Table 3

Multivariate analyses on RR of baseline characteristics for recurrent colorectal neoplasia

	Any adenoma		Advanced adenoma
	HR (95% CI)^*	p Value	HR (95% CI)^*	p Value
Aged 60–69 (vs 50–59)	1.99 (1.60 to 2.47)	<0.001	1.51 (0.86 to 2.65)	0.153
Male	1.59 (1.26 to 1.99)	<0.001	1.00 (0.57 to 1.77)	0.980
Family history of colorectal cancer	1.18 (0.83 to 1.69)	0.361	1.14 (0.48 to 2.76)	0.761
BMI ≥25 kg/m²	0.92 (0.60 to 1.22)	0.487	1.10 (0.74 to 1.35)	0.611
Abdominal obesity^†	1.02 (0.86 to 1.22)	0.823	1.06 (0.70 to 1.59)	0.790
Current smoking (vs never)	1.25 (0.96 to 1.56)	0.060	1.55 (0.97 to 2.50)	0.075
Alcohol consumption	1.30 (1.06 to 1.60)	0.015	1.21 (0.76 to 1.92)	0.425
Aspirin and/or NSAID use	0.87 (0.68 to 1.09)	0.232	1.00 (0.59 to 1.71)	0.693
Statin use	0.96 (0.46 to 1.50)	0.502	1.02 (0.55 to 1.38)	0.721
College graduate	1.06 (0.49 to 2.12)	0.765	1.05 (0.62 to 1.46)	0.603
High economic status^‡	1.36 (0.71 to 2.33)	0.304	1.20 (0.78 to 1.96)	0.526
Adenoma characteristics
≥3 adenomas (vs 1 or 2)	1.87 (1.47 to 2.37)	<0.001	3.06 (1.51 to 6.57)	<0.001
≥10 mm adenoma (vs <10 mm)	0.80 (0.57 to 1.13)	0.220	3.02 (1.80 to 5.06)	<0.001
With villous feature (vs no villous component)	0.62 (0.42 to 0.93)	0.027	1.48 (0.74 to 2.95)	0.189
Risk category
Low-risk group (vs normal group)	1.93 (1.58 to 2.36)	<0.001	1.14 (0.61 to 2.17)	0.686
High-risk group (vs low-risk group)	2.70 (2.17 to 3.35)	<0.001	5.95 (3.66-9.68)	<0.001

↵* Models adjusted for all variables in the table.
↵† >90 cm in men and >80 cm in women according to the WPRO waist circumference criteria.23
↵‡ Monthly family income ≥US$5000.
BMI, body mass index; NSAID, non-steroidal anti-inflammatory drug.