The Brazilian-Portuguese version of the Sleep Hygiene Index (SHI): validity, reliability and association with depressive symptoms and sleep-related outcomes
Objective: To translate the Sleep Hygiene Index (SHI) to Brazilian Portuguese, to describe its psychometric properties and to show its association with sleep quality, daytime sleepiness, risk for sleep apnea and depressive symptoms. Methods: Thirty subjects participated in th...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Thieme Revinter Publicações Ltda.
2020-01-01
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| Series: | Sleep Science |
| Subjects: | |
| Online Access: | http://sleepscience.org.br/export-pdf/2704/v13n1a07.pdf |
| Summary: | Objective: To translate the Sleep Hygiene Index (SHI) to Brazilian Portuguese, to describe its
psychometric properties and to show its association with sleep quality, daytime sleepiness, risk
for sleep apnea and depressive symptoms. Methods: Thirty subjects participated in the cultural
adaptation and the item clarity evaluation. Twenty subjects answered the instrument in three different
time-points for test-retest reliability. Eighty adult workers completed the SHI, the Pittsburgh Sleep
Quality Index (PSQI), the Epworth Sleepiness Scale (ESS), the Beck Depression Inventory (BDI)
and the STOP-BANG (S-B). Results: SHI shows an acceptable internal consistency (Cronbach’s
α=0.75), as well as a high reproducibility (intraclass correlation=0.972, p<0.01). The three final
factors of confirmatory factor analysis extract an average of 48.22% of the total sample variance.
Worse sleep hygiene (higher SHI score) correlated with poor sleep quality (r=0.398, p<0.001),
excessive daytime sleepiness (r=0.406, p<0.001) and depressive symptoms (r=0.324, p=0.003). No
correlations with S-B were found. Conclusions: SHI presents satisfactory-to-optimal psychometric
properties. This instrument is useful for treatment planning and management of sleep hygiene
practices. Thus, it represents a reliable way of assessing sleep hygiene quantitatively in both research
and clinical settings. |
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| ISSN: | 1984-0659 1984-0063 |