Table 3. Cox proportional hazards model^† for factors associated with T rise in cycle 1 and cycle 2.

Parameter*	Hazard Ratio (HR)	95% CI on HR	P value
T > 211 in cycle 1
Age (> 67 vs. ≤ 67)	2.01	1.24 - 3.25	0.0045
Baseline DHT (< 153 vs. ≥ 153)	2.34	1.32 - 4.15	0.0037
T 50-211 in cycle 1
T nadir (≤ 20 vs. > 20)	2.22	1.46 - 3.36	0.0002
T > 211 in cycle 2
Baseline T (low vs. normal)	4.24	1.20 - 15.07	0.025
Baseline DHT (< 300 vs. ≥ 300)	2.94	1.41 - 6.12	0.0038
Caucasian vs. African American	4.36	1.61 - 11.76	0.0037
T nadir (≤ 20 vs. > 20)	3.59	1.81 - 7.11	0.0002
T 50-211 in cycle 2
T nadir (≤ 20 vs. > 20)	4.56	2.58 - 8.06	< 0.0001

^*Groups with delayed T rise listed first;

^†The final model, resulting from backward elimination, is presented. Factors included in the initial models, but which did not meet criteria to remain in the final model were baseline T in cycle 1 (for both models in cycle 1), and prior RT (for both models in cycle 2).