TABLE 4.

Comparison of univariate and multivariate analysis of adenoma factors relative to the occurrence of HGD.

	Univariate	Multivariate
Size
P	<0.001	<0.001
OR (95% CI)
≤1 cm	1
1–2 cm	16.408 (10.614–25.363)	13.890 (8.756–22.034)
2–3 cm	63.099 (38.347–103.829)	48.684 (28.641–82.755)
>3 cm	193.326 (113.632–328.913)	165.599 (95.244–287.923)
Morphology
P	<0.001	>0.800
OR (95% CI)
Sessile	2.630 (1.678–4.123)	0.957 (0.580–1.579)
Pedunculated	3.818 (2.435–5.984)	0.946 (0.568–1.575)
Flat	1
Amount
P	<0.001	<0.05
OR (95% CI)
1	1
2–3	2.131 (1.559–2.914)	1.261 (0.893–1.781)
>3	3.182 (2.238–4.523)	1.582 (1.070–2.339)
Age
P	<0.001	<0.05
OR (95% CI)
<50	1
50–64	2.311 (1.477–3.166)	1.866 (1.152–3.022)
>64	3.164 (2.014–4.973)	2.129 (1.300–3.487)
Location
P	<0.001	<0.001
OR (95% CI)
Proximal	1
Distal	2.932 (2.118–4.059)	2.252 (1.589–3.190)

HGD, high-grade dysplasia, CI, confidence interval. Distal = descending colon, rectum, and sigmoid colon; proximal = above the descending colon.