Dynamic Proportional Reporting Ratio (PRR) for a Drug-Event Combination: The proportional reporting ratio (PRR) is a simple way to get a measure of how common an adverse event for a particular drug is compared to how common the event is in the overall database.
A PRR > 1 for a drug-event combination indicates that a greater proportion of the reports for the drug are for the event than the proportion of events in the rest of the database, while a PRR of 2 for a drug event combination indicates that the proportion of reports for the drug-event combination is twice the proportion of the event in the overall database, This app calculates the monthly cumulative PRR for a drug-event combination. Drug Adverse Event Data: https://open.fda.gov/drug/
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