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Pediatrics. 2005 Jan;115(1 Suppl):257-65.

The relationship between reported sleep quality and sleep hygiene in Italian and American adolescents.

Author information

  • 1Department of Psychiatry and Human Behavior, Sleep and Chronobiology Research Laboratory, E. P. Bradley Hospital/Brown Medical School, Providence, Rhode Island 02915, USA. monique_lebourgeois@brown.edu.

Abstract

OBJECTIVE:

The purpose of the study was to examine the relationship between self-reported sleep quality and sleep hygiene in Italian and American adolescents and to assess whether sleep-hygiene practices mediate the relationship between culture and sleep quality.

METHODS:

Two nonprobability samples were collected from public schools in Rome, Italy, and Hattiesburg, Mississippi. Students completed the following self-report measures: Adolescent Sleep-Wake Scale, Adolescent Sleep Hygiene Scale, Pubertal Developmental Scale, and Morningness/Eveningness Scale.

RESULTS:

The final sample included 776 Italian and 572 American adolescents 12 to 17 years old. Italian adolescents reported much better sleep hygiene and substantially better sleep quality than American adolescents. A moderate-to-strong linear relationship was found between sleep hygiene and sleep quality in both samples. Separate hierarchical multiple regression analyses were performed on both samples. Demographic and individual characteristics explained a significant proportion of the variance in sleep quality (Italians: 18%; Americans: 25%), and the addition of sleep-hygiene domains explained significantly more variance in sleep quality (Italians: 17%; Americans: 16%). A final hierarchical multiple regression analysis with both samples combined showed that culture (Italy versus United States) only explained 0.8% of the variance in sleep quality after controlling for sleep hygiene and all other variables.

CONCLUSIONS:

Cross-cultural differences in sleep quality, for the most part, were due to differences in sleep-hygiene practices. Sleep hygiene is an important predictor of sleep quality in Italian and American adolescents, thus supporting the implementation and evaluation of educational programs on good sleep-hygiene practices.

PMID:
15866860
[PubMed - indexed for MEDLINE]
PMCID:
PMC3928632
Free PMC Article

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