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Table 1

Main characteristics of the study population

Oral/pharyngeal cancer patients (n = 121)Laryngeal cancer patients (n = 129)Control individuals (n = 172)
Male (%) 113 (93%) 127 (98%) 163 (95%) 
Age, years    
Mean (SD) 54.4 (10.2) 55.0 (9.4) 54.9 (11.1) 
Range 25–89 22–85 25–88 
Mean daily alcohol consumption, g/day (SD) 111.8 (71.5)a 98.1 (69.9)b 77.1 (64.0) 
Mean duration of alcohol drinking, years (SD) 30.3 (12.6) 30.1 (14.1) 29.0 (16.5) 
Mean daily tobacco consumption, g/day (SD) 28.2 (13.6)c 30.4 (15.8)b 25.1 (12.5) 
Mean duration of smoking, years (SD) 33.9 (10.2) 34.6 (8.8)c 32.2 (11.6) 
Oral/pharyngeal cancer patients (n = 121)Laryngeal cancer patients (n = 129)Control individuals (n = 172)
Male (%) 113 (93%) 127 (98%) 163 (95%) 
Age, years    
Mean (SD) 54.4 (10.2) 55.0 (9.4) 54.9 (11.1) 
Range 25–89 22–85 25–88 
Mean daily alcohol consumption, g/day (SD) 111.8 (71.5)a 98.1 (69.9)b 77.1 (64.0) 
Mean duration of alcohol drinking, years (SD) 30.3 (12.6) 30.1 (14.1) 29.0 (16.5) 
Mean daily tobacco consumption, g/day (SD) 28.2 (13.6)c 30.4 (15.8)b 25.1 (12.5) 
Mean duration of smoking, years (SD) 33.9 (10.2) 34.6 (8.8)c 32.2 (11.6) 
a

P = 0.0001, Wilcoxon’s rank-sum test (comparison with control individuals).

b

P < 0.01, Wilcoxon’s rank-sum test (comparison with control individuals).

c

P < 0.05, t test(comparison with control individuals).

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