Table 1

Descriptive characteristics of cases and controls (percentages in parentheses)

MenWomen
CasesControlsCasesControls
Number of subjects279  (100)938  (100)79  (100)1048  (100)
Age group
 25–345 (2)208 (22)0 (0)234 (22)
 35–4434 (12)308 (33)6 (8)310 (30)
 45–54120 (43)238 (25)22 (28)276 (26)
 55–64120 (43)184 (20)51 (65)228 (22)
Own education
 Primary59 (21)110 (12)39 (49)314 (30)
 Apprenticeship132 (47)475 (51)24 (30)306 (29)
 Secondary70 (25)253 (27)16 (20)370 (35)
 University18 (7)100 (11)0 (0)58 (6)
Car ownership
 No66 (24)235 (25)34 (43)329 (31)
 Yes213 (76)703 (75)45 (57)719 (69)
Crowding
 No187 (67)502 (54)62 (79)604 (58)
 Yes92 (33)436 (46)17 (22)444 (42)
Mother's education
 Primary/vocational250 (90)805 (86)72 (92)892 (86)
 Secondary27 (10)122 (13)5 (6)142 (14)
 University1 (0)9 (1)1 (1)7 (1)
Father's education
 Primary/vocational232 (84)696 (75)65 (88)788 (76)
 Secondary36 (13)206 (22)7 (9)216 (21)
 University8 (3)28 (3)2 (3)30 (3)
Mother's occupation
 Industrial worker74 (27)333 (36)20 (26)377 (37)
 Agricultural worker67 (24)206 (22)19 (25)229 (22)
 Non-manual24 (9)103 (11)6 (8)109 (11)
 Professional26 (9)139 (15)3 (4)168 (16)
 Not working86 (31)147 (16)28 (36)145 (14)
Father's occupation
 Industrial worker136 (49)465 (50)38 (54)465 (46)
 Agricultural worker59 (21)131 (14)16 (23)166 (16)
 Non-manual41 (15)168 (18)12 (17)223 (22)
 Professional36 (13)149 (16)3 (4)144 (14)
 Not working3 (1)8 (1)1 (1)14 (1)