Summary of candidate predictor variables considered a priori and included in the final GBS and LHS models
| GBS | LHS | |
| Syncope | + | x |
| Melaena | + | x |
| Alternative diagnosis* | N/A | + |
| HR, beats/min | + | + |
| SBP, mm Hg | + | x |
| CRP, mg/L | N/A | + |
| Hb, g/L | + | + |
| Urea, mmol/L | + | x |
| Urea/creatinine | x | + |
| Cardiac disease | + | x |
| Chronic liver disease | + | + |
‘N/A’ indicates a variable that was not considered in score development; ‘x’ indicates a variable that was considered but not included; ‘+’ indicates a variable that was considered and included in the final model.
*Acute alternative diagnosis for anaemia, haemodynamic instability or urea rise.
CRP, C reactive protein; GBS, Glasgow-Blatchford Score; Hb, haemoglobin; HR, heart rate; LHS, London Haemostat Score; N/A, not available; SBP, systolic blood pressure.