Table 6.

Unadjusted Correlations Between Developmental Test Scores at Three Years of Age and Cumulative Proportion of Total Days With MEE in the First Year of Life,* According to Socioeconomic Index

CharacteristicNo. of ParticipantsTest Scores
Formal TestsConversational Samples
McCarthy GCIMcCarthy SubscalesPPVT-RNDWMLUmPCC-R
VerbalPercep PerfQuant
r Values
Socioeconomic index
 Medicaid <high school15 –18−.01−.12.19.00.18.13.02−.07
 Medicaid ≥high school56 –59−.01−.04−.05.10.03−.01−.02−.04
 Private insurance <college113 –115−.24§−.24§−.21§−.12−.28§.03−.07−.06
 Private insurance ≥college44 −.26−.35§−.02−.08−.37§−.25−.22−.06
All participants combined233 –241−.17−.21−.11−.06−.16§−.04−.08−.07
  • Percep Perf indicates Perceptual Performance; Quant, Quantitative.

  • * First year of life denotes the age period 2 to 12 months.

  • Socioeconomic index consists of health insurance status as the primary element and maternal education as the secondary element. Socioeconomic index was not determinable for 5 children: 4 of the children had no health insurance, and for 1 child, information on maternal education was missing.

  • A score on every test was not available for every participant.

  • § P < .05.

  • P < .01.