Summary of design characteristics and threshold levels of identified RAMs
| Risk assessment model | Acronym/descriptor | Derivation | Design | Incorporation of bleeding risk? | Number of variables | Threshold (suggested cut-point) | Attempted validation? |
| Roberts et al42 | The GEMNet guideline | EC | Dichotomous | Yes | 11 | N/A | Yes |
| Keenan et al49 | The Plymouth Rule | EC | Ordinal | No | 14 | >2 | Yes |
| Nemeth et al36 | The L-TRiP(cast) score | Regression | Ordinal | No | 14 | >8 | Yes |
| Saragas et al41 | The modified Caprini score | EC | Ordinal | No | 36 | >1 | No |
| Eingartner et al45 | N/A | EC | Ordinal | No | 9 | >1 | No |
| Haque et al46 | N/A | EC | Ordinal | No | 14 | >2 | No |
| Giannadakis et al44 | N/A | EC | Dichotomous | No | 12 | N/A | No |
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.