Table 2.

Multivariate logistic regression analysis of surgical margin status in permanent sections of oral and lip squamous cell carcinoma

	Positive surgical margin (n = 41)				Dysplastic surgical margin (n = 19)				Negative surgical margin (n = 118)
	No. of cases	Odds Ratio	95% CI	p Value	No. of cases	Odds Ratio	95% CI	p Value	No. of cases	Odds Ratio	95% CI	p Value
Frozen sections done	22	0.70	0.31 - 1.61	0.40	14	1.26	0.39 - 4.07	0.70	75	1.15	0.56 - 2.37	0.70
pT-Stage
pT1*	10	-	-	-	9	-	-	-	64	-	-	-
pT2	10	1.72	0.61 - 4.83	0,31	9	1.39	0.47 - 4.09	0.55	34	0.57	0.25 - 1.29	0.18
pT3	4	4.44	0.97 - 20.35	0.055	1	0.77	0.08 - 7.76	0.83	5	0.33	0.08 - 1.38	0.13
pT4	17	5.61	1.98 - 15.87	0.001	0	-	-	-	15	0.42	0.16 - 1-07	0.07
Grading
G1*	5	-	-	-	2	-	-	-	21	-	-	-
G2	27	1.43	0.41 - 4.91	0.57	12	1.35	0.26 - 7.07	0.72	69	0.76	0.27 - 2.14	0.61
G3	9	1.03	0.25 - 4.23	0.97	5	1.21	0.19 - 7.68	0.84	28	1.02	0.32 - 3.32	0.97
Tumor localization
Lower jaw*	19	-	-	-	5	-	-	-	23	-	-	-
Floor of mouth	7	0.49	0.16 - 1.47	0.20	7	1.44	0.37 - 5.57	0.59	20	1.35	0.53 - 3.47	0.53
Tongue	3	0.21	0.05 - 0.84	0.03	3	0.39	0.08 - 1.83	0.23	33	4.70	1.55 - 14.23	0.01
Upper and lower lips	2	0.42	0.08 - 2.30	0.32	1	0.38	0.04 - 3.70	0.40	12	3.07	0.72 - 13.11	0.14
Upper jaw	8	0.77	0.25 - 2.35	0.64	1	0.20	0.02 - 1.88	0.16	20	2.09	0.75 - 5.85	0.16
Other locations	2	0.57	0.10 - 3.14	0.52	2	0.73	0.12 - 4.52	0.73	10	1.80	0.46 - 7.06	0.40

* Baseline