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Table 1 Comparison of participants and non-participants

From: Recruitment and participant baseline characteristics in the dialysis outcomes in those aged 65 years or older study

   Participated (N = 225) Declined to participate (N = 107) chi2 p value
   n % n %
Gender
 Male 144 64.0 49 45.8  
 Female 81 36.0 58 54.2 0.002
Age group
 65–69 87 38.7 50 46.7  
 70–74 64 28.4 36 33.6  
 75–79 45 20.0 12 11.2 0.097
 80+ 29 12.9 9 8.4  
 median age 71 70  
Ethnicity (as in ANZDATA)
 European 108 48.0 11 10.3  
 Māori 45 20.0 24 22.4  
 Pacific 53 23.6 52 48.6 0.000
 Other 19 8.4 19 17.8  
 Missing 0 0.0 1 0.9  
Ethnicity (Self reported multiple ethnicities were prioritised)
 Europeans 96 42.7  
 Māori 50 22.2  
 Pacific 52 23.1
 Other 27 12.0  
Receiving dialysis
 Yes 169 75.1 68 63.6  
 No 56 24.9 39 36.4 0.029
Living Arrangement
 Alone 33 14.7
 Living with others 192 85.3  
Cigarette smoking
 Current smoker 14 6.2  
 Ex smoker 118 52.4  
 Never smoker 91 40.4
 Missing 2 0.9  
Alcohol drinker
 Current drinker 96 42.7
 Non drinker 129 57.3  
Highest educational qualification
 None 108 48.0  
 Secondary (age 13–18) 44 19.6  
 Post secondary 69 30.7
 Missing 4 1.8  
Comorbiditiesa
 Cardiovascular disease 151 67.1 68 63.6 0.52
 Cerebrovascular disease 17 7.6 4 3.7 0.18
 Peripheral vascular disease 45 20.0 21 19.6 0.94
 Diabetes mellitus 120 53.3 80 74.8 < 0.01
 Respiratory disease 49 21.8 12 11.2 0.02
 Cancer (other than skin cancer) 38 16.9 8 7.5 0.02
 Musculoskeletal 68 30.2 32 29.9 0.95
 Other 140 62.2 81 75.7 0.02
Comorbidity count
 0 to 2 104 46.2 40 37.4  
 3 to 6 121 53.8 67 62.6 0.13
Cause of ESKD
 Glomerulonephritis 38 16.9 15 14.0  
 Hypertension 38 16.9 10 9.3  
 Polycystic kidney 12 5.3 0 0.0 < 0.01
 Diabetes mellitus 92 40.9 68 63.6  
 Other 45 20.0 14 13.1  
  1. amultiple comorbidities possible