Co-occurrence of developmental delays in a screening study of 4-year-old Finnish children

Area of Science:

• Developmental Psychology
• Pediatric Neurology

Background:

• Early detection of developmental delays is crucial for intervention.
• Understanding the prevalence and patterns of co-occurring delays informs targeted support.

Purpose of the Study:

• To investigate the severity and prevalence of co-occurring developmental delays in 4-year-old children.
• To analyze the rate of overlapping problems and identify sex differences in developmental delays.
• To discuss the implications of co-occurring developmental delays as an early risk factor.

Main Methods:

• A population study involving 434 children (196 males, 238 females) aged 4 years and 3 months.
• Utilized the 'Lene' test, a comprehensive neurodevelopmental screening tool.
• Assessed attention-behavioural, motor-perceptual, and language domains.

Main Results:

• Co-occurrence of attention-behavioural, motor-perceptual, and language delays can be identified at age 4.
• Isolated delays were typically mild, whereas co-occurring delays were predominantly moderate or severe.
• Males demonstrated more severe and frequent co-occurring developmental problems compared to females.

Conclusions:

• The study highlights the early emergence of co-occurring developmental delays, detectable by age 4.
• Severity of developmental delays is linked to the degree of overlap between different delay types.
• Sex differences in the prevalence and severity of co-occurring delays warrant further investigation and tailored interventions.