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

BMC Cancer

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

Variables	Cases^a	%	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

ISSN: 1471-2407