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Mortality in Swedish patients with Hirschsprung disease
Anna Löf Granström1,2, Tomas Wester3,4
1Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden. anna.lof@ki.se.
Purpose:
Hirschsprung disease (HSCR) has previously been associated with increased mortality. The aim of this study was to assess mortality in patients with Hirschsprung disease in a population-based cohort.
Methods:
This was a nationwide, population-based cohort study. The study exposure was HSCR and the study outcome was death. The cohort included all individuals with HSCR registered in the Swedish National Patient Register between 1964 and 2013 and ten age- and sex-matched controls per patient, randomly selected from the Population Register. Mortality and cause of death were assessed using the Swedish National Causes of Death Register.
Results:
The cohort comprised 739 individuals with HSCR (565 male) and 7390 controls (5650 male). Median age of the cohort was 19 years (range 2-49). Twenty-two (3.0%) individuals with HSCR had died at median age 2.5 years (range 0-35) compared to 49 (0.7%) controls at median age 20 years (0-44), p < 0.001. Hazard ratio for death in HSCR patients compared to healthy controls was 4.77 (confidence interval (CI) 95% 2.87-7.91), and when adjusted for Down syndrome, the hazard ratio was 3.6 (CI 95% 2.04-6.37).
Conclusions:
The mortality rate in the HSCR cohort was 3%, which was higher than in controls also when data were adjusted for Down syndrome.
