Sleep duration from infancy to adolescence: reference values and generational trends.

@article{Iglowstein2003SleepDF,
  title={Sleep duration from infancy to adolescence: reference values and generational trends.},
  author={Ivo Iglowstein and Oskar G. Jenni and Luciano Molinari and Remo H. Largo},
  journal={Pediatrics},
  year={2003},
  volume={111 2},
  pages={
          302-7
        }
}
OBJECTIVE The main purpose of the present study was to calculate percentile curves for total sleep duration per 24 hours, for nighttime and for daytime sleep duration from early infancy to late adolescence to illustrate the developmental course and age-specific variability of these variables among subjects. METHODS A total of 493 subjects from the Zurich Longitudinal Studies were followed using structured sleep-related questionnaires at 1, 3, 6, 9, 12, 18, and 24 months after birth and then… 

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