Table 3.

Univariate GEE Logistic Regression

Characteristic	OR (95% CI)	P
T stage	1.04 (0.96, 1.12)	0.40
Age	1.00 (0.98, 1.02)	0.89
Periodontal Status: ≥1 vs 0 (n = 18 cases, 36 controls)	5.71 (1.2, 27.1)	0.03
Current smoking: yes vs. no	3.04 (0.93, 9.91)	0.07
Current alcohol: yes vs. no	3.38 (1.57, 7.29)	0.002
Mean Radiation Dose (Gy) (n = 37 cases, 74 controls)	1.07 (1.02, 1.13)	0.009