Bate S Lewis, Stigler Melissa H, Thompson Marilyn S, MacKinnon David P, Arora Monika, Perry Cheryl L, Reddy K Srinath
Arizona State University; now Arlington, TN, USA.
Michael & Susan Dell Center for Healthy Living, University of Texas School of Public Health, Austin, TX, USA.
Field methods. 2012 May;24(2):194-215. doi: 10.1177/1525822X11420371. Epub 2011 Oct 14.
Causal mediating processes were examined using qualitative methods to evaluate a tobacco-use prevention program for adolescents in India, Project MYTRI (Mobilizing Youth for Tobacco-Related Initiatives in India). Interviews were conducted with Project MYTRI leaders and staff persons. The focus of the interviews was to learn about the program implementation and to characterize how Project MYTRI classroom sessions altered student-level psychosocial risk factors (mediators) to prevent or reduce tobacco use among students in intervention schools in Delhi and Chennai. From qualitative analysis, key mediating variables were identified (students' tobacco knowledge, skills development, beliefs about tobacco, intentional beliefs, advocacy beliefs, and self-efficacy beliefs), a qualitative mediation path model was drawn, causal processes were described, and contextual influences (potential moderators) were explained. The qualitative findings complemented the results of statistical mediation analysis, yielding a detailed and contextualized description of how Project MYTRI affected students.
采用定性方法对印度青少年烟草使用预防项目“MYTRI项目”（动员印度青年参与烟草相关倡议）的因果中介过程进行了研究。对MYTRI项目的负责人和工作人员进行了访谈。访谈重点是了解项目实施情况，并描述MYTRI项目的课堂教学如何改变学生层面的心理社会风险因素（中介变量），以预防或减少德里和金奈干预学校学生的烟草使用。通过定性分析，确定了关键中介变量（学生的烟草知识、技能发展、对烟草的信念、意向信念、倡导信念和自我效能信念），绘制了定性中介路径模型，描述了因果过程，并解释了背景影响（潜在调节变量）。定性研究结果补充了统计中介分析的结果，对MYTRI项目如何影响学生进行了详细且情境化的描述。
