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Table 1 Study Factors and Allocation of Participants

From: Impact of different cover letter content and incentives on non-response bias in a sample of Veterans applying for Department of Veterans Affairs disability benefits: a randomized, 3X2X2 factorial trial

 

Factor 1: What Veterans were told about the survey’s content

Survey Asks about Combat

Survey asks about unwanted sexual attention

Survey asks about lifetime and military experiences

Factor 3: Honoraria

Factor 3: Honoraria

Factor 3: Honoraria

$20

$40

$20

$40

$20

$40

Factor 2: What Veterans were told about how their name was obtained for the study

Name obtained from list of OEF/OIF/OND Veterans

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

Name obtained from a list of Veterans applying for disability benefits

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

n = 80

40 men, 40 women

  1. OEF/OIF/OND Operation Enduring Freedom, Operation Iraqi Freedom, Operation New Dawn