Table 5.
Hazard ratio of death on Cox regression analysis
| Variables | Unadjusted hazard ratio UHR (95%CI) | Adjusted hazard ratio AHR (95%CI)* |
|---|---|---|
| Age (years) | ||
| <=50 (n = 20) | 1.00 | |
| >50 (n = 43) | 2.37 (0.68 to 8.34) | |
| Ulcer | ||
| No (n = 49) | 1.00 | |
| Yes (n = 14) | 14.86 (5.05 to 43.76) | |
| Clark’s level | ||
| 1 (I/II/III) (n = 38) | ||
| 2 (IV/V) (n = 25) | 6.64 (2.13 to 20.66) | |
| Thickness (mm) | ||
| <=1.5 (n = 41) | 1.00 | 1.00 |
| >1.5 (n = 22) | 13.30 (3.76 to 47.06) | 5.80 (1.56 to 21.54) |
| Peak systolic frequency(MHz) | ||
| <=2,500 (n = 21) | 1.00 | 1.00 |
| >2,500 (n = 15) | 5.88 (1.86 to 18.57) | 5.99(1.55 to 23.16) |
*Results are adjusted in relation to age