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Modifying a language screening tool for three-year-old children identified severe language disorders six months
Laleh Nayeb1, Dagmar Lagerberg2, Monica Westerlund2
1Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
Aim:
We examined if routine Swedish language screening for developmental language disorder (DLD) carried out at three years of age could be performed as effectively six months earlier.
Methods:
This study observed 105 monolingual Swedish-speaking children (53% boys) aged 29-31 months at three Swedish child health centres. We compared their ability to combine three words, as per the existing protocol, and two words. They also underwent a comprehension task. Speech and language pathologists clinically assessed the children for DLD and their results were compared with the nurse-led screening.
Results:
The results for the three-word and two-word criterion were the following: sensitivity (100% versus 91%) specificity (81% versus 91%), positive predictive (38% versus 56%) and negative predictive value (100% versus 99%). The three-word criterion identified 29 children with possible DLD, including 11 cases later confirmed, and the two-word criterion identified 18 possible cases, including 10 confirmed cases. DLD was overrepresented in the 10% of children who did not cooperate with the nurse-led screening.
Conclusion:
Changing the required word combinations from three to two words worked well. The three-word test identified one extra confirmed case, but resulted in 10 more false positives. Lack of cooperation during screening constituted an increased risk for DLD.
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