Walsh M M
Community Dent Oral Epidemiol. 1985 Jun;13(3):143-7. doi: 10.1111/j.1600-0528.1985.tb00430.x.
A field experiment was done to evaluate the short term effects of a series of classroom preventive dentistry presentations on dental health knowledge, attitudes and reported behavior of adolescents. Eight hundred fifty-four boys and girls, 12-14-yr-old students enrolled in San Francisco middle schools, were randomly divided into experimental and control groups. A written test composed of questions relating to factual dental health knowledge, home care practices, and attitudes to dental health was answered by the experimental group at the beginning and end of the educational intervention and at comparable time intervals by the controls. Results showed a significant increase in knowledge for the experimental group (P less than 0.001), as compared with the control group. Pre-existing attitudes were generally positive for most subjects. Although the educational intervention resulted in no significant differences between the two groups with regard to attitude, there was a significant positive change in attitude within the experimental group (P less than 0.01) from pre- to posttest. In addition, there was a significant increase in the frequency with which the girls in the experimental group reportedly used the toothbrush (P = 0.01) and dental floss (P = 0.01).
开展了一项实地试验，以评估一系列口腔预防医学课堂演示对青少年牙齿健康知识、态度及所报告行为的短期影响。854名年龄在12至14岁的旧金山中学学生（男女生均有）被随机分为实验组和对照组。在教育干预开始和结束时，实验组回答了一份由与实际牙齿健康知识、家庭护理习惯及牙齿健康态度相关问题组成的书面测试，对照组在相应的时间间隔回答同样的测试。结果显示，与对照组相比，实验组的知识有显著增加（P<0.001）。大多数受试者先前的态度总体上是积极的。尽管教育干预在两组态度方面未导致显著差异，但实验组内从测试前到测试后态度有显著的积极变化（P<0.01）。此外，据报告实验组女生使用牙刷（P=0.01）和牙线（P=0.01）的频率有显著增加。
