Table 2.

Multivariable analyses of prognostic factors for Clostridium difficile infection

Variable	Hazard ratio	95% confidence interval	P
Age ≥ 65 years	1.673	0.863–3.244	0.128
Sex, male	0.818	0.3663–1.829	0.625
Abnormal BMI (<18.5 or ≥ 25 kg/m2)	0.843	0.4473–1.591	0.599
Alcohol consumption	0.850	0.4033–1.795	0.670
Smoking history	0.680	0.3073–1.507	0.342
Diabetic mellitus	0.511	0.1743–1.500	0.222
Hypertension	0.778	0.3853–1.571	0.484
Serum haemoglobin < 12	0.558	0.2653–1.176	0.125
Serum albumin < 3.5	1.894	0.8923–4.020	0.096
Serum creatinine ≥1.4	0.996	0.2133–4.654	0.996
PCRT	0.552	0.2943–1.037	0.065
Adjuvant chemotherapy	2.276	1.0643–4.870	0.034
Pre-CDI leak *	3.753	1.4103–9.990	0.008

^*Leakage was assessed for anastomosis between colon and rectum. PCRT, preoperative chemoradiotherapy; CDI, Clostridium difficile infection.