Methods for identifying adverse drug reactions in primary care: A systematic review.

In another study [ 39 ], a pharmacist medicines review (proceeding from a patient-completed ADR questionnaire) reduced the mean number of drug-associated symptoms at follow-up in the instrument arm (by 4.0) compared with the usual care control arm (5.0), but this did not reach statistical significance (incident rate ratio between groups 0.90, 95%CI 0.43 to 1.42, sample size = 228).

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