A Validation Study of PROMIS Sleep Disturbance (PROMIS-SD) and Sleep Related Impairment (PROMIS-SRI) Item Banks in Individuals with Idiopathic Parkinson’s Disease and Matched Controls

Article type: Research Article

Authors: Jones, Jolynn^{a; *} | Nielson, Spencer A.^a | Trout, Jonathan^b | Swenson, Mckaella^a | Reiley, Joseph^c | Tanner, Jared^d | Bowers, Dawn^d | Kay, Daniel B.^a

Affiliations: [a] Department of Psychology, Brigham Young University, Provo, UT, USA | [b] Long School of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA | [c] University of Utah School of Medicine, Salt Lake City, UT, USA | [d] Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA

Correspondence: [*] Correspondence to: Jolynn Jones, BS, 1001 KMBL, Provo, UT, 84602 USA. Tel.: +1 801 866 5427; E-mail: [email protected].

Abstract: Background:Parkinson’s disease (PD) is associated with sleep disturbance (SD) and sleep-related impairment (SRI). Validation of self-report measures of these problems is needed in PD. The Patient-Reported Outcomes Measurement Information System (PROMIS) includes tools that assess these problems (PROMIS-SD and PROMIS-SRI, respectively). Objective:This study aimed to further validate these measures in individuals with PD and matched controls. Methods:Individuals with early-stage PD (n=50) and matched controls (n=48) completed measures of SD including the PROMIS-SD, Pittsburgh Sleep Quality Index (PSQI), and Insomnia Severity Index (ISI). They also completed measures of daytime impairment including the PROMIS-SRI, Epworth Sleepiness Scale, State-Trait Anxiety Inventory, Beck Depression Inventory 2nd edition, and Parkinson’s Disease Questionnaire-39. Internal consistency for the PROMIS measures were assessed using Cronbach’s α coefficient and item-total correlations in the total sample. Convergent and divergent validity of the PROMIS item banks were assessed using Spearman correlations. Results:The PROMIS item banks had excellent internal consistency (α>0.94). Supporting convergent validity, the PROMIS-SD had strong correlations with other measures of SD (ρ>0.68, for PSQI and ISI) and the PROMIS-SRI had moderate to strong correlations with all measures of daytime impairment (ρ=0.41–0.72). Supporting divergent validity within the PD group, the PROMIS-SD correlated more strongly with SRI than with the Parkinson’s Disease Questionnaire total score, a metric of PD related impairment. Conclusion:In middle-aged and older adults, with and without early-stage PD, the PROMIS-SD and PROMIS-SRI are reliable and valid measures of SD and SRI, respectively.

Keywords: Parkinson’s disease, sleep, validation study, patient-reported outcome measures

DOI: 10.3233/JPD-202429

Journal: Journal of Parkinson's Disease, vol. 11, no. 2, pp. 877-883, 2021