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. Author manuscript; available in PMC: 2015 Apr 15.
Published in final edited form as: JAMA Otolaryngol Head Neck Surg. 2014 Apr;140(4):312–316. doi: 10.1001/jamaoto.2013.6732

Table 2.

Patient Comorbidities

Comorbidity Patients P Valuea
HPV Negative (n = 51) HPV Positive (n = 111)
COPD, No. (%) 6 (12) 8 (7) .37
Tobacco use, mean, pack-years 46.8 25.7 <.001
Alcohol use, No. (%) <.001
 Heavy 24 (47) 18 (16) .02b
 Moderate 15 (29) 34 (31) .001b
 Rare 6 (12) 35 (32) .23b
 None 6 (12) 24 (22) <.001b
Marijuana use, No. (%) 24 (47) 26 (23) .003
Diabetes mellitus, No. (%) 5 (10) 10 (9) >.99
Major depressive disorder, No. (%) 5 (10) 10 (9) >.99
Anxiety disorder, No. (%) 6 (12) 7 (6) .35
Never smoker, No. (%) 6 (12) 60 (54) <.001

Abbreviations: COPD, chronic obstructive pulmonary disease; HPV, human papillomavirus.

a

Univariate analysis using Fisher exact test for categorical data and unpaired t test for continuous data unless otherwise indicated.

b

Multivariate analysis (controlling for diabetes mellitus, marijuana use, COPD, and smoking history).