Table 2

Summary of design characteristics and threshold levels of identified RAMs

Risk assessment modelAcronym/descriptorDerivationDesignIncorporation of bleeding risk?Number of variablesThreshold (suggested cut-point)Attempted validation?
Roberts et al 42 The GEMNet guidelineECDichotomousYes11N/AYes
Keenan et al 49 The Plymouth RuleECOrdinalNo14>2Yes
Nemeth et al 36 The L-TRiP(cast) scoreRegressionOrdinalNo14>8Yes
Saragas et al 41 The modified Caprini scoreECOrdinalNo36>1No
Eingartner et al 45 N/AECOrdinalNo9>1No
Haque et al 46 N/AECOrdinalNo14>2No
Giannadakis et al 44 N/AECDichotomousNo12N/ANo
  • EC, Expert Consensus; GEMNet, Guidelines in Emergency Medicine Network; L-TRIP(cast), Leiden Thrombosis Risk in Plaster (cast); N/A, not applicable; RAM, risk assessment method.