Table 1.

Population description

Characteristics	Patients (national except Paris Region) n = 4048	Patients (Paris Region) n = 7294
Age (years), median	7	6
(Minimum-maximum)	(0–55)	(0–55)
Sex, n =	4015	7192
Male	2160 (53.8)	3569 (49.6)
Female	1855 (46.2)	3623 (50.4)
Abnormalities diagnosed antenatally, n=	3290	4989
No	2148 (65.3)	3509 (70.3)
Yes	1142 (34.7)	1480 (29.7)
Other diagnoses, n	520	462