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Table 1 Characteristics of the study population (n = 2,583)

From: Factors associated with use of breast cancer screening services by women aged ≥ 40 years in Korea: The Third Korea National Health and Nutrition Examination Survey 2005 (KNHANES III)

Socio-demographic factors   n %
Age (years) 40-49 1001 38.75
  50-64 922 35.69
  65+ 660 25.55
Education No 422 16.34
  Elementary school (≤ 6 years) 751 29.07
  Middle/high school (7-12 years) 1146 44.37
  University/higher (≥ 13 years) 264 10.22
Household monthly income1 Lowest tertile (≤ US$650) 851 32.95
  Middle tertile (US$650-1,345) 866 33.53
  Highest tertile (≥ US$1,345) 835 32.33
National health insurance (NHI)/Medicaid NHI 2428 94.00
  Medicaid 155 6.00
Private health insurance (PHI) No 948 36.70
  Yes 1629 63.07
NHI with or without PHI NHI with PHI 1590 65.49
  NHI without PHI 832 34.27
Medicaid with or without PHI Medicaid with PHI 39 25.16
  Medicaid without PHI 116 74.84
Marital status2 With spouse 1769 68.49
  Without spouse 812 31.44
Residential area Urban 1952 75.57
  Rural 631 24.43
Health behavioral risk factors    
Alcohol Never 1062 41.11
  Less than once per month 795 30.78
  More than once per month 726 28.11
Lifetime smoker3 No 2348 90.90
  Yes 235 9.10
Physical activity of moderate intensity4 Never 1558 60.32
  More than once per week 719 27.84
  Everyday 306 11.85
Psychological and cognition factors    
Stress Often 926 35.85
  Rarely 1657 64.15
Self-reported depression5 No 2036 78.82
  Yes 546 21.14
Attitude towards effectiveness of medical examination Effective 1589 61.52
  Not effective/not received medical exam. 993 38.44
Physical function and health status    
Self-reported health status Healthy 693 26.83
  Fair 947 36.66
  Unhealthy 943 36.51
Number of chronic diseases6 0-3 1497 57.96
  4+ 1086 42.04
Disabled7 No 2494 96.55
  Yes 89 3.45
Visual problem No 1544 59.78
  Yes 1039 40.22
Hearing problem No 2202 85.25
  Yes 381 14.75
Walking problem No 1931 74.76
  Yes 652 25.24
Limitation in daily activities No 2136 82.69
  Yes 447 17.31
  1. 1 To calculate income per adult equivalent, we defined as household 'income/square root of person'
  2. 2 The term 'spouse' refers to an individual who is legally married or cohabiting, 'without spouse' refers to an individual who is single, divorced, or separated
  3. 3 'Lifetime smoker' included respondents who reported that they have smoked at least 100 cigarettes in their lifetime and now smoke
  4. 4 Moderate-intensity activitieswere defined as lasting at least 10 minutes and increasing heart rate slightly compared with sedentary activities
  5. 5 Experience of depression was assessed by the question, "During the past 1 year, have you often been bothered by little interest or pleasure in doing things nearly every day for the past 2 weeks?"
  6. 6 Chronic diseases such as hypertension, diabetes, cardiovascular disease, lung disease, musculoskeletal disease, gastrointestinal disease, and anemia
  7. 7 Registered as a disabled person