Development and psychometric analysis of the 10-item resilience scale specific to cancer: A multidimensional item
Zeng Jie Ye1, Zhang Zhang2, Ying Tang3
1Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, 510006, China.
Purpose:
Resilience is an important concept in the cancer literature and is a salient indicator of cancer survivorship. Classic theory test (CTT) and item response theory (IRT) were performed to develop and validate the 25-item Resilience Scale Specific to Cancer (RS-SC). This study was designed to develop and validate a short form of RS-SC (RS-SC-10) with a multidimensional IRT (MIRT) analysis.
Methods:
MIRT analysis was performed to test two models (three- and five-factor) derived from previous studies and assess the item parameters of RS-SC and RS-SC-10.
Results:
A total of 451 Chinese patients with different cancer diagnoses were analyzed. The three-factor structure showed better goodness of fit compared with the five-factor structure in RS-SC. RS-SC-10 retained 10 items with high discriminative parameters from RS-SC and consisted of two factors, Generic and Shift-Persist. Item information function indicated that RS-SC-10 had the highest discrimination ability among patients with low to moderate levels of resilience.
Conclusions:
MIRT provided useful information on RS-SC and RS-SC-10 by combining the approaches of CTT and IRT. RS-SC-10 showed great potential in clinical settings owing to the low scale of burden on patients. More studies on the Minimum Clinically Important Difference of RS-SC-10 are warranted.
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