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Table 1 Sociodemographic and screening characteristics of study sample (n = 11,409), Malmö, Sweden (1992–2009)

From: Psychosocial factors and attendance at a population-based mammography screening program in a cohort of Swedish women

Sociodemographic variables N (%)
Mean age at baseline (SD) 54.9 (6.7)
Mean age at 1st subsequent screening invitation (SD) 56.7 (6.4)
Age group at baseline (years)  
  44–49 3,442 (30.2)
  50–54 2,470 (21.6)
  55–59 2,086 (18.3)
  60–64 2,155 (18.9)
  65–72 1,256 (11.0)
Education level  
  High school or higher 3,717 (32.7)
  Less than high school 7,665 (67.3)
  Missing 27
Occupation (present or latest job)  
  Self-employed/employer/farmer 885 (7.8)
  Higher non-manual 741 (6.6)
  Middle non-manual 2,049 (18.1)
  Lower non-manual 3,489 (30.9)
  Skilled manual 803 (7.1)
  Unskilled manual 3,341 (29.5)
  Missing 101
Employment status  
  Employed 7,695 (67.6)
  Not employed 3,681 (32.4)
  Missing 33
Country of birth  
  Sweden 10,066 (88.3)
  Other 1,336 (11.7)
  Missing 7
Invited to screening program before baseline  
  Yes 8,459 (74.1)
  No 2,950 (25.9)
Number of screening invitations after baseline  
  1 793 (7.0)
  2 602 (5.3)
  3 568 (5.0)
  4 808 (7.1)
  5 1,271 (11.1)
  6 1,626 (14.3)
  7 1,896 (16.6)
  8 1,921 (16.8)
  9 1,247 (10.9)
  10 609 (5.3)
  11 67 (0.6)
  12 1 (0.0)