|
Model
|
Age Hazard Ratio
|
Az
|
|---|
|
Accepted
| | |
|
Dichotomous Age
|
1.72 (1.02, 2.90)
|
0.5792
|
|
Grade adjusted
|
1.78 (1.06, 3.02)
|
0.606
|
|
Gender adjusted
|
1.64 (0.96, 2.78)
|
0.669
|
|
Grade Gender adjusted
|
1.68 (0.99, 2.85)
|
0.677
|
|
Model
|
z Hazard Ratio
|
Az
|
|
Hybrid
| | |
|
Dichotomous z
|
0.25 (0.14, 0.47)
|
0.691
|
|
Gender adjusted
|
0.28 (0.15, 0.53)
|
0.738
|
- For the age and z variables, two groups were formed using the respective distribution median as the cut-point and compared. The hazard ratios (HRs) are provided parenthetically with 95% confidence intervals. The area under the receiver operating characteristic curves (Azs) derived from Cox regression models are also provided. Because age and z translate inversely with respect to hazard, increased age confers a greater hazard while decreased z confers a greater hazard. To make HR comparisons of z with age, the reciprocal of the z HR is required.
