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Table 1 Characteristics of male nasopharyngeal carcinoma high-risk population by smoking status, Cangwu county, China, 2006–2013

From: Lack of association between cigarette smoking and Epstein Barr virus reactivation in the nasopharynx in people with elevated EBV IgA antibody titres

Characteristics Smoking status P Valuea
Never (N = 37) Former (N = 40) Current (N = 236)
No. % No. % No. %
Residential area        0.039
 Libu 4 11.1 2 5.6 30 83.3  
 Shatou 9 6.5 21 15.1 109 78.4  
 Shiqiao 24 17.4 17 12.3 97 70.3  
Age        0.176
 Mean(SD) 47.3(7.5) 49.5(9.3) 49.7(8.0) 0.323
 30–39 4 10.0 6 15.0 30 75.0  
 40–49 19 18.3 12 11.5 73 70.2  
 50–59 14 8.3 22 13.1 133 78.7  
Education level        0.329
 Primary school or below 16 10.1 20 12.6 123 77.4  
 Secondary school 15 13.6 18 16.4 77 70.0  
 High school or above 6 13.6 2 4.5 36 81.8  
  1. aP value for the comparison of means of age was determined by a one-way ANOVA, other P values were determined by a chi-square test. Abbreviation: SD, standard deviation
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