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Table 6 Survey sampling cost effectiveness

From: Effectiveness of incentives and follow-up on increasing survey response rates and participation in field studies

Sampling protocol

Surveys sent to receive 1 response (n)a

Surveys sent to recruit 1 participant (n)a,d

Costs ($)

Follow-up waves (n)

Survey length

Survey incentive

Initial wave

Follow-up wave 1

Follow-up wave 2

Follow-up wave 3

Total per mailed individual

Per response receiveda

Total to receive 1 responseb

Recruit 1 participantb,d

3

Short

$2

4.61

50.7

3.01

0.70

1.01

1.01

5.74

26.44

28.89

317.51

3

Medium

$2

4.88

53.6

3.09

0.70

1.09

1.09

5.96

29.09

31.84

349.88

0

Long

$2

12.20

134.1

3.09

3.09

37.65

39.54

434.48

3

Long

$2

6.13

67.4

3.09

0.70

1.09

1.09

5.96

36.59

39.99

439.50

2

Long

$2

8.33

91.5

3.09

0.70

1.09

4.88

40.64

44.01

483.66

0

Long

Gift card

32.26

354.5

1.09

1.09

40.83c

46.81c

503.38

  1. Data ordered from most to least cost effective method to receive a single completed survey
  2. aAssumes 100% delivery rate
  3. bAssumes 87.6% delivery rate and, if applicable, $0.248 recouped from non-deliverable initial survey waves
  4. cIncludes a mean gift card cost of $5.67
  5. dAssumes 9.1% participation rate from completed surveys across all survey mailing rounds, independent of mailing protocol. Does not include cost for actual participation in the field study ($150 or $200)