TABLE 5

Distribution of Neurobehavioral Impairments in the EP/ELBW and T/NBW Cohorts Judged According to the T/NBW and Test Normative Distributions

OutcomeEP/ELBW (n = 175) T/NBW (n = 169)
T/NBW distributiona
 No impairment29.1 (51)58.6 (99)
 1 impairment24.0 (42)25.4 (43)
 2 impairments18.3 (32)7.7 (13)
 3 impairments16.0 (28)4.7 (8)
 4 impairments7.4 (13)1.8 (3)
 5 impairments5.1 (9)1.8 (3)
Test normsb
 No impairment44.6 (78)69.8 (118)
 1 impairment22.8 (40)21.3 (36)
 2 impairments16.6 (29)4.7 (8)
 3 impairments6.8 (12)1.8 (3)
 4 impairments6.3 (11)1.2 (2)
 5 impairments2.9 (5)1.2 (2)
  • Data are presented as % (n).

  • a χ2 (linear trend) = 38.4, P < .0001.

  • b χ2 (linear trend) = 37.7, P < .0001.