Risk for ASD in Preterm Infants: A Three-Year Follow-Up Study

Table 4

Medical and developmental characteristics of preterm children with positive versus negative screening for autism spectrum disorder.

	Children with positive screening	Children with negative screening	Group differences
Gestational age (weeks) (n=100)
M (SD), range	30.34 (2.77), 24.71-34	31.74 (2.35), 24.29-34	PS < NS
Birth weight (grams) (n=100)
M (SD), range	1352.16 (470.46), 510-2284	1661.22 (444.23), 490-2400	PS < NS
MSEL 18 months (n=100)
M (SD), range	88.44 (10.98), 70-122	98.72 (11.77), 69-126	PS < NS
MSEL 24 months (n=96)
M (SD), range	95.94 (14.06), 61–118	109.81 (14.51), 65–139	PS < NS
MSEL 36 months (n=94)	103.03 (18.58), 49–137
M (SD), range		115.03 (13.47), 70–141	PS < NS

Note. MSEL: Mullen Scales of Early Learning, PS: positive screening, and NS: negative screening. p <. 05, p < .01.