TABLE 3.

Correlation of HPV prevalence with clinical data in tonsillar carcinomas^a

Malignancyb		Histologyc		Smokingd		Drinkinge
Type	Frequencyf	Type	Frequency	Amt	Frequency	Amt	Frequency
T	25/39 (64.1)	WD	2/3 (66.67)	−	3/5 (60.0)	−	1/5 (20.0)
N	3/34 (8.8)	MD	15/25 (60.0)	+	3/6 (50.0)	+	7/8 (87.5)
		PD	8/11 (72.7)	++	21/28 (75.0)	++	18/26 (69.2)

^aP values were calculated by the χ² test and were considered statistically significant if the P value was <0.01. The P values were 0.001, 0.603, 0.43, and 0.04 for the malignancy, histology, smoking, and drinking groups, respectively.

^bN, nontumor; T, tumor.

^cCell tumor differentiation grade according to histopathology: MD, moderate differentiation; PD, poor differentiation; WD, good differentiation.

^d−, nonsmoker; +, smoker for less than 20 years; ++, smoker for more than 20 years.

^e−, nondrinker; +, less than one alcoholic drink per week; ++, more than one alcoholic drink per week.

^fFrequency data are presented as number of samples HPV DNA positive/total number of samples tested (percent).