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Choosing appropriate patient-reported outcomes instrument for glaucoma research: a systematic review of vision instruments

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Abstract

Purpose

To identify vision Patient-Reported Outcomes instruments relevant to glaucoma and assess their content validity.

Methods

MEDLINE, MEDLINE in Process, EMBASE and SCOPUS (to January 2009) were systematically searched. Observational studies or randomised controlled trials, published in English, reporting use of vision instruments in glaucoma studies involving adults were included. In addition, reference lists were scanned to identify additional studies describing development and/or validation to ascertain the final version of the instruments. Instruments’ content was then mapped onto a theoretical framework, the World Health Organization International Classification of Functioning, Disability and Health. Two reviewers independently evaluated studies for inclusion and quality assessed instrument content.

Results

Thirty-three instruments were identified. Instruments were categorised into thirteen vision status, two vision disability, one vision satisfaction, five glaucoma status, one glaucoma medication related to health status, five glaucoma medication side effects and six glaucoma medication satisfaction measures according to each instruments’ content. The National Eye Institute Visual Function Questionnaire-25, Impact of Vision Impairment and Treatment Satisfaction Survey-Intraocular Pressure had the highest number of positive ratings in the content validity assessment.

Conclusion

This study provides a descriptive catalogue of vision-specific PRO instruments, to inform the choice of an appropriate measure of patient-reported outcomes in a glaucoma context.

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Abbreviations

ADVS:

Activities of Daily Vision Scale

CIGTS:

Collaborative Initial Glaucoma Treatment Study

COMTOL:

Comparison of Ophthalmic Medications for Tolerability

EDSQ:

Eye Drop Satisfaction Questionnaire

GDI:

Glaucoma Disability Index

GHPI:

Glaucoma Health Perceptions Indices

GSS:

Glaucoma Symptom Scale

IVI:

Impact of Vision Impairment

IND-VFQ33:

Indian Visual Function Questionnaire 33

LVQOL:

Low Vision Quality Of Life Questionnaire

NEI-VFQ:

National Eye Institute Visual Function Questionnaire

OSDI:

Ocular Surface Disease Index

PRO:

Patient-Reported Outcomes

QOL:

Quality Of Life

QLVFQ:

Quality of Life and Vision Function Questionnaire

SQOL DVI:

Scale of QOL for Disease with Visual Impairment

SHPC:

Symptom and Health Problem Checklist

TSS-IOP:

Treatment Satisfaction Survey-Intraocular Pressure

VALDA:

Vision associated limitations in daily activities

VCM1:

Vision Core Measure 1

VAQ:

Visual Activities Questionnaire

WHO ICF:

World Health Organization International Classification of Functioning, Disability and Health

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Acknowledgments

We thank Peter Fayers (Department of Public Health, University of Aberdeen) for commenting on the draft; Manoharan Shunmugam (NHS Grampian), Konrad Pesudovs and Lynda Caudle (NHMRC Centre for Clinical Eye Research at Flinders Medical Centre, Adelaide) for initial data abstraction, and Cynthia Fraser (Health Services Research Unit, University of Aberdeen) for developing and running the literature search strategies. The Health Services Research Unit receives a core grant from the Chief Scientist Office of the Scottish Government Health Directorates. Jemaima Che Hamzah is funded by the Malaysian Ministry of Higher Education and Universiti Kebangsaan Malaysia. The views expressed are those of the authors and not necessarily those of the funding bodies.

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Che Hamzah, J., Burr, J.M., Ramsay, C.R. et al. Choosing appropriate patient-reported outcomes instrument for glaucoma research: a systematic review of vision instruments. Qual Life Res 20, 1141–1158 (2011). https://doi.org/10.1007/s11136-010-9831-1

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