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Table 7 False positive findings by category

From: Using VigiBase to Identify Substandard Medicines: Detection Capacity and Key Prerequisites

Category Number of unlikely SSFFCs Number of confirmed non-SSFFCs Percentage of false positives explained
Expected low efficacy 28 7 49
Switch of brand 8 1 13
Medication error 5 1 8
Poor responders 5 1 8
Interaction 5 0 7
Compliance 5 0 7
Switch of regimen 5 0 7
Irrational prescribing 1 0 1
  1. SSFFC substandard/spurious/falsely labelled/falsified/counterfeit medical product