Table 2

Study characteristics and distribution of cases and control according to sociodemographic and selected exposure variables

Variable categoriesCases (344)Controls (469)χ2P
n (%)n (%)
Age (yr)
 ≤402 (0.6)18 (3.8)
 41–5546 (13.4)101 (21.6)
 56–70165 (48.0)197 (42.0)
 ≥70131 (38.1)153 (32.6)
Sex
 Males259 (75.3)294 (62.7)
 Females85 (24.7)175 (37.3)
Residence
 Urban, Montevideo46 (13.4)149 (31.9)
 Urban, other cities188 (54.7)234 (50.0)
 Rural110 (32.0)85 (18.2)<0.0001
 Data unknown1
Years of study
 None42 (12.3)38 (8.1)
 1–4208 (60.8)203 (43.3)
 5–884 (24.6)167 (35.6)
 ≥98 (2.3)61 (13.0)<0.0001
 Data unknown2
Smoking status
 Nonsmoker73 (21.2)181 (38.6)
 Exsmoker83 (24.1)126 (26.9)
 Current smoker188 (54.7)162 (34.5)<0.0001
Type of tobacco
 Nonsmokers73 (21.3)181 (38.6)
 Blond92 (26.8)190 (40.5)
 Black151 (44.0)73 (15.6)
 Mixed27 (7.9)25 (5.3)<0.0001
 Data unknown1
Total alcohol (ml/day)
 Nondrinker120 (34.9)270 (57.6)
 1–6058 (16.9)93 (19.8)
 61–18082 (23.8)66 (14.1)
 ≥18184 (24.4)40 (8.5)<0.0001
All fruits and vegetables (servings/year)
 <105106 (30.8)105 (22.4)
 105–416165 (48.0)228 (48.7)
 ≥41773 (21.2)135 (28.9)0.007
 Data unknown1