age (1-year increase)
	OR	95%CI	p-value	OR	95%CI	p-value
Neoadjuvant therapy	0.769	0.266–2.210	0.623	1.062	0.990–1.148	0.103
Neoadjuvant therapy complete response	0.461	0.050–3.340	0.453	1.089	0.956–1.292	0.253
Clinical T staging	0.894	0.514–1.506	0.679	1.060	0.990–1.147	0.113
Clinical N staging	1.085	0.727–1.590	0.675	1.062	0.990–1.149	0.100
Number of lymph nodes dissected	0.933	0.841–1.021	0.153	1.070	0.998–1.160	0.073
Treatment response	1.158	0.907–1.491	0.244	1.056	0.980–1.143	0.146
Surgery year (1-year increase)	0.836	0.642–1.058	0.153	1.082	1.003–1.185	0.059

OR: odds ratio; CI: confidence interval.