Psychometric Analysis of the SPEED Questionnaire and CLDEQ-8

Investigative Ophthalmology & Visual Science
Andrew D PuckerSruthi Srinivasan

Abstract

This study reports on the ability of the Standard Patient Evaluation of Eye Dryness (SPEED) questionnaire to detect dry eye (DE) symptoms in contact lens (CL) and non-CL wearers. The SPEED questionnaire was administered to all subjects while the Contact Lens Dry Eye Questionnaire-8 (CLDEQ-8) was only administered to CL wearers. Tear meniscus heights (TMH) were measured, and the phenol red thread (PRT) test was conducted. These tests along with self-reported DE were used to identify subjects with dry eye disease (DED). Rasch analysis was performed to evaluate the questionnaires for measurement precision and unidimensionality, and the scores from these Rasch analyses were used to understand their ability to predict measures of DED. We enrolled 284 subjects (150 CL and 134 non-CL wearers). Mean subject age was 39.4 ± 14.2 years. Rasch analysis yielded a multidimensional short form of the SPEED questionnaire (8-items) and a unidimensional short form of the CLDEQ-8 (4-item). Scores from both questionnaires were significantly associated with self-reported DE in CL and non-CL wearers. Scores of the 8-item SPEED questionnaire were associated with DED status in non-CL wearers but not in CL wearers while 4-item CLDEQ scores were associat...Continue Reading

References

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Citations

Jul 3, 2020·Clinical Optometry·Andrew D Pucker, Anna A Tichenor
Jul 14, 2020·Ocular Immunology and Inflammation·Bernd WillemsMarkus Zumbansen
Feb 26, 2020·Eye & Contact Lens·Kim DuongAndrew D Pucker
Dec 17, 2020·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Andrew D PuckerChris Lievens
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·James S WolffsohnFiona Stapleton
Apr 9, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Etty BittonWalter Wittich
Aug 16, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Alessio Facchin, Laura Boccardo

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