© 2002 British Journal of Ophthalmology
VALUE BASED OPHTHALMOLOGY
Quality of care from the perspective of the cataract patient: the reliability and validity of the QUOTE-Cataract
Series editors: G and M Brown
1 Eye Research Institute Maastricht (ERIM), Netherlands
2 The Maastricht Health Research Institute for Prevention and Care (HEALTH), Netherlands
3 Netherlands Institute for Health Services Research (NIVEL), Netherlands
4 The Rotterdam Eye Hospital, Netherlands
5 Department of Ophthalmology, University Hospital Groningen, Netherlands
6 Department of Health Education, Maastricht University, Netherlands
7 Department of Ophthalmology, University Hospital Maastricht, Netherlands
Correspondence to:
Correspondence to:
Marjan D Nijkamp, Eye Research Institute Maastricht, PO Box 5800, 6202 AZ Maastricht, Netherlands;
MNij{at}SOOG.azm.nl
Background/aims: To assess reliability and validity of the QUOTE-cataract, a questionnaire that measures the quality of care from the perspective of cataract patients.
Methods: The QUOTE-cataract was tested in a multicentre study among 540 cataract patients in three different hospitals. Reliability was represented by internal consistency (Cronbach’s 
), and repeatability (intraclass correlation coefficient (ICC)). Validity was evaluated qualitatively and by factor analyses.
Results: A strong internal consistency coefficient (0.89), and high repeatability (ICC = 0.76) demonstrated good reliability. Content validity was assured by involvement of patients in the development of the questionnaire. Factor analysis confirmed an underlying taxonomy of generic and disease specific items.
Conclusion: The QUOTE-cataract has good reliability and provides a valid assessment of quality of care in cataract surgery.
Keywords: cataract; quality of health care; QUOTE-Cataract
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