Dean, K;
Walker, Z;
Jenkinson, C;
(2018)
Data quality, floor and ceiling effects, and test-retest reliability of the Mild Cognitive Impairment Questionnaire.
Patient Related Outcome Measures
, 9
pp. 43-47.
10.2147/PROM.S145676.
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Abstract
BACKGROUND: The Mild Cognitive Impairment Questionnaire (MCQ) is a 13-item measure that assesses health-related quality of life (HRQoL) in people with mild cognitive impairment (PWMCI); it has two domains assessing the emotional and practical effects. OBJECTIVE: The aim of this study was to assess the psychometric properties of the MCQ. DESIGN: This is a longitudinal questionnaire-based study. SETTING: The participants were recruited from the memory clinics and research databases in the South of England. SUBJECTS: A total of 299 people aged 50 years and older with a diagnosis of mild cognitive impairment confirmed within the preceding 12 months. METHODS: MCQs were distributed to patients in memory clinics and those listed on research databases. Participants who returned completed questionnaires were sent a second copy of the MCQ to return 2 weeks after receiving the first questionnaire. RESULTS: Five hundred and seven questionnaires were distributed; response rates were 68.2% initially and 89.2% for the second questionnaire. From the returned questionnaires, response rates for each item were high (>98%) and a full range of responses for each item was received with no evidence of significant floor or ceiling effects. Internal consistency reliability for both scale scores at both time points was good, with Cronbach’s α≥0.84 in all cases. Test–retest reliability was excellent for both domains with the intraclass correlation coefficients of 0.90 and 0.92 for the practical and emotional domains, respectively. Paired sample t-tests also confirmed the stability of scale score distributions over time. CONCLUSION: The MCQ has robust psychometric properties, which make it suitable for assessing HRQoL in PWMCI, including comparison of group level data in intervention studies.
| Type: | Article |
|---|---|
| Title: | Data quality, floor and ceiling effects, and test-retest reliability of the Mild Cognitive Impairment Questionnaire |
| Location: | New Zealand |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.2147/PROM.S145676 |
| Publisher version: | https://doi.org/10.2147/PROM.S145676 |
| Language: | English |
| Additional information: | This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License (https://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms. |
| Keywords: | health-related quality of life, mild cognitive impairment, psychometric, validation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Division of Psychiatry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10043394 |
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