Department of Health, Physical Education & Human Performance, Salisbury University, Salisbury, Maryland 21801, USA.
J Am Coll Health. 2010 May-Jun;58(6):571-7. doi: 10.1080/07448481003622294.
When utilizing self-assessments to determine motives for health behaviors, it is essential that the resulting data demonstrate sound psychometric properties. The purpose of this research was to assess the reliability and construct validity of college students' responses to the Reasons for Smoking Scale (RFS). Confirmatory factor analyses and internal consistency reliability coefficients were completed. The data of 110 college students who smoke fell short of providing a good fit, chi2(130) = 343.856, root mean square error of approximation (RMSEA) = 0.123, comparative fit index (CFI) = 0.793, Tucker-Lewis index (TLI) = 0.756. Reliability coefficients ranged from .615 to .912. Three subscales improved reliability by removing an item. Although the fit indices showed improvement with these modifications, good model fit was still not achieved, chi2(50) = 148.059, RMSEA = 0.134, CFI = 0.872, TLI = 0.831. Although other populations' responses to the RFS have demonstrated validity and reliability, this college population's did not. Health educators should use caution when interpreting the results of college students' responses to the RFS because they may be incomplete and/or inaccurate.
当利用自我评估来确定健康行为的动机时，确保所得数据具有良好的心理测量学特性至关重要。本研究旨在评估大学生对吸烟原因量表（RFS）的反应的可靠性和构念效度。完成了验证性因素分析和内部一致性可靠性系数。110 名吸烟大学生的数据拟合效果不佳，卡方（130）= 343.856，近似均方根误差（RMSEA）= 0.123，比较拟合指数（CFI）= 0.793，Tucker-Lewis 指数（TLI）= 0.756。可靠性系数范围为 0.615 至 0.912。通过删除一个项目，三个子量表提高了可靠性。尽管这些修改后的拟合指数有所改善，但仍未达到良好的模型拟合，卡方（50）= 148.059，RMSEA = 0.134，CFI = 0.872，TLI = 0.831。尽管其他人群对 RFS 的反应已经证明了有效性和可靠性，但这个大学生群体的反应并没有。健康教育者在解释大学生对 RFS 的反应结果时应谨慎，因为这些结果可能不完整和/或不准确。
