Table 1.

Description of Danish Historic Birth Cohort sample

	Control	Autism
	n = 177	n = 98
	Mean ± SD	Mean ± SD	P value
Maternal age at birth	33.33 ± 5.15	33.53 ± 5.65	0.775
Paternal age at birth	35.30 ± 6.72	35.85 ± 7.44	0.552
Birth weight (g)	3516.81 ± 659.45	3524.55 ± 679.15	0.928
Gestational week at amniocentesis	14.89 ± 1.91	14.90 ± 1.48	0.953
Storage time (years)	14.90 ± 1.58	14.96 ± 1.69	0.770
APGAR score > 6	97%	96%