Fig. 2From: Both comorbidity and worse performance status are associated with poorer overall survival after external beam radiotherapy for prostate cancerCox proportional hazards model of overall survival after EBRT in different Charlson Comorbidity groups. Otherwise healthy men are the baseline, CCI ≥ 4 are severely comorbid, and CCI = 1–3 are men with mild to moderate comorbidity. CCI = Charlson Comorbidity IndexBack to article page