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Table 1 Number of call attempts for completed interviews and for all call records for main study

From: Utility of telephone survey methods in population-based health studies of older adults: an example from the Alberta Older Adult Health Behavior (ALERT) study

Number of attempts Completed interviews All call records
  Frequency(N) Percent (%) Cumulative percent Frequency(N) Percent (%) Cumulative percent
1 426 32.9 32.9 13,313 37.0 37.0
2 355 27.4 60.3 6,460 17.9 64.9
3 204 15.7 76.0 4,076 11.3 66.2
4 150 11.6 87.6 2,205 6.1 72.4
5 104 8.0 95.6 4,524 12.6 84.9
6 46 3.5 99.2 4,997 13.9 98.8
7 7 0.5 99.7 306 0.9 99.7
8+ 4 0.3 100.0 119 0.3 100.0
Total 1,296 100 100 36,000 100 100
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