Table 2.
Univariate and multi-variate analysis for PSA cotrol rate using Cox proportional hazrds model.
| Variable | Strata | PSA control | |||||
|---|---|---|---|---|---|---|---|
| Univariate analysis | Multivariate analysis | ||||||
| HR | 95% CI | p | HR | 95% CI | p | ||
| Age, years | <72 | 1 | (referent) | — | |||
| 72− | 1.238 | 0.726–2.114 | 0.4332 | NA | |||
| T classification | T1-2 | 1 | (referent) | — | 1 | (referent) | — |
| T3-4 | 3.529 | 1.970–6.322 | <0.0001 | 2.182 | 1.022–4.658 | 0.0437 | |
| Gleason score | −7 | 1 | (referent) | — | 1 | (referent) | — |
| 8− | 2.149 | 1.223–3.778 | 0.0078 | 1.6 | 0.610–2.205 | 0.6503 | |
| Pretratment PSA (ng/mL) | <20 | 1 | (referent) | — | 1 | (referent) | — |
| 20− | 2.677 | 1.437–4.989 | 0.0019 | 1.22 | 0.563–2.644 | 0.6147 | |
| D’Amico's risk classification | Low-Intermediate | 1 | (referent) | — | NA | ||
| High | 2.719 | 1.598–4.624 | 0.0002 | ||||
| Hormonal therapy | No | 1 | (referent) | — | |||
| Yes | 1.313 | 0.766–2.251 | 0.3223 | NA | |||
| Treatment modalities | LDR-BT | 1 | (referent) | — | 1 | (referent) | — |
| IG-IMRT | 2.713 | 1.551–4.743 | 0.0005 | 1.962 | 1.034–3.720 | 0.0391 | |
Bold values indicate statistically significance.
Abbreviations; CI = confidence interval; HR = hazard ratio.