Characteristics and distribution of potential confounders for vascular disease among positive and negative cohort
| Confounder | Positive cohort | Negative cohort | Relative risk (95% CI)/ p value |
|---|---|---|---|
| Male sex | 2 | 2 | RR=1.0 |
| Age (median) | 64 | 66 | |
| BSA1-150 | 1.61 | 1.71 | p=0.19 |
| Diabetes | 1 | 1 | RR=1.0 |
| Hypertension | 4 | 6 | RR=0.58 (0.11, 3.06) |
| Smoking | 8 | 6 | RR=0.64 (0.14, 2.87) |
| Hyperlipidaemia | 11 | 11 | RR=1.0 |
| Anticardiolipin antibody | 10 | 6 | RR=2.33 (0.53, 10.55) |
↵1-150 Positive cohort includes three patients whose BSA was reduced secondary to amputations.