A population-based nested case control study on recurrent pneumonias in children with severe generalized cerebral palsy: ethical considerations of the design and representativeness of the study sample

Table 2 Aetiology of disabilities

	n	%
Congenital diseases
Miller Dieker Syndrome / lissencephaly	7
corpus callosum agenesis	5
Cornelia de Lange syndrome	2
Walker-Warburg syndrome	2
unspecified abnormal brain development	16
other non progressive syndromes	6
other chromosomal abnormalities	9
Rett syndrome	3
Alpers syndrome	4
Aicardi-Goutieres syndrome	2
other progressive syndromes	5
other congenital diseases	4
	65	33.5
Pre and perinatal complications
perinatal asphyxia	18
cerebral palsy e.c.i.	13
cerebral haemorrhage	6
intra uterine CMV infection	5
other infections	4
other causes	7
	53	27.3
Acquired
meningitis / encephalitis	5
Trauma	3
near drowning accident	2
Other	2
	12	6.2
Combinations of causes
congenital and acquired disease	6
congenital disease and perinatal complications	5
perinatal and acquired	3
perinatal and hereditary progressive	1
	15	7.7
Unknown cause
	25	12.8
Missing
	24	12.3
	Total 194 children

ISSN: 1471-2431