22-03-2018 | Uitgave 6/2018
Psychometric properties of the Chinese version of resilience scale specific to cancer: an item response theory analysis
- Tijdschrift:
- Quality of Life Research > Uitgave 6/2018
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Electronic supplementary material
The online version of this article (https://doi.org/10.1007/s11136-018-1835-2) contains supplementary material, which is available to authorized users.
Zeng Jie Ye and Mu Zi Liang have contributed equally to this work and should be considered co-first authors.
Abstract
Objective
Classic theory test has been used to develop and validate the 25-item Resilience Scale Specific to Cancer (RS-SC) in Chinese patients with cancer. This study was designed to provide additional information about the discriminative value of the individual items tested with an item response theory analysis.
Methods
A two-parameter graded response model was performed to examine whether any of the items of the RS-SC exhibited problems with the ordering and steps of thresholds, as well as the ability of items to discriminate patients with different resilience levels using item characteristic curves.
Results
A sample of 214 Chinese patients with cancer diagnosis was analyzed. The established three-dimension structure of the RS-SC was confirmed. Several items showed problematic thresholds or discrimination ability and require further revision.
Conclusions
Some problematic items should be refined and a short-form of RS-SC maybe feasible in clinical settings in order to reduce burden on patients. However, the generalizability of these findings warrants further investigations.