Background: Preterm infants are at greater risk of language delay. Early identification of language delay is essential to improve functional outcome in these children.
Aim: To examine the concurrent validity of Rescorla's Language Development Survey and the Bayley Scales of Infant and Toddler Development (Bayley-III) at 18months corrected age in preterm infants.
Study Design: Test accuracy study.
Participants: 189 preterm infants born <29weeks were assessed at 18months.
Outcome Measures: The Language Development Survey, a parent-reported screening instrument, was administered in French concurrently with the Language Scales of the Bayley-III. Receiver-Operating-Characteristics curves were used to determine optimal cut-off score on the Language Development Survey to identify Bayley-III score <85. Sensitivity, specificity, positive and negative predictive values, and κ coefficient were calculated.
Results: Using Rescorla's original cut-off scores of ≤10 words for boys and ≤24 for girls, sensitivity was 76% and 88% for boys and girls, respectively, and specificity was 73% and 52% for boys and girls, respectively, in identifying language delay as per the Bayley-III. The optimal threshold was ≤10 words for both boys and girls. In girls, lowering the cut-off score decreased sensitivity (79%), but improved specificity (82%), thus lowering the number of false-positives.
Conclusion: Our findings support using the Language Development Survey as an expressive language screener in preterm infants.
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http://dx.doi.org/10.1016/j.earlhumdev.2016.06.003 | DOI Listing |
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