Table 4.

Odds Ratios for the Occurrence of Esophageal Squamous Cell Carcinoma According to the Subsite of Oral Squamous Cell Carcinoma

	ESCC
	ESCC (%)	OR	(95% CI)	P value
Anatomical subsites
Tongue N = 96	21 (21.8)	0.94	0.42–2.13	.634
Mandibular gingiva N = 39	5 (12.8)	0.43	0.12–0.26	.076
Floor of the mouth N = 20	9 (45)	3.44	1.13–10.09	.013
Buccal mucosa N = 14	3 (21.4)	0.94	0.16–3.86	.619
Upper jaw N = 2	1 (50)	3.55	0.04–280.56	.397

CI = confidence intervals; ESCC = esophageal squamous cell carcinoma; SCC = squamous cell carcinoma.