Table 1.

Description of the COCCINELLE cohort, 2000–2015

	Patients with cancer n=59	Patients without cancer n=17 045
Demographics
Male, N (%)	34 (57.6)	8702 (51.1)
Median age (in year) at first CC procedure (IQR)	2.6 (9.9)	2.2 (7.4)
Median age (in year) at exit (IQR)	7.4 (10.4)	10.9 (9.3)
Age at first CC procedure, N (%)
<1 year	24 (40.7)	6589 (38.7)
1–5 years	12 (20.3)	4206 (24.7)
5–10 years	8 (13.6)	3216 (18.9)
10–15 years	15 (25.4)	3034 (17.8)
Birth period, N (%)
(1980, 1990)	2 (3.4)	484 (2.8)
(1990, 2000)	20 (33.9)	4273 (25.1)
(2000, 2010)	31 (52.5)	9511 (55.8)
(2010, 2013)	6 (10.2)	2777 (16.3)
Number of CC procedures received by children, N (%)
1 procedure	44 (74.6)	13 929 (81.7)
2 procedures	7 (11.9)	2021 (11.9)
≥3 procedures	8 (13.6)	1095 (6.4)

CC, cardiac catheterisation; IQR, Interquartile range.