Aveyard P, Sherratt E, Almond J, Lawrence T, Lancashire R, Griffin C, Cheng K K
Department of Public Health and Epidemiology, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Prev Med. 2001 Oct;33(4):313-24. doi: 10.1006/pmed.2001.0889.
The transtheoretical model (TTM) and computer technology are promising technologies for changing health behavior, but there is little evidence of their effectiveness among adolescents.
Four thousand two hundred twenty-seven Year 9 (ages 13-14) pupils in 26 schools were randomly allocated to control and 4,125 in 26 schools were allocated to TTM intervention. TTM pupils received three whole class lessons and three sessions with an interactive computer program. Control pupils received no special intervention. Positive change in stage and smoking status was assessed from a questionnaire completed at baseline, 1 year, and 2 years. Random effects logistic regression was used to compare the change in stage and smoking status between the arms.
Eighty-nine percent of the TTM group and 89.3% of the control group were present at 1-year and 86.0 and 83.1%, respectively, were present at 2-year follow-up. The adjusted odds ratio (95% confidence interval) for positive stage movement in the TTM relative to control was 1.13 (0.91-1.41) at 1 year and 1.25 (0.95-1.64) at 2 years and for regular smoking was 1.14 (0.93-1.39) at 1 year and 1.06 (0.86-1.31) at 2 years. Subgroup analysis by initial smoking status revealed no benefit for prevention or cessation.
The intervention was ineffective.
跨理论模型（TTM）和计算机技术是改变健康行为的有前景的技术，但在青少年中几乎没有其有效性的证据。
26所学校的4227名九年级（13 - 14岁）学生被随机分配到对照组，26所学校的4125名学生被分配到TTM干预组。TTM组学生接受了三节全班课程和三节使用交互式计算机程序的课程。对照组学生未接受特殊干预。从在基线、1年和2年时完成的问卷中评估阶段和吸烟状况的积极变化。使用随机效应逻辑回归来比较两组之间阶段和吸烟状况的变化。
TTM组的89%和对照组的89.3%在1年时参与，在2年随访时分别为86.0%和83.1%。TTM组相对于对照组在阶段正向变化方面的调整优势比（95%置信区间）在1年时为1.13（0.91 - 1.41），在2年时为1.25（0.95 - 1.64），对于经常吸烟在1年时为1.14（0.93 - 1.39），在2年时为1.06（0.86 - 1.31）。按初始吸烟状况进行的亚组分析显示对预防或戒烟无益处。
该干预无效。
