RESULTS
Demographic and clinical characteristics
During the study period, 31,961 of the patients were enrolled, including 15,156 (47.4%) males
and 16,805 (52.6%) females, for a male to female gender ratio of 0.9. Their median age upon
CHD diagnosis was 3.5 years and the age distribution at CHD diagnosis is shown in
Fig. 1
.
Heart failure (n = 4149; 13.0%) was the most common co-morbidity. There were 15,613
(48.9%) patients who underwent cardiac catheterizations and 6,051 (18.9%) who had comput-
ed tomography (CT) examinations while the CHD diagnosis was being established. The
Cancer Risk and Congenital Heart Disease
PLOS ONE | DOI:10.1371/journal.pone.0116844 February 23, 2015
4/13
RESULTSDemographic and clinical characteristicsDuring the study period, 31,961 of the patients were enrolled, including 15,156 (47.4%) malesand 16,805 (52.6%) females, for a male to female gender ratio of 0.9. Their median age uponCHD diagnosis was 3.5 years and the age distribution at CHD diagnosis is shown inFig. 1.Heart failure (n = 4149; 13.0%) was the most common co-morbidity. There were 15,613(48.9%) patients who underwent cardiac catheterizations and 6,051 (18.9%) who had comput-ed tomography (CT) examinations while the CHD diagnosis was being established. TheCancer Risk and Congenital Heart DiseasePLOS ONE | DOI:10.1371/journal.pone.0116844 February 23, 20154/13
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