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16-04-2018 | Uitgave 7/2018 Open Access

Quality of Life Research 7/2018

Validation of the PROMIS Sleep Disturbance and Sleep-Related Impairment item banks in Dutch adolescents

Tijdschrift:
Quality of Life Research > Uitgave 7/2018
Auteurs:
Jojanneke A. M. C. van Kooten, Raphaёle R. L. van Litsenburg, Whitney R. Yoder, Gertjan J. L. Kaspers, Caroline B. Terwee

Abstract

Purpose

Sleep problems are common in adolescents and have a negative impact on daytime functioning. However, there is a lack of well-validated adolescent sleep questionnaires. The Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep Disturbance and Sleep-Related Impairment item banks are well-validated instruments developed for and tested in adults. The aim of this study was to evaluate their structural validity in adolescents.

Methods

Test and retest data were collected for the Dutch–Flemish V1.0 PROMIS Sleep Disturbance (27) and Sleep-Related Impairment (16 items) item banks from 1046 adolescents (11–19 years). Cross-validation methods, Confirmatory (CFA), and Exploratory Factor Analyses (EFA) were used. Fit indices and factor loadings were used to improve the models. The final models were assessed for model fit using retest data.

Results

The one-factor Sleep Disturbance (CFI = 0.795, TLI = 0.778, RMSEA = 0.117) and Sleep-Related Impairment (CFI = 0.897, TLI = 0.882, RMSEA = 0.156) models could not be replicated in adolescents. Cross-validation resulted in a final Sleep Disturbance model of 23 and a Sleep-Related Impairment model of 11 items. Retest data CFA showed adequate fit for the Sleep-Related Impairment-11 (CFI = 0.981, TLI = 0.976, RMSEA = 0.116). The Sleep Disturbance-23 model fit indices stayed below the recommended values (CFI = 0.895, TLI = 0.885, RMSEA = 0.105).

Conclusions

While the PROMIS Sleep Disturbance-23 for adolescents and PROMIS Sleep-Related Impairment-11 for adolescents provide a framework to assess adolescent sleep, additional research is needed to replicate these findings in a larger and more diverse sample.

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Special Section: Test Construction (by invitation only)

Fit for purpose and modern validity theory in clinical outcomes assessment