Do parent-reported early indicators predict later developmental language disorder? A Raine Study investigation.

Area of Science:

• Child development
• Neurodevelopmental disorders
• Speech and language pathology

Background:

• Developmental language disorder (DLD) is a common neurodevelopmental condition, but early identification is challenging due to variable language development in young children.
• Caregivers are often empowered with early indicators by regulatory bodies to aid in DLD identification.
• Existing methods for early DLD identification rely on parent-reported indicators, which may have limitations.

Purpose of the Study:

• To investigate the predictive relationship between parent-reported early indicators and the likelihood of children meeting DLD diagnostic criteria at age 10.
• To assess if a cumulative risk index of early indicators or sex moderates DLD diagnosis.
• To evaluate the effectiveness of current early identification strategies for DLD.

Main Methods:

• Utilized data from the prospective Raine Study, including 1626 children (104 with DLD, 1522 without).
• Transformed data into 11 predictor variables reflecting early DLD indicators from birth to 3 years, including communication milestones and family history.
• Planned regression analyses to examine the predictive power of these indicators on DLD diagnosis at age 10.

Main Results:

• No single parent-reported early indicator significantly predicted DLD at age 10.
• A cumulative risk index of combined predictors did not significantly predict DLD (OR = 0.95, CI = 0.85-1.09, p = 0.447).
• Sex did not significantly moderate the risk of DLD at age 10 (OR = 0.89, CI = 0.59-1.32, p = 0.563).

Conclusions:

• Parent reports of early DLD indicators are widely used but may not reliably identify children at risk.
• The Raine Study data suggest potential retrospective reporting bias in previous studies.
• Clinical implications indicate that 'red flags' alone may be insufficient; combining them with linguistic assessments and functional impact evaluations is recommended for effective DLD identification and intervention.