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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Child Neuropsychol. 2011 Jul;17(4):347–367. doi: 10.1080/09297049.2010.544647

Table 2.

Means, Standard Deviations, and the Results of MANOVA Analyses on Neonatal and Demographic Characteristics of Participants and Non-participants.

Participant (n = 56) Non-Participant (n = 44) F d.f. p-value Effect Size
Mean SD Mean SD
BW 944.57 198.12 970.55 185.79 0.447 98 .505 .005
GA 27.79 2.03 27.73 1.83 0.025 98 .876 <.001
IVH Grade 0.71 1.14 0.61 1.20 0.183 98 .670 .002
HCT Mean 41.26 5.22 38.94 4.55 5.439 98 .022 .053
Vent 22.32 23.70 23.45 28.61 0.047 98 .829 <.001
Apnea 30.18 31.64 26.25 27.37 0.427 98 .515 .004
SNAP1 14.33 8.32 13.89 7.42 0.076 97 .784 .001
SNAP2 10.20 6.61 10.23 6.70 <.001 97 .984 <.001

Note. Birth weight (BW), Gestational Age (GA), Intraventricular Hemorrhage (IVH), Vent (Days on Ventilator), Apnea (Number of Apnea episodes requiring stimulation), Score for Neonatal Acute Physiology Day of Life 0 (SNAP1), Score for Neonatal Acute Physiology Week 1 Average (SNAP2). Effect sizes are generated Partial Eta Squared values.