Smith Maddison, Sharpe Louise, Winiarski Natalie, Shaw Joanne
The School of Psychology, Faculty of Science, The University of Sydney, Sydney, Australia.
Psychooncology. 2024 Dec;33(12):e70055. doi: 10.1002/pon.70055.
The Worries About Recurrence or Progression Scale (WARPS) was recently validated in four common chronic illnesses other than cancer, after a rigorous development process based on the COSMIN criteria. Available measures of fear of progression or fear of cancer recurrence (FCR) have been criticised for not meeting all COSMIN criteria. Therefore, this study aimed to explore the psychometric properties of the WARPS in a cancer sample to assess its applicability to measure FCR.
We recruited 346 participants living with or beyond cancer for an online survey. The psychometric properties of the WARPS were examined using a confirmatory factor analysis. Convergent validity was assessed against the current gold standard questionnaires and constructs related to FCR. Some participants completed a follow-up survey 2 weeks later, to assess the test-retest reliability. Finally, a Receiver Operating Characteristics analysis was conducted to determine clinical cut-offs for the WARPS.
Confirmatory factor analysis confirmed that the WARPS has one underlying factor, fear of recurrence or progression (FRP), with adequate model fit. The WARPS demonstrated excellent internal consistency, test-retest reliability and showed convergent validity. ROC analysis revealed a cut-off of 54 for moderate, and 65 for severe FCR on the WARPS.
The WARPS demonstrated good psychometric properties in a cancer sample. It has the capacity to be used as a screening tool to identify clinical levels of FCR. The WARPS was developed consistent with the COSMIN criteria and overcomes some of the limitations of existing measures.
在基于COSMIN标准进行严格的开发过程后，近期对癌症以外的四种常见慢性病验证了复发或进展担忧量表（WARPS）。现有的癌症进展恐惧或癌症复发恐惧（FCR）测量方法因未满足所有COSMIN标准而受到批评。因此，本研究旨在探讨WARPS在癌症样本中的心理测量特性，以评估其用于测量FCR的适用性。
我们招募了346名癌症患者或康复者参与在线调查。使用验证性因素分析来检验WARPS的心理测量特性。根据当前的金标准问卷和与FCR相关的结构评估收敛效度。部分参与者在2周后完成随访调查，以评估重测信度。最后，进行了受试者工作特征分析以确定WARPS的临床临界值。
验证性因素分析证实，WARPS有一个潜在因素，即复发或进展恐惧（FRP），模型拟合良好。WARPS表现出出色的内部一致性、重测信度，并显示出收敛效度。ROC分析显示，WARPS上中度FCR的临界值为54，重度FCR的临界值为65。
WARPS在癌症样本中表现出良好的心理测量特性。它有能力用作筛查工具来识别FCR的临床水平。WARPS是根据COSMIN标准开发的，克服了现有测量方法的一些局限性。
