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Table 1 Descriptive characteristics of intracranial CNS tumor cases and matched controls. Denmark, 1989–2014

From: Intracranial tumors of the central nervous system and air pollution – a nationwide case-control study from Denmark

  CASES CONTROLS
TOTAL 21,057 37,368
Individual level factors:
FEMALE 53% 54%
Age at index datea
 median 62 63
 10th pctl 39 39
 90th pctl 80 80
Region of origin 0
 Denmark 96% 95%
 Non-Western 2% 2%
 Western 3% 3%
Marital status
 Living together 61% 59%
 Previously married 25% 26%
 Never married 14% 14%
Occupational status
 Unemployed 4% 4%
 Low skill level 23% 22%
 Medium skill level 16% 16%
 High skill level 8% 8%
 Retired 49% 50%
Disposable income (dKK)
 Median 125,757 122,812
 10th pctl 61,311 58,995
 90th pctl 254,411 254,053
At least 2 prescriptions within a year (data only available since 1996)
 Non-aspirin NSAID 28% 27%
 Aspirin 12% 13%
 Antidiabetics 4% 4%
 HRT 13% 12%
 Allergy medication 8% 8%
Parish level factors:
% of population with only basic education
  Median 27 27
  10th pctl 15 15
  90th pctl 41 42
% of population in manual labor
  Median 29 29
  10th pctl 18 18
  90th pctl 38 38
% of population retired
  Median 6 6
  10th pctl 3 3
  90th pctl 11 11
% of population unemployed
  median 4 4
  10th pctl 1 1
  90th pctl 8 8
% of population in 1st income quartile
  Median 10 10
  10th pctl 5 5
  90th pctl 18 18
% of population in social housing
  Median 13 13
  10th pctl 0 0
  90th pctl 43 43
% of population owning own dwelling
  Median 65 66
  10th pctl 29 30
  90th pctl 92 92
% single parent families
  Median 5 5
  10th pctl 3 3
  90th pctl 7 7
% of population of Danish origin
  Median 94 95
  10th pctl 84 85
  90th pctl 98 98
% of population previously convicted
  Median 0 0
  10th pctl 0 0
  90th pctl 1 1
  1. a: index date = date of diagnosis of matched case