Are there researcher allegiance effects in diagnostic validation studies of the PHQ-9? A systematic review and meta-analysis

@inproceedings{Manea2017AreTR,
  title={Are there researcher allegiance effects in diagnostic validation studies of the PHQ-9? A systematic review and meta-analysis},
  author={Laura Manea and Jan R. B{\"o}hnke and Simon Gilbody and Andrew Stephen Moriarty and Dean McMillan},
  booktitle={BMJ open},
  year={2017}
}
OBJECTIVES To investigate whether an authorship effect is found that leads to better performance in studies conducted by the original developers of the Patient Health Questionnaire (PHQ-9) (allegiant studies). DESIGN Systematic review with random effects bivariate diagnostic meta-analysis. Search strategies included electronic databases, examination of reference lists and forward citation searches. INCLUSION CRITERIA Included studies provided sufficient data to calculate the diagnostic… CONTINUE READING
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