Table 4.

Association between age, complexity of CHD, and gender with number of comorbidities.

	Incidence Rate Ratio	95% Confidence Interval	p
Age (in years)	1.030	1.026–1.033	<0.001
Male	0.983	0.909–1.062	0.658
Moderate CHD	1.245	1.132–1.370	<0.001
Severe CHD	1.351	1.210–1.509	<0.001
Biventricular CHD	0.793	0.677–0.928	0.004

CHD, congenital heart disease.