Angela Steineck1,2,3,4, Eric J Chow5,6,7,8, David R Doody8, Beth A Mueller8,9. 1. Cancer and Blood Disorders Center, Seattle Children's Hospital, Seattle, WA, USA. angela.steineck@seattlechildrens.org. 2. Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA. angela.steineck@seattlechildrens.org. 3. Center for Clinical and Translational Research, Seattle Children's Research Institute, 1900 9t h Ave, MS JMB 10-C, Seattle, WA, 98101, USA. angela.steineck@seattlechildrens.org. 4. Cambia Palliative Care Center of Excellence, University of Washington, Seattle, WA, USA. angela.steineck@seattlechildrens.org. 5. Cancer and Blood Disorders Center, Seattle Children's Hospital, Seattle, WA, USA. 6. Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA. 7. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. 8. Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. 9. Department of Epidemiology, University of Washington, Seattle, WA, USA.
Abstract
PURPOSE: Children with cancer are frequently hospitalized. However, hospitalization and death by disease category are not well defined < 5 years from diagnosis. METHODS: We conducted a retrospective cohort study using linked cancer registry-hospital discharge-vital records to identify cancer cases < 20 years at diagnosis during 1987-2012 (n = 4,567) and comparison children without cancer, matched on birth year and sex (n = 45,582). Data linkage identified serious morbidities resulting in cancer- and non-cancer-related hospitalizations or deaths < 5 years from diagnosis. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated to compare relative hospitalization and mortality by disease category and after excluding cancer-related outcomes. Among cancer cases, relative risks of these outcomes for children with solid tumors compared with children with leukemia/lymphoma were also estimated. RESULTS: Greater rates of all-cause hospitalization (281.5/1,000 vs. 6.2/1,000 person years) and death (40.7/1,000 vs. 0.15/1,000 person years) were observed in childhood cancer cases than comparators and across all diagnosis categories. Increased hospitalization (31.0/1,000 vs. 6.2/1,000 person years; HR 5.0, 95% CI 4.5-5.5) and death (1.0/1,000 vs. 0.15/1,000 person years; HR 10.4, 95% CI 5.6-19.1) rates remained when cancer-related outcomes were excluded. Although HRs for hospitalization and death did not differ greatly by treatment era, absolute rates of hospitalization were greater (1987-1999: 233.3/1,000; 2000-2012: 320.0/1,000 person years) and death were lesser (1987-1999: 46.3/1,000; 2000-2012: 36.8/1,000 person years) in the later treatment era among cases. Children with solid tumors were less likely to have a cancer-related hospitalization than were those with leukemia/lymphoma (RR 0.91, 95% CI 0.84-0.98). CONCLUSION: Even after excluding cancer-related diagnoses, children with cancer experience greater rates of hospitalization and death in all disease categories. Results may guide future toxicity mitigation initiatives and inform anticipatory guidance for families of children with cancer.
PURPOSE: Children with cancer are frequently hospitalized. However, hospitalization and death by disease category are not well defined < 5 years from diagnosis. METHODS: We conducted a retrospective cohort study using linked cancer registry-hospital discharge-vital records to identify cancer cases < 20 years at diagnosis during 1987-2012 (n = 4,567) and comparison children without cancer, matched on birth year and sex (n = 45,582). Data linkage identified serious morbidities resulting in cancer- and non-cancer-related hospitalizations or deaths < 5 years from diagnosis. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated to compare relative hospitalization and mortality by disease category and after excluding cancer-related outcomes. Among cancer cases, relative risks of these outcomes for children with solid tumors compared with children with leukemia/lymphoma were also estimated. RESULTS: Greater rates of all-cause hospitalization (281.5/1,000 vs. 6.2/1,000 person years) and death (40.7/1,000 vs. 0.15/1,000 person years) were observed in childhood cancer cases than comparators and across all diagnosis categories. Increased hospitalization (31.0/1,000 vs. 6.2/1,000 person years; HR 5.0, 95% CI 4.5-5.5) and death (1.0/1,000 vs. 0.15/1,000 person years; HR 10.4, 95% CI 5.6-19.1) rates remained when cancer-related outcomes were excluded. Although HRs for hospitalization and death did not differ greatly by treatment era, absolute rates of hospitalization were greater (1987-1999: 233.3/1,000; 2000-2012: 320.0/1,000 person years) and death were lesser (1987-1999: 46.3/1,000; 2000-2012: 36.8/1,000 person years) in the later treatment era among cases. Children with solid tumors were less likely to have a cancer-related hospitalization than were those with leukemia/lymphoma (RR 0.91, 95% CI 0.84-0.98). CONCLUSION: Even after excluding cancer-related diagnoses, children with cancer experience greater rates of hospitalization and death in all disease categories. Results may guide future toxicity mitigation initiatives and inform anticipatory guidance for families of children with cancer.
Entities:
Keywords:
Cancer; Cohort study; Hospitalization; Mortality; Pediatric; Population-based study
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