Nursing School of Jilin University, Jilin University, Changchun, Jilin, China.
Developmental Pediatrics, Jilin University Second Hospital, Changchun, Jilin, China.
BMJ Open. 2020 Mar 9;10(3):e035911. doi: 10.1136/bmjopen-2019-035911.
To perform the cross-cultural adaption of the Breast Cancer Awareness Measurement (BCAM) and to test its psychometric properties among Chinese women.
This is a cross-sectional study.
This study was conducted in communities, schools and institutions in Changchun, Jilin Province, China.
A total of 328 women voluntarily participated in and completed the Chinese version of the BCAM (C-BCAM), resulting in an effective response rate of 91.1%.
Psychometric properties, including item analysis (the extreme group comparison and item-total correlations), content validity (item-level content validity index (I-CVI) and scale-level content validity index (S-CVI)), construct validity (exploratory factor analysis (EFA) and confirmatory factor analysis (CFA)) and internal consistency (Cronbach's α and test-retest reliability), were measured.
The C-BCAM has excellent internal consistency (Cronbach's α=0.90), with alpha coefficients of 0.88, 0.84 and 0.94 for its three domains. The test-retest reliability coefficient was 0.72. The I-CVI ranged from 0.86 to 1.00, and the S-CVI was 0.92. CFA showed that the three-factor model explained 51.56% of the total variance, with a good model fit (likelihood ratio χ/df=1.86, incremental fit index=0.94, comparative fit index=0.94, goodness-of-fit index=0.84, adjusted goodness-of-fit index=0.80, standardised root mean square error of approximation=0.06 and root mean square residual=0.05).
The C-BCAM has satisfactory validity and reliability and is a culturally appropriate and reliable tool for evaluating breast cancer awareness among Chinese women. This reliable instrument can help researchers and health professionals evaluate women's knowledge about the symptoms and risk factors of breast cancer and identify their barriers to seeking medical help. It also helps healthcare providers identify women with poor breast cancer awareness and encourage them to perform screening practice.
对乳腺癌意识测量表（BCAM）进行跨文化调适，并在中国女性中测试其心理测量学特性。
这是一项横断面研究。
本研究在中国吉林省长春市的社区、学校和机构进行。
共有 328 名女性自愿参加并完成了中文版 BCAM（C-BCAM），有效应答率为 91.1%。
心理测量学特性，包括条目分析（极端组比较和条目总分相关性）、内容效度（条目水平内容效度指数（I-CVI）和量表水平内容效度指数（S-CVI））、结构效度（探索性因子分析（EFA）和验证性因子分析（CFA））和内部一致性（克朗巴赫α和重测信度）。
C-BCAM 具有良好的内部一致性（克朗巴赫α=0.90），其三个领域的α系数分别为 0.88、0.84 和 0.94。重测信度系数为 0.72。I-CVI 范围为 0.86 至 1.00，S-CVI 为 0.92。CFA 显示，三因素模型解释了总方差的 51.56%，具有良好的模型拟合度（似然比 χ/df=1.86，增量拟合指数=0.94，比较拟合指数=0.94，拟合优度指数=0.84，调整拟合优度指数=0.80，标准化均方根误差近似值=0.06，均方根残差=0.05）。
C-BCAM 具有良好的效度和信度，是一种适用于中国女性评估乳腺癌意识的文化适宜且可靠的工具。这种可靠的工具可以帮助研究人员和卫生专业人员评估女性对乳腺癌症状和危险因素的认识，以及她们寻求医疗帮助的障碍。它还有助于医疗保健提供者识别出乳腺癌意识较差的女性，并鼓励她们进行筛查实践。
