Cox proportional hazard model to assess hazard of dying due to prostate cancer adjusted with propensity scores.

Table 8: Cox proportional hazard model to assess hazard of dying due to prostate cancer adjusted with propensity scores.

Parameter	Estimate	Hazard ratio (95% CI)	P value
Treatment Conservative management	-0.3062	0.736 (0.427, 1.268)	0.2696
Race Black Others	0.9310 -1.1677	2.537 (1.235, 5.211) 0.311 (0.046, 2.094)	0.0112 0.2301
Marital status Single	-1.4567	0.233 (0.038, 1.415)	0.1135
Age 66-69 70-74 75-79	-3.1571 -1.7305 -1.8661	0.043 (0.016, 0.112) 0.177 (0.094, 0.334) 0.155 (0.072, 0.334)	< 0.0001 < 0.0001 < 0.0001
Grade Well-differentiated	-0.9618	0.382 (0.057, 2.582)	0.3237
Comorbidity Null One	-1.0699 -1.3512	0.343 (0.189, 0.623) 0.259 (0.119, 0.566)	0.0004 0.0007

Note: Model was found to be statistically significant. Result of likelihood ratio test: χ² value - 840.389 and P value < 0.0001. CI indicates Confidence Interval. Base case includes patients who were in immediate treatment group, with race white, married, aged 80 or above, with moderately differentiated tumors and with greater than 1 comorbidities.