Table 3.

Logistic regression analyses of risk factors for metachronous MPC

	Metachronous MPC
Variables	RR (95% CI)	Pvalue
Sex (female vs male)	1.51 (0.54-4.21)	0.436
Age (<60 vs ≥60)	2.46 (1.20-5.07)	0.014
Stage (III, IV vs I, II)	4.82 (1.37-16.97)	0.014
Multiplicity (Single vs Multiple)	6.76 (3.05-14.96)	<0.001
Maximal length (≥3.5 cm vs <3.5 cm)	1.35 (0.64-2.84)	0.428
Alcohol history (No vs Yes)	1.87 (0.83-4.22)	0.131