Table 1

Patient characteristics

	Non-critical aortic stenosis	Critical aortic stenosis	P value
Patients (n)	42	65
Gestational age, median (range), weeks	40 (35–42)	39 (26–42)	0.022*
Gender, male/female	33/9	52/13	0.858†
Birth weight, mean (SD), kg	3.6 (0.66)	3.3 (0.76)	0.01‡
Age at diagnosis, median (range), days	2 (0–20)	1 (0–7)	0.315*
Age at first treatment, median (range), days	8 (1–26)	5 (0–26)	0.004*
Follow-up time, median (range), years	14.6 (1–26)	13.0 (1–26)	0.314*