巴西功能性评估癌症治疗-宫颈问卷的心理计量特性评估。
Evaluation of the psychometric properties of the Functional Assessment of Cancer Therapy-Cervix questionnaire in Brazil.
机构信息
Graduation Program in Public Health Nursing, College of Nursing, University of São Paulo, Ribeirão Preto, Brazil ; Research and Teaching Institute, Barretos Cancer Hospital (IEP-HCB), Barretos, Brazil.
出版信息
PLoS One. 2013 Oct 16;8(10):e77947. doi: 10.1371/journal.pone.0077947. eCollection 2013.
BACKGROUND
Although cervical cancer is the second most common tumor among Brazilian women, studies that evaluate the quality of life of these women are still scarce. This situation is explained by the lack of specific and validated tools for this purpose in Portuguese (Brazil). The aim of this study was to evaluate the psychometric properties of the Portuguese version of the FACT-CX (Functional Assessment of Cancer Therapy-Cervix) questionnaire in a population of Brazilian women with cervical cancer.
METHODS
The psychometric properties of the FACT-CX questionnaire were tested in a sample of 100 women diagnosed with cervical cancer who were previously treated in the Barretos Cancer Hospital. We analyzed the internal consistency (Cronbach's alpha), reproducibility (intraclass correlation coefficient--ICC), confirmatory factor analysis, convergent validity (correlation with the SF-36 questionnaire), and discriminant validity by disease stage and two questions related to self-perception of health was also performed.
RESULTS
The scales had Cronbach's alpha coefficients ranging from 0.61 to 0.80. However, three scales did not have a statistically significant coefficient greater than 0.70. The ICC ranged from 0.68 to 0.82 and all considered satisfactory. Factor analysis did not generate consistent components. The FACT-G and FACT-CX total scores had good internal consistency and reproducibility, and also correlated well with the General Health and Vitality scales of the SF-36. However, only two FACT-CX scales had a significant correlation with SF-36. Discriminant analysis showed that FACT-CX failed to discriminate groups according to clinical stage but was able to divide the women according to the self-perception of health.
CONCLUSION
FATC-CX total score had good internal consistency, reproducibility and discriminant validity. In addition, it correlated well with General Health and Vitality scales of SF-36. However, three scales had questionable internal consistency and only two had significant correlation with SF-36.
背景
尽管宫颈癌是巴西女性中第二常见的肿瘤，但评估这些女性生活质量的研究仍然很少。这种情况是由于缺乏针对该目的的特定和经过验证的葡萄牙语（巴西）工具所致。本研究旨在评估宫颈癌巴西女性人群中 FACT-CX（癌症治疗宫颈功能评估）问卷葡萄牙文版本的心理测量特性。
方法
我们对在巴雷托斯癌症医院接受过治疗的 100 名宫颈癌诊断女性患者进行了 FACT-CX 问卷的心理测量特性测试。我们分析了内部一致性（Cronbach's alpha）、可重复性（组内相关系数-ICC）、验证性因子分析、与 SF-36 问卷的相关性（相关性）、疾病阶段和两个与自我健康感知相关的问题的判别有效性。
结果
各量表的 Cronbach's alpha 系数在 0.61 至 0.80 之间。然而，有三个量表的系数没有统计学意义，且均大于 0.70。ICC 范围在 0.68 至 0.82 之间，均为满意。因子分析没有产生一致的组成部分。FACT-G 和 FACT-CX 总分具有良好的内部一致性和可重复性，与 SF-36 的一般健康和活力量表也有很好的相关性。然而，只有两个 FACT-CX 量表与 SF-36 有显著相关性。判别分析表明，FACT-CX 不能根据临床阶段区分组，但能够根据自我健康感知来区分女性。
结论
FACT-CX 总分具有良好的内部一致性、可重复性和判别有效性。此外，它与 SF-36 的一般健康和活力量表也有很好的相关性。然而，有三个量表的内部一致性值得怀疑，只有两个与 SF-36 有显著相关性。
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