乐观主义-悲观主义量表在乳腺癌患者中应用的信效度研究

Reliability and Validity of the Optimism-pessimism Scale in Breast Cancer Patients

目的：评估乐观主义一悲观主义量表（OPS）在乳腺癌患者中的信度、效度。方法：618例乳腺癌患者完成乐观主义一悲观主义量表、汉密尔顿焦虑量表（HAMA）和汉密尔顿抑郁量表（HAMD）的评估。结果：OPS的Cronbach’s α系数为0．901，乐观主义分量表和悲观主义分量表的Cronbach’s α系数分别为0．928和0．863：全量表的分半信度为0．730，两个分量表的分半信度为0．882和0．857：全量表的重测信度为0．847．两个分量表的重测信度为0．846和0．779；全量表的条目间平均相关系数为0．457，两个分量表的条目间相关系数分别为0．720、0．518。OPS与乐观主义、悲观主义两个分量表分之间的相关系数分别为一0．884、0．923．两个分量表之间的相关系数为一0．636。验证性因素分析结果显示为~2／dr=4．018，GFI=0．950，IFI=0．967．TLI=0．955．CFI=0．967，RMSEA=0．075。OPS的两个分量表得分与HAMA、HAMD量表得分均相关显著，相关系数范围为0．218～0．410。城市地区与农村地区乳腺癌患者在乐观主义和悲观主义得分上差异显著（P〈O．001）；不同年龄组患者的得分仅在乐观主义分量表得分上有显著差异（P=-O．027）。结论：乐观主义一悲观主义量表（OPS）在乳腺癌患者中具有良好的信度、效度。

Objective： To evaluate the reliability and validity of the Optimism-pessimism Scale （OPS） in breast cancer patients. Methods： 618 women with breast cancer were tested by Optimism-pessimism Scale, Hamilton Anxiety Scale and Hamilton Depression Scale. Results： The Cronbach＇s alpha coefficient of the OPS total scale was 0.901, and the Cron- bach＇ s alpha coefficient of the two subscales of OPS were 0.928 and 0.863; the split-half reliability coefficient of the OPS was 0.730, and the split-half reliability coefficient of the two subscales were 0.882 and 0.857; the test-retest reliability of the OPS was 0.847, and the test-retest reliability of the two subscales were 0.846 and 0.779; the inter-item correlation co- efficient of the OPS was 0.457, and the inter-item correlation coefficient of the two subscales were 0.720 and 0.518. The correlation coefficients among the OPS and the subscales of OPS ranged from 0.636 to 0.923. The results of confirmatory factor analysis（x2/df=-4.018, GFI=0.950, IFI=0.967, TLI=0.955, CFI=0.967, RMSEA=0.075） all met the standard of psycho- metrics and supported the original OPS structural hypothesis of the two factor model. The correlation coefficients among the subscales of OPS, HAMA and HAMD ranged from 0.218 to 0.410. The scores of the two subscales of OPS were signif- icantly different between the urban area and the rural area （P〈0.001）, only the scores of the Optimism Scale were signifi- cantly different among the age groups. Conclusion： The reliability and validity of the Optimism-Pessimism Scale are ac- ceptable, and the scale can effectively detect the breast cancer patients＇ optimism and pessimism tendency.