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Fig. 4 | BMC Psychiatry

Fig. 4

From: Can mental health diagnoses in administrative data be used for research? A systematic review of the accuracy of routinely collected diagnoses

Fig. 4

Box plots summarising a positive predictive values (PPV) and b Cohen’s kappa of diagnoses reported in four or more studies. Treating each result as a point, the median of PPVs is the transition line, the interquartile range is indicated by the box and the range of findings by the whiskers. Numbers of studies in parentheses

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