The Department of Medicine, Baylor College of Medicine, The Faculty Center, Houston, TX 77030, USA.
Cancer Epidemiol. 2010 Aug;34(4):382-7. doi: 10.1016/j.canep.2010.04.020. Epub 2010 Jun 2.
Because of the lack of consistency in the associations of the socioeconomic status (SES) of prostate cancer (PC) patients from diverse racial and ethnic backgrounds with PC health outcomes, I created the Socioeconomic Status Instrument (SESI) from the Demographic and Health Access components of the Behavioral Risk Factor Surveillance System 2004 Questionnaires and the socioeconomic indices of the subjects' residential counties to better assess the SES of PC patients.
The SESI was tested on 220 consecutive subjects with pathologically confirmed PC at the Veterans Affairs Medical Center in Houston, TX. A team that included an epidemiologist, a validation statistician/health services research scientist, and PC survivors assessed the content validity of the SESI. The construct validity of the SESI was assessed with factor analysis by extracting and analyzing 5 principal components based on the subjects' individual responses on the assessment: county socioeconomic characteristics, individual socioeconomic characteristics, financial distress, increased domestic burden with limited earnings, and affluence. The internal consistency reliability of the SESI was assessed with Cronbach's alpha coefficients.
Based on the reviews of the SESI, all of the initial 10 items were retained. The correlations between individual responses on the SESI were similar to the results of previous studies. The 5 principal components that I assessed accounted for 71.5% of the variance. Factor loadings ranged from 0.66 to 0.98 and communalities ranged from 0.55 to 0.94. County socioeconomic characteristics accounted for 22.6% of the variance, whereas individual socioeconomic characteristics accounted for 14.6% of the variance. The overall Cronbach's alpha coefficient was 0.78.
The SESI is valid and reliable. Accurate measurements of the SES of PC patients would provide better guidance for future research and care deliveries.
由于来自不同种族和族裔背景的前列腺癌 (PC) 患者的社会经济地位 (SES) 与 PC 健康结果之间的关联缺乏一致性，我从行为风险因素监测系统 2004 年问卷的人口统计学和健康获取部分以及受试者居住县的社会经济指数中创建了 SES 工具 (SESI)，以更好地评估 PC 患者的 SES。
该 SESI 在德克萨斯州休斯顿退伍军人事务医疗中心的 220 名经病理证实的 PC 连续患者中进行了测试。一个由流行病学家、验证统计学家/卫生服务研究科学家和 PC 幸存者组成的团队评估了 SESI 的内容效度。通过基于受试者个体对评估的反应提取和分析 5 个主要成分，使用因子分析评估 SESI 的结构效度：县社会经济特征、个体社会经济特征、经济困境、收入有限导致家庭负担增加和富裕。使用 Cronbach's alpha 系数评估 SESI 的内部一致性可靠性。
根据对 SESI 的审查，保留了所有最初的 10 个项目。SESI 上的个体反应之间的相关性与之前研究的结果相似。我评估的 5 个主要成分占方差的 71.5%。因子负荷范围为 0.66 至 0.98，公因子范围为 0.55 至 0.94。县社会经济特征占方差的 22.6%，个体社会经济特征占方差的 14.6%。总体 Cronbach's alpha 系数为 0.78。
SESI 是有效且可靠的。对 PC 患者 SES 的准确测量将为未来的研究和护理提供更好的指导。
