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Comparison of the developmental tests Bayley-III and Bayley-II in 7-month-old infants born preterm.
MedLine Citation:
PMID:  23224346     Owner:  NLM     Status:  Publisher    
The study aims on comparing Bayley Scales of infant development third (Bayley-III) and Bayley second (Bayley-II) edition with special focus on patterns in the first year of life. Fifty-five premature infants (43 with low birth weight/LBW >1,499 g and 12 with very/extremely low birth weight/VLBW/ELBW <1,500 g) aged 7 months (corrected for prematurity) were assessed with the complete Bayley-III. From this assessment, Bayley-II results were retrospectively estimated. Bayley-III results were compared to the expected mean with one-sample t-tests. The mean scores of both editions were compared with the aid of paired-sample t-tests. Pearson correlations between subscales and editions were analysed. The Bayley-III cognitive score of the study group was significantly higher than the expected mean of the standardization sample. VLBW/ELBW had significantly lower motor scores than LBW in both editions. When compared to estimated Bayley-II scores, all relevant Bayley-III scores were significantly higher (all p < .01) with highest difference (ten points) between the motor scales of both editions. There were significant correlations not only between Bayley-III cognitive and language scales but also between language and motor scales. Given the strong association between motor and cognitive behaviour in early infancy, this age-specific pattern is heightening the risk of failure to identify infants at risk for both cognitive and motor delay. Therefore, assessment of infants should comprise all subscales. Since Bayley-III probably overestimates especially motor performance in young infants, when interpreting Bayley-III scores in this age, comparison groups are highly recommended until further validation of normative data are outstanding.
Gitta Reuner; Anna Christine Fields; Andrea Wittke; Martin Löpprich; Joachim Pietz
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-8
Journal Detail:
Title:  European journal of pediatrics     Volume:  -     ISSN:  1432-1076     ISO Abbreviation:  Eur. J. Pediatr.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7603873     Medline TA:  Eur J Pediatr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Neuropediatrics, University Children's Hospital of Heidelberg, Im Neuenheimer Feld 430, 69120, Heidelberg, Germany,
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