Proportional Reporting Ratio (PRR) for a Drug

Proportional Reporting Ratio (PRR) for a Drug: 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 PRR for several adverse events that have been reported with a drug.  Drug Adverse Event Data:

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