Pain Relief and Palliative Care Unit, Department of Radiology, Areteion Hospital, School of Medicine, University of Athens, Athens, Greece.
Psychooncology. 2012 Nov;21(11):1215-21. doi: 10.1002/pon.2014. Epub 2011 Jul 1.
The study aimed to assess the psychometric properties of the Cancer Locus of Control (CLOC) scale on a Greek sample of advanced cancer patients.
The scale was translated with the forward-backward procedure to Greek. The CLOC scale was administered to 140 advanced cancer patients. It was administered twice, with a 3-day interval, to 100 (of the 140) eligible patients with advanced cancer. Together with the CLOC scale, the patients also completed the Greek Mental Adjustment to Cancer (G-MAC) scale. Confirmatory factor analysis was carried out using the AMOS 7.0 analysis. The reliability was assessed by the internal consistency (Cronbach's α coefficients), test-retest (Spearman's r value) of the instrument, and inter-item correlations. Construct validity was assessed using the G-MAC scale, interscale correlations, item-scale correlations, and scales-total correlations.
The homogeneity of the subscales proved to be satisfactory (α coefficient ranged from 0.713 to 0.786). Overall test-retest reliability was satisfactory at p < 0.0005. Construct validity has shown moderate correlations with G-MAC p < 0.0005. Interscale and inter-item correlations were satisfactory at p < 0.05.
The results suggest that the Greek version of CLOC administered in cancer patients treated in a palliative care unit is a reliable and valid clinical instrument.
本研究旨在评估癌症控制源量表（CLOC）在希腊晚期癌症患者样本中的心理测量特性。
采用正向-反向翻译程序将量表翻译成希腊语。CLOC 量表被用于 140 名晚期癌症患者。对 100 名符合条件的晚期癌症患者（140 名中的 100 名）进行了两次间隔 3 天的测试。除了 CLOC 量表外，患者还完成了希腊癌症心理调整量表（G-MAC）。采用 AMOS 7.0 分析进行验证性因子分析。使用内部一致性（Cronbach's α 系数）、仪器的重测（Spearman 的 r 值）和项目间相关性评估可靠性。使用 G-MAC 量表、量表间相关性、项目-量表相关性和量表总分相关性评估结构有效性。
亚量表的同质性令人满意（α系数范围为 0.713 至 0.786）。总体重测信度在 p < 0.0005 时令人满意。结构有效性与 G-MAC 显示出中度相关性（p < 0.0005）。量表间和项目间的相关性在 p < 0.05 时令人满意。
研究结果表明，在姑息治疗病房接受治疗的癌症患者中使用的希腊语版 CLOC 是一种可靠且有效的临床工具。
