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Fig. 1 | BMC Medical Research Methodology

Fig. 1

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

Fig. 1

Bias in the 8 non-response correlates in men by the 7 study-arm manipulations. Grid lines range from − 12 (the center point) to + 12 percentage points. Negative numbers indicate under-representation of the characteristic in respondents compared to the sample, and positive numbers, over-representation. The blue circle represents 0 or no bias. MST = military sexual trauma. OEF/OIF/OND = Operation Enduring Freedom, Operation Iraqi Freedom, Operation New Dawn. SMI = Serious mental illness diagnosis

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BMC Medical Research Methodology

ISSN: 1471-2288

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