Järvinen Seppo, Widström Eeva
National Research and Development Centre for Welfare and Health (STAKES), Helsinki, Finland.
Swed Dent J. 2002;26(1):41-9.
Factors affecting the costs of children's free orthodontic treatment were studied from patient records of a random sample of 193 successfully treated orthodontic patients, aged 7-14 years at the start of the treatment. They were treated by orthodontic specialists in the health centers of the cities of Joensuu, Oulu, and Vaasa. The statistical analysis was done using advanced regression analysis, two-tailed t-test and chi-square test. The results indicated that the number of appliances used, the patients' ages at the start of treatment, the number of missed appointments, differences between health centers, and the change in PAR (Peer Assessment Rating) Index scores accounted for 78.7% of the variations in treatment costs. The number of appliances used was the most important factor in the regression (R2 = 0.657). The costs of treatment were lowest in one-stage treatments started in the permanent dentition, and were highest in two-stage treatments started in the mixed dentition. Significant differences were found in treatment patterns and costs between the three health centers, reflecting low concern for cost-efficiency aspects.
通过对193名成功接受正畸治疗患者的病历进行研究，这些患者在治疗开始时年龄为7至14岁，是从随机样本中选取的。他们由约恩苏、奥卢和瓦萨市健康中心的正畸专家进行治疗。统计分析采用了高级回归分析、双侧t检验和卡方检验。结果表明，使用矫治器的数量、治疗开始时患者的年龄、错过预约的次数、健康中心之间的差异以及PAR（同行评估等级）指数得分的变化占治疗成本变化的78.7%。使用矫治器的数量是回归分析中最重要的因素（R2 = 0.657）。恒牙列期开始的一期治疗成本最低，混合牙列期开始的两期治疗成本最高。三个健康中心在治疗模式和成本方面存在显著差异，这反映出对成本效益方面的关注度较低。
