Conclusion: These findings suggest that variations in the amount of compensation for completing assessments can differentially affect outcome measurements, depending on treatment group assignment. Scientific Significance: Adequate financial compensation may minimize bias when treatment condition is associated with differential dropout and may be a cost-effective way to reduce attrition. Moreover, active users may be more likely than non-active users to drop out if compensation is inadequate, especially in control groups or in groups who are not receiving active treatment.
PMID: 21936751 [PubMed – as supplied by publisher] (Source: The American Journal of Drug and Alcohol Abuse)
Compensation Effects on Clinical Trial Data Collection in Opioid-Dependent Young Adults.
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