BACKGROUNDThe authors analyzed how selfâreported health and selfâreported modified New York Heart Association (NYHA) cardiac function scores were related to cardiac systolic function, cardiac risk factors, and cancer treatment history in childhood cancer survivors who reported no symptoms of cardiac disease.METHODSLongâterm survivors of pediatric cancer who were treated between 1971 and 1995 (current ages, 16â39.7 years) underwent noninvasive clinical and laboratory cardiac risk evaluation and responded to selected subscales of the Medical Outcomes Study 36âitem Short Form Health Survey. Results were compared with survivor history of anthracycline therapy alone or with radiotherapy (n = 127 patients; mean, 10 years after diagnosis) versus no anthracycline therapy (n = 32 patients; mean, 11 years after diagnosis).RESULTSSex, current age, highest school grade completed, race, age at diagnosis, diagnostic group, years off therapy, fractional shortening (FS), heart rate, and smoking status were found to be independently predictive of selfâreported health. Interaction between female sex and higher lowâdensity lipoprotein values and between diagnosis and abnormal FS variably predicted low reported vitality and low reported modified New York Heart Association (NYHA) scores. Echocardiographic findings, cardiac risk factors, and treatment history explained 13% to 28% of the variance in perceived health and selfâreported modified NYHA scores.CONCLUSIONSSystolic function and cardiac risk factors were linked to lower selfâreported health and NYHA scores even in the absence of clinically evident cardiotoxicity. Cancer 2008. ©2008 American Cancer Society.