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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