Table 19Strength of evidence for warfarin with or without vitamin K—Clinical outcomes

Cardiovascular drug/OutcomeRisk of BiasConsistencyDirectnessPrecisionStrength of EvidenceConclusions
All-cause mortality and strokeModerateNADirectImpreciseInsufficientTwo small trials clearly underpowered for clinical events

Abbreviation: NA = not applicable

From: Results

Cover of Dietary Supplements in Adults Taking Cardiovascular Drugs
Dietary Supplements in Adults Taking Cardiovascular Drugs [Internet].
Comparative Effectiveness Reviews, No. 51.
Seely D, Kanji S, Yazdi F, et al.

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