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Table 1 Demographics of weighted list assisted random digit dialling sample and weighted electronic white pages sample from the New South Wales Population Health Survey in 2003 compared with demographics of the New South Wales population (Australian Bureau of Statistics 2001 Census)

From: Does sampling using random digit dialling really cost more than sampling from telephone directories: Debunking the myths

Demographic LA-RDD % EWP % New South Wales %
    2001 Census* 2003 Estimate**
Born in Australia 78.4 79.9 70.5 69.5
Non-English speaking at home 14.0 12.4 24.3 24.5
Indigenous 2.07 1.85 1.9 2.0
Marital status
   Married (registered) 60.97 62.92 51.7 50.5
   Widowed 4.66 4.64 6.5 6.6
   Separated but not divorced 3.14 2.53 3.3 3.5
   Divorced 6.36 5.67 7.2 7.5
   Never married 24.86 24.24 31.3 31.5
Social Economic Index for Areas
   First quartile 20.33 19.71 25 25
   Second quartile 25.96 25.91 25 25
   Third quartile 23.75 23.64 25 25
   Fourth quartile 29.96 30.75 25 25
  1. * ABS 2001 Census. [13]
  2. ** Estimate projected from the 1991, 1996 and 2001 ABS Census. [15]
  3. Source: New South Wales Health Survey Program, Centre for Epidemiology and Research, New South Wales Department of Health.