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Table 1 Call outcomes for all numbers dialled by contact method

From: Mobile phones are a viable option for surveying young Australian women: a comparison of two telephone survey methods

  Fixed-line % Mobile %
Total numbers dialled 5390 100.0% 3697 100.0%
Eligible for study 190 3.5% 145 3.9%
   Completed interview 140 2.6% 128 3.5%
   Personal refusal 19 0.4% 10 0.3%
   Terminated/Incomplete interview 0 0.0% 0 0.0%
   Unavailable for duration of survey 31 0.6% 7 0.2%
Ineligible (due to age, sex, language***) 1935 35.9% 1215 32.9%
Unknown eligibility 785 14.6% 1309 35.4%
   No answer 386 7.2% 284 7.7%
   Message left on recording device 331 6.1% 941 25.5%
   Engaged 34 0.6% 70 1.9%
   Refusal/Other 34 0.6% 14 0.4%
Number invalid 2480 46.0% 1028 27.8%
   Business 284 5.3% 111 3.0%
   Disconnected 1902 35.3% 897 24.3%
   Fax/data line 294 5.5% 20 0.5%
Crude response rate* (%) 73.7%   88.3%  
Estimated response rate** (%) 53.8%   45.0%  
  1. *completed interviews/eligible; see methods for detailed description
  2. ** completed interviews/(eligible + eligible/(eligible+ineligible) × unknown eligible); see methods for detailed description
  3. ***numbers with language difficulty comprised 15 of the ineligible fixed-line calls and 2 of the mobile calls