Gholami Mahdia, Pakdaman Afsaneh, Montazeri Ali, Virtanen Jorma I
Department of Community Oral Health, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Mental Health Research Group, Health Metrics Research Centre, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran.
PLoS One. 2017 Jan 6;12(1):e0169668. doi: 10.1371/journal.pone.0169668. eCollection 2017.
This study aimed to evaluate the impact of a national media campaign to promote oral health and periodontal knowledge among adults after a three-month follow-up.
We conducted a population-based study of adults aged 18 to 50 years using a stratified multi-stage sampling method in Tehran, Iran in 2011. The campaign included an animation clip about periodontal health and disease telecast on national TV for ten consecutive days. We used an instrument to assess the effect of the campaign at baseline, immediately after the campaign and after a three-month follow-up. A total of 543 participants responded at baseline and immediately after the intervention, and 294 were interviewed at the three-month follow-up assessment (response rate: 54.1%). We assessed each participant's periodontal knowledge score, calculated as a sum of correct answers, and the change in their score following the campaign. We then used a five-item questionnaire to evaluate the participants' opinion of the success of the campaign. We used descriptive statistics and generalised estimating equations (GEE) analysis to conduct the statistical analysis.
The mean score for knowledge improvement from baseline to immediate post-intervention evaluation was higher among those who saw the campaign (0.61) than among those who did not (0.29); the corresponding figures from immediate evaluation to three-month follow-up were -0.17 and 0.15, respectively. Adjusting for baseline values, the GEE analysis demonstrated that improvement in the mean score of post-campaign knowledge associated significantly with age, education and seeing the campaign. Significant interaction between the time since seeing the campaign and whether the participant saw it (p < 0.001) revealed that the mean difference in the knowledge score between the groups who did and did not see the campaign was 0.4 at the immediate evaluation and -0.04 at the three-month follow-up. The participants received the campaign well in terms of being appealing (91.4%), worth bearing in mind (83.4%) and containing valuable information (80.3%).
Our findings indicate that a population-based media campaign promoting oral health and periodontal knowledge among adults had a positive short-term impact, although the effect seemed to plateau after three months.
本研究旨在评估一项全国性媒体宣传活动在三个月随访后对促进成年人口腔健康和牙周知识的影响。
2011年，我们在伊朗德黑兰采用分层多阶段抽样方法对18至50岁的成年人进行了一项基于人群的研究。该宣传活动包括一个关于牙周健康与疾病的动画短片，在国家电视台连续播放了十天。我们使用一种工具在基线、宣传活动刚结束后以及三个月随访后评估该活动的效果。共有543名参与者在基线和干预刚结束后做出了回应，294名参与者在三个月随访评估时接受了访谈（回复率：54.1%）。我们评估了每位参与者的牙周知识得分（以正确答案总和计算）以及活动后其得分的变化。然后，我们使用一份包含五个条目的问卷来评估参与者对活动成功与否的看法。我们使用描述性统计和广义估计方程（GEE）分析进行统计分析。
观看了宣传活动的人群从基线到干预刚结束后的知识改善平均得分（0.61）高于未观看者（0.29）；从干预刚结束后评估到三个月随访的相应数字分别为-0.17和0.15。在对基线值进行调整后，GEE分析表明，活动后知识平均得分的提高与年龄、教育程度以及观看宣传活动显著相关。观看宣传活动后的时间与参与者是否观看之间的显著交互作用（p < 0.001）表明，在干预刚结束时，观看和未观看宣传活动的两组人群知识得分的平均差异为0.4，在三个月随访时为-0.04。参与者对该活动评价良好，认为其具有吸引力（91.4%）、值得铭记（83.4%）且包含有价值的信息（80.3%）。
我们的研究结果表明，一项针对成年人促进口腔健康和牙周知识的基于人群的媒体宣传活动产生了积极的短期影响，尽管这种效果在三个月后似乎趋于平稳。
