Criteria for evaluation of individual patient data |
Drug administration preceded thrombocytopenia; recovery from thrombocytopenia complete and sustained after drug discontinued Other drugs administered prior to thrombocytopenia were continued or reintroduced after discontinuation of the suspected drug Other etiologies of thrombocytopenia excluded Re-exposure to the drug resulted in recurrent thrombocytopenia |
Levels of evidenceDefinite: all 4 criteria met Probable: Criteria 1–3 met Possible: Criterion 1 met Unlikely: Criterion 1 not met Data not evaluable* |
Criteria for evaluation of group data |
Levels of evidenceDefinite: randomized controlled clinical trial demonstrating significantly greater frequency of thrombocytopenia in the drug administration group Probable: non-randomized clinical trial demonstrating greater frequency of thrombocytopenia in the drug administration group Possible: case series without controls reporting thrombocytopenia associated with drug administration Data not evaluable* |