Calnan M
Br J Med Psychol. 1985 Dec;58(4):317-29. doi: 10.1111/j.2044-8341.1985.tb02648.x.
Interviews were carried out with a sample of women before they were invited to attend a class teaching breast self-examination (BSE), and then again a year later. Two-stage interviews were also carried out with a sample of women in a control district. This enabled an evaluation of the effectiveness of the class by comparing the changes in BSE practice over the year amongst those who attended the class, those who declined to attend the class and those in the control district. Those who attended the class showed a more marked improvement in BSE practice, particularly in the technique used, compared with the non-attenders and those in the control district. This finding was still evident even after a range of possible confounding factors was taken into account. Further analyses showed that beliefs about the value of BSE were the strongest predictors of changes in BSE practice.
在邀请一组女性参加乳房自我检查（BSE）课程之前，对她们进行了访谈，一年后又进行了一次访谈。同时，对一个对照地区的一组女性也进行了两阶段访谈。通过比较参加课程的女性、拒绝参加课程的女性以及对照地区女性在这一年中乳房自我检查行为的变化，从而对该课程的效果进行评估。与未参加者和对照地区的女性相比，参加课程的女性在乳房自我检查行为方面有更显著的改善，尤其是在检查技术方面。即使考虑了一系列可能的混杂因素，这一发现仍然很明显。进一步分析表明，对乳房自我检查价值的信念是乳房自我检查行为变化的最强预测因素。
