Department of Oncology, Oslo University Hospital, Radiumhospitalet, Postboks 4953, Nydalen, 0424, Oslo, Norway.
Qual Life Res. 2012 Oct;21(8):1459-70. doi: 10.1007/s11136-011-0053-y. Epub 2011 Nov 2.
The impact of cancer scale version 1 (IOC-1) from 2006 has only been tested psychometrically in a heterogeneous sample of 193 American long-term cancer survivors (LTSs). The Norwegian version of IOC-1 compares the psychometric findings of that study with those observed in a heterogeneous sample of 809 Norwegian LTSs.
We performed exploratory (EFA) and confirmatory (CFA) factor analyses, tests of internal consistency, correlational studies with various other tests and a change over time examination in order to test reliability and validity of the IOC-1.
The American factor structure of the IOC-1 with 10 dimensions showed adequate fit with CFA in the Norwegian sample, but internal consistency was insufficient in 2 dimensions. EFA of the Norwegian sample found a 9 factor solution that also showed adequate fit on CFA, and with sufficient internal consistencies for all dimensions. The SF-36 dimensions, anxiety, depression, neuroticism, fatigue and body image all showed low correlations with the positive dimensions of the IOC-1, but higher correlations with the IOC-1 negative dimensions. The IOC-1 dimensions showed considerable stability over time.
In our big heterogeneous sample of LTSs, the Norwegian version of the IOC-1 showed discriminant and concurrent validity, and reliability was supported.
2006 年版癌症量表 1（IOC-1）仅在 193 名美国长期癌症幸存者（LTS）的异质样本中进行了心理测量学测试。IOC-1 的挪威版本将该研究的心理测量学发现与在 809 名挪威 LTS 的异质样本中观察到的结果进行了比较。
我们进行了探索性（EFA）和验证性（CFA）因子分析、内部一致性测试、与各种其他测试的相关性研究以及随时间的变化检查，以测试 IOC-1 的可靠性和有效性。
IOC-1 的美国 10 维度因子结构在挪威样本中具有足够的 CFA 拟合度，但在 2 个维度上内部一致性不足。挪威样本的 EFA 发现了 9 个因素的解决方案，在 CFA 上也具有足够的拟合度，并且所有维度的内部一致性都足够。SF-36 维度、焦虑、抑郁、神经质、疲劳和身体形象与 IOC-1 的积极维度相关性较低，但与 IOC-1 的消极维度相关性较高。IOC-1 维度在相当长的时间内表现出相当大的稳定性。
在我们的大型 LTS 异质样本中，IOC-1 的挪威版本表现出了区分性和同时有效性，可靠性得到了支持。
