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. 2023 Dec;9(6):925-932.
doi: 10.1016/j.sleh.2023.08.001. Epub 2023 Sep 26.

Multidimensionality of the PROMIS sleep disturbance 8b short form in working adult populations

Rebecca M Brossoit  1 , Hannah P Stark  2 , Tori L Crain  3 , Todd E Bodner  3 , Leslie B Hammer  4 , Cynthia D Mohr  3 , Steven A Shea  4
Affiliations

Multidimensionality of the PROMIS sleep disturbance 8b short form in working adult populations

Rebecca M Brossoit et al. Sleep Health. 2023 Dec.

Abstract

Objectives: The Patient-Reported Outcomes Measurement Information System sleep disturbance measures were developed using item response theory assumptions of unidimensionality and local independence. Given that sleep health is multidimensional, we evaluate the factor structure of the Patient-Reported Outcomes Measurement Information System sleep disturbance 8b short form to examine whether it reflects a unidimensional or multidimensional construct.

Methods: Six full-time working adult samples were collected from civilian and military populations. Exploratory and confirmatory factor analyses were conducted. Single-factor and two-factor models were performed to evaluate the dimensionality of sleep disturbance using the 8b short form. Sleep duration and subjective health were examined as correlates of the sleep disturbance dimensions.

Results: Across six working adult samples, single-factor models consistently demonstrated poor fit, whereas the two-factor models, with insomnia symptoms (ie, trouble sleeping) and dissatisfaction with sleep (ie, subjective quality of sleep) dimensions demonstrated sufficient fit that was significantly better than the single-factor models. Across each sample, dissatisfaction with sleep was more strongly correlated with sleep duration and subjective health than insomnia symptoms, providing additional evidence for distinguishability between the two sleep disturbance factors.

Conclusions: In working adult populations, the Patient-Reported Outcomes Measurement Information System sleep disturbance 8b short form is best modeled as two distinguishable factors capturing insomnia symptoms and dissatisfaction with sleep, rather than as a unidimensional sleep disturbance construct.

Keywords: Dissatisfaction with sleep; Insomnia symptoms; Psychometrics; Sleep disturbance.

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Conflict of interest statement

Declaration of conflict of interest Drs Brossoit, Crain, Hammer, Bodner, & Mohr report grants from the Department of Defense, during the conduct of the study. Drs Brossoit and Crain report grants from the Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, during the conduct of the study. Dr Shea and Hannah P. Stark have nothing to disclose.

Figures

Figure 1.
Figure 1.. The two-dimensional factor structure of the PROMIS sleep disturbance 8b short form.
Response options for all items are on five-point Likert scales. Response options for items 1–4 range from “Not at All” to “Very Much”; response options for items 5–7 range from “Never” to “Always”; response options for item 8 range from “Very Poor” to “Very Good”
See this image and copyright information in PMC

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