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Table 3 Cost-effectiveness of postal survey approaches

From: Effect of questionnaire length, personalisation and reminder type on response rate to a complex postal survey: randomised controlled trial

  Long Short Combined
  Survey pack Reminderb Survey pack Reminderb Survey pack Reminderb
   Card Pack   Card Pack   Card Pack
No. printed 500 231 216 500 224 224 1000 455 440
Total cost (£) 1712.8 150.1 545.1 1385.6 144.4 402.6 3098.4 294.5 947.7
Unit cost (£) 3.4 0.7 2.5 2.8 0.6 1.8 4.8 0.6 2.2
No. returned 42 12 18 62 14 23 104 26 41
Cost-effectivenessa (£) 40.7 12.5 30.3 22.4 10.3 17.5 29.8 11.3 23.1
  1. a Cost per usable survey returned
  2. b Additional cost of reminder