John W, Kerr S, Buchanan I B, McNair F I, McColl J H
Department of Orthodontics, University of Glasgow, Scotland, UK.
Eur J Orthod. 1994 Jun;16(3):181-6. doi: 10.1093/ejo/16.3.181.
The study models and records of 150 consecutively completed removable appliance cases were analysed and the influence of various factors assessed on both the change in Peer Assessment Rating (PAR) score produced by treatment and the duration of treatment. For the purpose of analysis the material was divided into two groups; a functional appliance/headgear group (n = 43) and an upper removable appliance group (n = 103). The initial PAR score accounted for 71 per cent of the variation in PAR change in the functional/headgear group when combined with the sex of the patient; females on average showing a further improvement of 3 PAR points over equivalent males. The initial PAR score alone accounted for 68 per cent of the variation in PAR change in the upper removable appliance group. Sixty per cent of the variability in treatment duration could be explained in the functional/headgear group by the initial PAR score and a binary variable indicating whether three or more appliances had been required. Fifty-six per cent of the variability in duration in the upper removable appliance group was explained by the number of appliances used alone. Regression equations for prediction of outcome and duration of removable appliance treatment are given.
对150例连续完成的可摘矫治器病例的研究模型和记录进行了分析，并评估了各种因素对治疗产生的同伴评估评分（PAR）变化及治疗持续时间的影响。为便于分析，将材料分为两组：功能矫治器/头帽组（n = 43）和上颌可摘矫治器组（n = 103）。在功能矫治器/头帽组中，将初始PAR评分与患者性别相结合时，其占PAR变化差异的71%；平均而言，女性比同等男性在PAR评分上进一步提高3分。在上颌可摘矫治器组中，仅初始PAR评分就占PAR变化差异的68%。在功能矫治器/头帽组中，治疗持续时间60%的变异性可由初始PAR评分和一个表明是否需要三种或更多矫治器的二元变量来解释。在上颌可摘矫治器组中，治疗持续时间56%的变异性仅由使用的矫治器数量来解释。文中给出了可摘矫治器治疗结果和持续时间的预测回归方程。
