Overall and age- and sex-stratified crude and adjusted HRs of mortality risk for patients with CAA and CHD.

Abbreviations: CHD, congenital heart disease; CAA, congenital airway anomaly; HR, hazard ratio; CI, confidence interval. aHRs adjusted for gender, age at CHD diagnosis, and other ECA. bHRs adjusted for age at CHD diagnosis and other ECA cHRs adjusted for gender and other ECA. dNeonate, newborn to ≤ 28 days of life; infant, >28 days but < 12 months; toddler & preschool, aged 1–5 years. Overall and age- and sex-stratified crude and adjusted HRs of mortality risk for patients with CAA and CHD.