Display Settings:

Format

Send to:

Choose Destination
J Pediatr. 2012 Apr;160(4):553-8. doi: 10.1016/j.jpeds.2011.09.047. Epub 2011 Nov 1.

Relationship between test scores using the second and third editions of the Bayley Scales in extremely preterm children.

Author information

  • 1Research Department of Academic Neonatology, UCL Institute for Women's Health, University College London, London, UK.

Abstract

OBJECTIVE:

To define the relationship between current Bayley Scales of Infant and Toddler Development, Third edition (Bayley-III) scores and the Bayley Scales of Infant Development, second edition Mental Development Index (MDI) to aid the comparison of population outcomes.

STUDY DESIGN:

MDI and Bayley-III cognitive/language scales were administered concurrently in 185 extremely preterm children (≤26 weeks) at 29-41 months of age. Cognitive and language scores were combined (combined Bayley-III score [CB-III scores]) for comparison with MDI scores.

RESULTS:

Bayley-III cognitive and language scores were 10 and 3 points higher than MDI scores, respectively; CB-III scores were 7 points higher. The relationship between CB-III and MDI scores was not a simple offset: CB-III values were increasingly higher than MDI at lower scores. Bayley-III scores underidentified MDI scores <70 (sensitivity 58%; specificity 100%). An algorithm for converting Bayley-III scores into MDI scores improved predictive value (sensitivity 95%; specificity 97%). Bayley-III scores <80 were similarly predictive (sensitivity 89%; specificity 99%).

CONCLUSIONS:

We recommend caution in the interpretation of Bayley-III scores in population studies as the correlation with the previous edition appears worse at lower test score values and the predictive value for IQ is as yet unclear.

Copyright © 2012 Mosby, Inc. All rights reserved.

Comment in

PMID:
22048046
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk