Examining the structure validity of the Pittsburgh Sleep Quality Index View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-04

AUTHORS

Yajun Jia, Siqi Chen, Nicolaas E. P. Deutz, Satish T. S. Bukkapatnam, Steven Woltering

ABSTRACT

The Pittsburgh Sleep Quality Index (PSQI) is a widely used measurement tool for assessing sleep disturbance and is broadly used in clinical and healthy populations. Yet, validation of the PSQI has rarely been carried out for a relatively large non-clinical sample in the United States. The aim for the current study is to examine the structure validity of the PSQI. Data from 2189 individuals (mean age 35.88) were analyzed by exploratory factor analysis (EFA) followed by confirmatory factor analysis (CFA). Furthermore, measurement invariance across age groups was examined using multigroup CFA. We found that a three-factor model (i.e., sleep efficiency, sleep latency, and sleep quality) fitted better than the commonly used single-factor structure. Specifically, for the three-factor model, the comparative fit index was 0.99, the Tucker–Lewis fit index was 0.99, and the root-mean-square error of approximation was 0.04. Those fit indices further indicated a good fit between the model and the observed data. Measurement invariance results suggested that the factor structure of PSQI is not comparable for different age groups, which has implications for future research studies. Our findings validated the factor structure of the PSQI on non-clinical populations and recommended the use of three separate factors to assess sleep quality. In addition, the findings demonstrated that different models should be used to assess sleep disturbance across age groups. However, further research is required to determine the appropriate cut-off points for different age groups. More... »

PAGES

209-221

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s41105-018-00201-0

DOI

http://dx.doi.org/10.1007/s41105-018-00201-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1110556373


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    "description": "The Pittsburgh Sleep Quality Index (PSQI) is a widely used measurement tool for assessing sleep disturbance and is broadly used in clinical and healthy populations. Yet, validation of the PSQI has rarely been carried out for a relatively large non-clinical sample in the United States. The aim for the current study is to examine the structure validity of the PSQI. Data from 2189 individuals (mean age 35.88) were analyzed by exploratory factor analysis (EFA) followed by confirmatory factor analysis (CFA). Furthermore, measurement invariance across age groups was examined using multigroup CFA. We found that a three-factor model (i.e., sleep efficiency, sleep latency, and sleep quality) fitted better than the commonly used single-factor structure. Specifically, for the three-factor model, the comparative fit index was 0.99, the Tucker\u2013Lewis fit index was 0.99, and the root-mean-square error of approximation was 0.04. Those fit indices further indicated a good fit between the model and the observed data. Measurement invariance results suggested that the factor structure of PSQI is not comparable for different age groups, which has implications for future research studies. Our findings validated the factor structure of the PSQI on non-clinical populations and recommended the use of three separate factors to assess sleep quality. In addition, the findings demonstrated that different models should be used to assess sleep disturbance across age groups. However, further research is required to determine the appropriate cut-off points for different age groups.", 
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Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/s41105-018-00201-0'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/s41105-018-00201-0'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/s41105-018-00201-0'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s41105-018-00201-0'


 

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