Jiang Chao, Sun Wen-Jie, Wan Yan-Chun, Wei Ming-Wei, Mu Yong-Ping, Tarver Siobhan L, Gao Yong-Qing, Hu Tian, Xu Chao, Gordon James, Feng Cindy Xin, Wen Yu-Feng
School of Public Health, Wannan Medical College, Wuhu, China E-mail
Asian Pac J Cancer Prev. 2014;15(6):2707-11. doi: 10.7314/apjcp.2014.15.6.2707.
Smoking prevalence among the medical students is high in China. Therefore, understanding the smoking motivations of medical students is crucial for smoking control, but currently there are no scales questionnaires customized for probing the smoking motivations of medical students. This aim of study was to test and modify a questionnaire for investigating smoking motivations among medical students.
A cross-sectional survey was conducted among 1,125 medical students at Xuzhou Medical College in China in 2012.The model fit and validity was assessed by confirmatory factor analysis (CFA) and the reliability was tested by single-item reliability, composite reliability, and item-total correlation.
The prevalence of smoking was 9.84 % among study population. In the modified scales, the global fit indices identified a CFI value of 0.96, TLI was 0.96, and the RMSEA was 0.063. CFA supported the two dimensional structure of the instrument. The average variance extracted ranged from 0.45 to 0.62. All single-item reliability scores were greater than 0.20, and the composite reliability ranged from 0.74 to 0.91.
Modified scales could be the preliminary instrument used in evaluating the smoking motivations of medical students. However, it should be further assessed using other forms and methods of validity and reliability, additional motivations of smoking, and the survey of other medical colleges in China.
中国医学生的吸烟率很高。因此，了解医学生的吸烟动机对于控烟至关重要，但目前尚无专门用于探究医学生吸烟动机的量表问卷。本研究的目的是测试并修改一份用于调查医学生吸烟动机的问卷。
2012年对中国徐州医学院的1125名医学生进行了横断面调查。通过验证性因素分析（CFA）评估模型拟合度和效度，通过单项信度、组合信度和项目-总分相关分析来测试信度。
研究人群中的吸烟率为9.84%。在修改后的量表中，整体拟合指数显示比较拟合指数（CFI）值为0.96，塔克-刘易斯指数（TLI）为0.96，近似误差均方根（RMSEA）为0.063。CFA支持该量表的二维结构。平均提取方差范围为0.45至0.62。所有单项信度得分均大于0.20，组合信度范围为0.74至0.91。
修改后的量表可作为评估医学生吸烟动机的初步工具。然而，还应使用其他形式和方法进一步评估其效度和信度、吸烟的其他动机以及对中国其他医学院校进行调查。
