Benson Philip E, Gilchrist Fiona, Farella Mauro
Academic Unit of Oral Health, Dentistry and Society, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK.
Department of Oral Sciences, Faculty of Dentistry, University of Otago, Dunedin 9054, New Zealand.
Dent J (Basel). 2019 Mar 4;7(1):24. doi: 10.3390/dj7010024.
The aim of the study was to test the validity of the Malocclusion Impact Questionnaire (MIQ) in a NZ sample and to evaluate possible cross-cultural differences in MIQ data between a NZ and a UK sample. A cross-sectional, non-random sample of young people, aged 10⁻16 years, attending their first appointment at the orthodontic clinic of New Zealand's National Centre for Dentistry were asked to complete a questionnaire. This consisted of the 17 item MIQ, the short form CPQ-ISF16 and two global questions. Some basic demographic and clinical data were collected. Sixty-six participants completed the questionnaire; however, the data for 2 were excluded due to the number of incomplete responses. MIQ was found to have excellent internal consistency (Cronbach's alpha 0.924), good construct validity (Spearman's rho, 0.661 global Q1 'Overall, how much do your teeth bother you?'; 0.583 global Q2 'Overall, how much do your teeth affect your life?'). MIQ also demonstrated good criterion validity with CPQ-ISF16 (Pearson rho, 0.625). The Rasch analysis confirmed that the questionnaire performed similarly and there was no differential item functioning between the two populations. The main differences between the samples were that the young people in NZ were less concerned about their malocclusion and reported lower item-impact scores compared with the young people in the UK.
本研究的目的是检验错颌畸形影响问卷（MIQ）在新西兰样本中的有效性，并评估新西兰和英国样本之间MIQ数据可能存在的跨文化差异。选取了年龄在10至16岁之间、首次到新西兰国家牙科中心正畸诊所就诊的年轻人作为横断面非随机样本，要求他们填写一份问卷。问卷包括17项的MIQ、简化版儿童口腔健康影响问卷（CPQ-ISF16）以及两个总体问题。收集了一些基本的人口统计学和临床数据。66名参与者完成了问卷；然而，由于回答不完整，2人的数据被排除。结果发现MIQ具有出色的内部一致性（克朗巴哈系数为0.924）、良好的结构效度（斯皮尔曼等级相关系数，总体问题1“总体而言，你的牙齿给你带来了多大困扰？”为0.661；总体问题2“总体而言，你的牙齿对你的生活有多大影响？”为0.583）。MIQ与CPQ-ISF16也显示出良好的效标效度（皮尔逊相关系数为0.625）。拉施分析证实该问卷表现相似，且两个人群之间不存在项目功能差异。样本之间的主要差异在于，与英国的年轻人相比，新西兰的年轻人对错颌畸形的担忧较少，且报告的项目影响得分较低。
