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. Author manuscript; available in PMC: 2018 Apr 20.
Published in final edited form as: Pediatr Res. 2017 Jun 21;82(4):614–619. doi: 10.1038/pr.2017.82

Table 2. Percent of children with each cognitive function profile based on IQ and EF, by gestational age.

Cognitive Function Profile
Gestational age N Normal Low Normal Moderately Impaired Severely Impaired
23-24 weeks 180 23 39 21 17
25-26 weeks 395 33 42 18 7
27 weeks 298 43 41 13 3

Distribution of cognitive profiles significantly differ by gestational age, chi-square p < 0.001