Table 5.

Univariate and multivariate logistic regression analysis for residual disease

Clinicopathological factors	Univariate analysis OR (95% CI), p value	Multivariate analysis OR (95% CI), p value
Tumour grade
Low grade	1.00 (ref)	1.00 (ref)
High grade	0.45 (0.06–3.53), 0.45	0.27 (0.03–5.59), 0.26
Polyp shape
Sessile	1.00 (ref)	1.00 (ref)
Pedunculated	0.97 (0.36–2.61), 0.95	1.21 (0.41–3.53), 0.73
Polyp size, mm
<4	1.00 (ref)	1.00 (ref)
≥4	NA	NA
Resection margin, mm
>0	1.00 (ref)	1.00 (ref)
0	3.16 (1.19–8.36), 0.02	3.01 (1.07–8.46), 0.04
Resection margin, mm
>1	1.00 (ref)	1.00 (ref)
0–1	3.03 (0.49–18.9), 0.24	2.86 (0.40–20.3), 0.30
High risk (Haggitt level 3–4 or Kikuchi Sm3)
No	1.00 (ref)	1.00 (ref)
Yes	NA	NA
Intramural venous invasion
No	1.00 (ref)	1.00 (ref)
Yes	1.66 (0.57–4.78), 0.35	1.37 (0.43–4.35), 0.60
Lymphatic invasion
No	1.00 (ref)	1.00 (ref)
Yes	1.31 (1.46–3.70), 0.61	1.18 (0.33–4.19), 0.80
Budding level
Bd1	1.00 (ref)	1.00 (ref)
Bd2–3	2.25 (0.83–6.05), 0.11	2.20 (0.65–7.47), 0.21