Table 3.
Univariate and Multivariate Cox model analysis data predicting for PRFS. Significant covariates in the univariate and multivariate model are printed in bold typeface
| Cox model analysis Variables |
Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| p-value | Hazard Ratio | 95% CI | p-value | |
| Overall model | 0.001 | |||
| T-Stage | 0.083 | ns | ||
| Gleason | 0.127 | ns | ||
| Pre-RT PSA | 0.012 | ns | ||
| Number of NCCN risk factorsa | 0.008 | 2.15 | (1.17–3.95) | 0.013 |
| Rectal Cross-section | 0.558 | ns | ||
| Neo-adjuvant HT | 0.395 | ns | ||
| Expected dose to the CTV | 0.143 | ns | ||
| Candidate ECD descriptorb | 0.005 | 3.88 | (1.26–1 1.99) | 0.0 18 |
aPre-treatment PSA10+, G7+ and T2c+
bInteraction term: probability of low dose (10 Gy less than prescription dose) and probability of extra-capsular disease at about 1 cm dorso-laterally of the prostate gland