I first tried this query and the returned count of Injury was 9.


Then I added the field adverse_event_flag:Y and used the following query. The returned count of injury changed to 6.


I thought that, when event_type is Injury, it always indicates that the event has resulted in an adverse outcome in a patient. That is, the count of injuries should be the same by running these two queries. Why does the second query return smaller count? Thanks.

1 Answer 1


Reporters fill out a paper form when submitting adverse events to FDA; they may not check the right boxes in all cases.

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