Background
The impact of temporal changes in cancer therapy on health status among childhood cancer survivors has not been evaluated.
Objective
Compare proportions of self-report of adverse health status outcomes across three decades among childhood cancer survivors.
Design
Cross-sectional
Setting
27 North American institutions
Participants
14,566 adults, ≥5 year survivors (median age 27, range 18-48 years) treated 1970-1999
Measurements
Patient-report of poor general or mental health, functional impairment, activity limitation, cancer-related anxiety or pain were evaluated as a function of treatment decade, cancer treatment exposures, chronic health conditions, demographics, and health habits.
Results
Despite reductions in late-mortality and proportions with severe, disabling or life threatening chronic health conditions (33.4% among survivors treated 1970-79, 21.0% among those treated 1990-99), proportions reporting adverse health status did not decrease by treatment decade. When compared to those diagnosed 1970-79, survivors diagnosed 1990-99 were more likely to report poor general health (11.2% vs. 13.7%, p < 0.001) and cancer-related anxiety (13.3% vs. 15.0%, p < 0.001). From 1970-79 to 1990-99, the proportions reporting adverse outcomes were higher (p < 0.001) among leukemia (9.5% vs. 13.9%, poor general health) and osteosarcoma (23.9% vs. 36.6%, pain) survivors. Temporal changes in treatment exposures were not associated with changes in proportions reporting adverse health status. However, smoking, not meeting physical activity guidelines, and being either underweight or obese were associated with poor health status.
Limitations
The considerable improvement in survival among children diagnosed with cancer in the 1990s compared to those diagnosed in the 1970s makes it difficult to definitively determine the impact of risk factors on later self-reported health status without considering their impact on mortality itself.
Conclusions
Because survival rates following a diagnosis of childhood cancer have improved substantially over the past thirty years, this population now includes persons who would have died in earlier eras. Unfortunately, self-reported health status among those that do survive has not improved. This is despite evolution of treatment designed to reduce toxicities, and is an important reminder that even in the modern era, cancer cure is not without consequences.”