TY - JOUR
T1 - The ICECAP-A instrument for capabilities: assessment of construct validity and test-retest reliability in a general Dutch population
AU - Rohrbach, P.J.
AU - Dingemans, A.E.
AU - Essers, B.A.
AU - Van Furth, E.F.
AU - Spinhoven, P.
AU - Groothuis-Oudshoorn, C.G.M.
AU - Van Til, J.A.
AU - Van den Akker-Van Marle, M.E.
PY - 2022/3
Y1 - 2022/3
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.
KW - Capabilities
KW - Well-being
KW - Psychometric assessment
KW - Known-group validity
KW - PSYCHOMETRIC PROPERTIES
KW - HEALTH
KW - VERSION
KW - ADULTS
U2 - 10.1007/s11136-021-02980-5
DO - 10.1007/s11136-021-02980-5
M3 - Article
C2 - 34463861
SN - 0962-9343
VL - 31
SP - 687
EP - 696
JO - Quality of Life Research
JF - Quality of Life Research
IS - 3
ER -