Avoidance and Inhibition Do Not Predict Nonrespondent Bias Among Patients With Inflammatory Bowel Disease


BACKGROUND It has been suggested that participant withdrawal from studies can bias estimates. However, this is only possible when withdrawers and nonwithdrawers differ in an important way. We tested the hypothesis that withdrawers are more likely than nonwithdrawers to be avoidant and negatively affected. METHODS A total of 1160 participants with… (More)


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