Children's sleep patterns from 0 to 9 years: Australian population longitudinal study

Area of Science:

• Pediatric Sleep Science
• Developmental Psychology
• Public Health Research

Background:

• Accurate, age-specific sleep normative data is essential for identifying sleep issues in children.
• Previous data may not reflect current sleep patterns in the Australian pediatric population.

Purpose of the Study:

• To establish precise population normative data for cross-sectional, age-specific sleep patterns in Australian children aged 0-9 years.
• To provide benchmarks for assessing typical sleep duration, onset, and wake times.

Main Methods:

• Utilized data from the first three waves of the Longitudinal Study of Australian Children (LSAC).
• Included two cohorts recruited in 2004 (ages 0-1 and 4-5 years), assessed biennially.
• Parents prospectively completed 24-hour time-use diaries, recording sleep and napping in 15-minute intervals.

Main Results:

• Total 24-hour sleep duration decreased from a mean of 14 hours at 4-6 months to 10 hours at 9 years.
• Sleep onset times progressively delayed from 8:00 PM to 9:00 PM; daytime sleep declined significantly.
• Marked variations in sleep duration, onset, and wake times were observed across all ages in this healthy population.

Conclusions:

• New centile charts provide valuable tools for parents and professionals to assess the normalcy of children's sleep.
• These population parameters will inform future research on optimal sleep patterns and their impact on child and parent well-being.