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. 2004 May 4;90(11):2145–2148. doi: 10.1038/sj.bjc.6601858

Table 1. Distribution of cases and controls by sociodemographic characteristics.

  Controls Lymphoma cases
  Number (%) Number (%)
Total 600 (100) 529 (100)
Age (years)
 <43 130 (21.7) 95 (18.0)
 43–56 123 (20.5) 106 (20.0)
 57–67 124 (20.7) 106 (20.6)
 68–74 114 (19) 124 (23.6)
 >74 108 (18) 95 (18.1)
     
Sex
 Males 312 (52.1) 287 (54.6)
 Females 287 (47.9) 239 (45.4)
     
Recruitment area
 Barcelona 500 (83.3) 411 (78.1)
 Madrid 55 (9.2) 68 (12.9)
 Tarragona 44 (7.3) 47 (8.9)
     
Educational level attained
 Primary 237 (39.6) 212 (40.3)
 Secondary 60 (10.0) 39 (7.4)
 Higher school 17 (2.8) 20 (3.8)
 University 41 (6.8) 44 (8.4)
 Other 38 (6.3) 33 (6.3)
 No degree 138 (23.0) 110 (20.9)
 Never school 61 (10.2) 67 (12.7)
     
History of blood transfusion 160 (26.7) 129 (24.5)