Table 5. Hazard ratios for adenoma recurrence, according to baseline patient and adenoma characteristics (447 followed up participants).

	Univariate analysis*			Multivariate analysis
Characteristic	Hazard ratio	95% CI	P value	Hazard ratio	95% CI	P value
Gender
female	1	reference		1	reference
male	0.63	0.44 to 0.90	0.01	0.71	0.48 to 1.04	0.08
Age (per 10 years)	1.12	0.95 to 1.31	0.16	1.07	0.89 to 1.28	0.48
Aspirin use
no	1	reference		1	reference
yes	1.68	0.97 to 2.92	0.07	1.38	0.77 to 2.48	0.27
Number (per 1 increase)	1.20	1.06 to 1.35	<10−2	1.17	1.03 to 1.34	0.01
Advanced adenoma
no	1	reference		1	reference
yes	1.32	0.95 to 1.84	0.10	1.32	0.93 to 1.88	0.12

^*variables that had a p value<0.20.