TY - JOUR
T1 - The ICECAP-A instrument for capabilities
T2 - assessment of construct validity and test–retest reliability in a general Dutch population
AU - Rohrbach, Pieter J.
AU - Dingemans, Alexandra E.
AU - Essers, Brigitte A.
AU - van Furth, Eric F.
AU - Spinhoven, Philip
AU - Groothuis-Oudshoorn, Catharina G.M.
AU - van Til, Janine A.
AU - van den Akker-van Marle, M. Elske
N1 - Funding Information:
The work was supported by Stichting Zorg & Zekerheid (ST.2019-24) and ZonMw (636310001).
Publisher Copyright:
© 2021, The Author(s).
PY - 2022/3/1
Y1 - 2022/3/1
N2 - Purpose: The ICEpop CAPability measure for Adults (ICECAP-A) assesses five capabilities that are important to one’s well-being. The instrument might be an important addition to generic health questionnaires when evaluating quality of life extending beyond health. This study aimed to conduct a psychometric assessment of the Dutch translation of the ICECAP-A.Methods: Construct validity of the instrument was assessed in two ways. First, by measuring correlations with the EQ-5D-5L questionnaire and a measure of self-efficacy and, second, by investigating the ability to distinguish between groups known to differ on the construct the ICECAP-A means to capture. Additionally, test–retest reliability was evaluated.Results: In total, 1002 participants representative of the general Dutch population completed an online survey. For test–retest reliability, 252 participants completed the same questionnaire 2 weeks later. The ICECAP-A indicated moderate to strong correlations with the EQ-5D-5L and a strong correlation with self-efficacy. Furthermore, it was capable of differentiating known groups. Moreover, results indicated adequate test–retest reliability with an intraclass correlation coefficient of 0.79.Conclusion: In summary, results suggest adequate test–retest reliability and construct validity and indicate that the ICECAP-A might be of added value, especially when considering areas outside of the traditional health intervention model.
AB - Purpose: The ICEpop CAPability measure for Adults (ICECAP-A) assesses five capabilities that are important to one’s well-being. The instrument might be an important addition to generic health questionnaires when evaluating quality of life extending beyond health. This study aimed to conduct a psychometric assessment of the Dutch translation of the ICECAP-A.Methods: Construct validity of the instrument was assessed in two ways. First, by measuring correlations with the EQ-5D-5L questionnaire and a measure of self-efficacy and, second, by investigating the ability to distinguish between groups known to differ on the construct the ICECAP-A means to capture. Additionally, test–retest reliability was evaluated.Results: In total, 1002 participants representative of the general Dutch population completed an online survey. For test–retest reliability, 252 participants completed the same questionnaire 2 weeks later. The ICECAP-A indicated moderate to strong correlations with the EQ-5D-5L and a strong correlation with self-efficacy. Furthermore, it was capable of differentiating known groups. Moreover, results indicated adequate test–retest reliability with an intraclass correlation coefficient of 0.79.Conclusion: In summary, results suggest adequate test–retest reliability and construct validity and indicate that the ICECAP-A might be of added value, especially when considering areas outside of the traditional health intervention model.
U2 - 10.1007/s11136-021-02980-5
DO - 10.1007/s11136-021-02980-5
M3 - Article
VL - 31
SP - 687
EP - 696
JO - Quality of life research
JF - Quality of life research
SN - 0962-9343
ER -