J Evid Based Dent Pract. 2011 Jun;11(2):75-83. doi: 10.1016/j.jebdp.2010.11.026.
The objective of this article was to record reporting characteristics related to study quality of research published in major specialty dental journals with the highest impact factor (Journal of Endodontics, Journal of Oral and Maxillofacial Surgery, American Journal of Orthodontics and Dentofacial Orthopedics; Pediatric Dentistry, Journal of Clinical Periodontology, and International Journal of Prosthetic Dentistry). The included articles were classified into the following 3 broad subject categories: (1) cross-sectional (snap-shot), (2) observational, and (3) interventional. Multinomial logistic regression was conducted for effect estimation using the journal as the response and randomization, sample calculation, confounding discussed, multivariate analysis, effect measurement, and confidence intervals as the explanatory variables. The results showed that cross-sectional studies were the dominant design (55%), whereas observational investigations accounted for 13%, and interventions/clinical trials for 32%. Reporting on quality characteristics was low for all variables: random allocation (15%), sample size calculation (7%), confounding issues/possible confounders (38%), effect measurements (16%), and multivariate analysis (21%). Eighty-four percent of the published articles reported a statistically significant main finding and only 13% presented confidence intervals. The Journal of Clinical Periodontology showed the highest probability of including quality characteristics in reporting results among all dental journals.
本文的目的是记录在影响因子最高的主要专业牙科期刊（《牙髓学杂志》、《口腔颌面外科杂志》、《美国正畸与牙面矫形学杂志》、《儿童牙科杂志》、《临床牙周病学杂志》和《国际种植牙学杂志》）上发表的研究质量报告的特点。纳入的文章分为以下 3 个广泛的主题类别：（1）横断面（快照）、（2）观察性和（3）干预性。使用期刊作为响应和随机化、样本量计算、讨论的混杂因素、多变量分析、效果测量和置信区间作为解释变量，进行多项逻辑回归进行效果估计。结果表明，横断面研究是主要设计（55%），而观察性研究占 13%，干预/临床试验占 32%。所有变量的质量特征报告都很低：随机分配（15%）、样本量计算（7%）、混杂问题/可能的混杂因素（38%）、效果测量（16%）和多变量分析（21%）。发表的文章中有 84%报告了具有统计学意义的主要发现，只有 13%报告了置信区间。在所有牙科期刊中，《临床牙周病学杂志》在报告结果中纳入质量特征的可能性最高。
