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Table 1 Demographic and lifestyle characteristics of the head and neck cancer patients and control subjects

From: Regular recreational physical activity and risk of head and neck cancer

Characteristics Case
N = 623
n (%)
Control
N = 731
n (%)
P
Age (years)
 Mean (SE) 55.4 (0.4) 54.6 (0.4) 0.20
Sex
 Men 581 (93.3) 713 (97.5) 0.0001
 Women 42 (6.7) 18 (2.5)  
Education
   Elementary school 168 (27.0) 123 (16.8) <0.0001
 Junior high 185 (29.7) 133 (18.2)  
 High school/Technical school 202 (32.4) 259 (35.4)  
 Some college or more 68 (10.9) 216 (29.6)  
Alcohol drinking
 Never + occasional 196 (31.5) 385 (52.7) <0.0001
 Former regular 89 (14.3) 93 (12.7)  
 Current regular 338 (54.2) 253 (34.6)  
 Never 186 (29.9) 351 (48.0) <0.0001
 1 drink or less per month 10 (1.6) 34 (4.7)  
 1-2 drinks per week 26 (4.2) 51 (7.0)  
 3-5 drinks per week 32 (5.1) 44 (6.0)  
 Daily drinkers 353 (56.6) 245 (33.5)  
 Unknown 16 (2.6) 6 (0.8)  
Betel quid chewing
 Never 179 (28.7) 509 (69.7) <0.0001
 Former 235 (37.7) 141 (19.3)  
 Current 209 (33.6) 80 (10.9)  
 Unknown 0 (0.0) 1 (0.1)  
 Never 179 (28.7) 509 (69.7) <0.0001
 0.1–9.9 pack-years 92 (14.8) 74 (10.1)  
 10.0–19.9 pack-years 75 (12.0) 44 (6.0)  
 20.0–29.9 pack-years 68 (10.9) 32 (4.4)  
 30.0 or more pack-years 193 (31.0) 69 (9.4)  
 Unknown 16 (2.6) 3 (0.4)  
 Pack-years (SE) 26.8 (1.6) 8.3 (0.8) <0.0001
Cigarette smoking
 Never 89 (14.3) 230 (31.5) <0.0001
 Former 117 (18.8) 146 (20.0)  
 Current 416 (66.8) 354 (48.4)  
 Unknown 1 (0.1) 1 (0.1)  
 Never 89 (14.3) 230 (31.5) <0.0001
 0.1–9.9 pack-years 27 (4.3) 61 (8.3)  
 10.0–19.9 pack-years 58 (9.3) 89 (12.2)  
 20.0–29.9 pack-years 109 (17.5) 90 (12.3)  
 30.0 or more pack-years 332 (53.3) 256 (35.0)  
 Unknown 8 (1.3) 5 (0.7)  
 Pack-years (SE) 35.8 (1.1) 23.8 (1.0) <0.0001
Vegetable intake
 Non-daily 113 (18.1) 59 (8.1) <0.0001
 Daily 508 (81.6) 672 (91.9)  
 Unknown 2 (0.3) 0 (0.0)  
Fruit intake
 Non-daily 434 (69.6) 334 (45.7) <0.0001
 Daily 186 (29.9) 396 (54.2)  
 Unknown 3 (0.5) 1 (0.1)  
  1. Abbreviations: N number, SE standard error