Psychometric properties of the Spanish version of the Sleep Hygiene Index

The Sleep Hygiene Index (SHI) has shown adequate psychometric properties in samples from several countries but not been validated Spanish. aims of the study were to translate original (i.e., English) version SHI into Spanish and evaluate this instrument factor structure, internal consistency reliability, concurrent, predictive, discriminant validity) adults. overall sample, comprising 548 university students, was divided two groups based on their self-reported insomnia symptoms (Insomnia Severity Index) because sleep hygiene be closely related insomnia. Pittsburgh Quality Stanford Sleepiness Scale used for testing concurrent validity. Depression, Anxiety, Stress predictive Three items dropped scale due low loadings. principal component analysis revealed a four-factor solution SHI, accounting 65.58% total variance 65.34% noninsomnia group, 63.50% group. Factor 1 comprised regarding sleep-disrupting behaviors; 2 cognitive activation; 3 about bedroom comfort; 4 sleep/wake time. Omega coefficient indices ranged 0.751 0.878 0.734 0.822 0.724 0.835 can regarded as reliable tool with validity assessing people or without symptoms.