Skip to main content

Table 1 Distribution of socio-demographic characteristics and other exposure variables among case and control subjects

From: Esophageal cancer risk by type of alcohol drinking and smoking: a case-control study in Spain

Variables Casesa % Controls %
Sex     
   Men 187 92.61 285 62.64
   Women 15 7.39 170 27.78
Age     
   <60 years old 86 42.36 149 32.75
   60–69 years old 79 39.41 167 36.70
   ≥ 70 years old 37 18.23 139 30.55
Province     
   Alicante 45 22.66 139 30.55
   Valencia 157 77.34 316 69.45
Educational level     
   <Primary 114 56.65 246 54.07
   Primary 67 33.00 172 37.80
   ≥ Secondary 21 10.34 37 8.13
Alcohol intake     
   Never 16 7.88 171 37.36
   Ever 186 92.12 284 62.64
Tobacco smoking     
   Never smoker 23 11.39 218 47.91
   Ever smoker 179 88.61 237 52.09
Fruit and Vegetable daily intake (in tertile)     
   < 166 g/d 121 59.90 104 22.86
   166–255 g/d 43 21.29 141 30.99
   >255 g/d 38 18.81 210 46.15
  1. a All cases were histologically confirmed.