Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London WC1E 6BT, UK.
J Public Health Dent. 2009 Summer;69(3):176-81. doi: 10.1111/j.1752-7325.2009.00120.x.
This study aimed to compare generic and condition-specific forms of the Oral Impacts on Daily Performances (OIDP) in terms of their ability to discriminate between adolescents with and without normative need for orthodontic treatment.
A total of 1,060 15- to 16-year-old adolescents without history of previous or current orthodontic treatment were randomly selected from all secondary schools in Bauru, Brazil. Adolescents were clinically examined by using the Dental Aesthetic Index (DAI). Normative need for orthodontic treatment was defined by using three different suggested cutoff values on DAI score; 28, 31, and 36 points. Two different estimates (overall score and prevalence of oral impacts) were calculated by using the generic and the condition-specific OIDP (CS-OIDP) attributed to malocclusion. Discriminative ability was assessed, comparing both estimates between groups. Effect size and adjusted odds ratios were used to interpret the magnitude and meaning of differences.
The overall score and prevalence of oral impacts on quality of life in the last 6 months were significantly lower for the CS-OIDP attributed to malocclusion than for the generic OIDP (P < 0.001 in both cases). However, effect sizes and adjusted odds ratios were always larger for the CS-OIDP attributed to malocclusion than for the generic OIDP.
Although generic and condition-specific OIDP forms were able to discriminate adolescents with normative need for orthodontic treatment from those without such a need, CS-OIDP attributed to malocclusion had better ability to distinguish between groups. Further studies are needed to compare discriminative ability of both OIDP forms between groups with different levels of other oral conditions.
本研究旨在比较通用型和特定于状况的口腔影响日常生活表现量表（OIDP）在区分有和无正畸治疗需求的青少年方面的能力。
从巴西包鲁市所有中学中随机抽取 1060 名 15 至 16 岁、无正畸治疗既往史或现病史的青少年。通过使用牙齿美学指数（DAI）对青少年进行临床检查。正畸治疗的需求是通过 DAI 评分的三个不同建议的临界值（28、31 和 36 分）来定义的。使用通用型和特定于状况的 OIDP（CS-OIDP）来计算与错颌相关的两个不同估计值（总体得分和口腔影响的发生率）。通过比较两组之间的这两种估计值，评估了区分能力。使用效应量和调整后的优势比来解释差异的大小和意义。
CS-OIDP 归因于错颌的总体得分和最近 6 个月生活质量的口腔影响发生率均显著低于通用型 OIDP（两种情况均 P < 0.001）。然而，CS-OIDP 归因于错颌的效应量和调整后的优势比始终大于通用型 OIDP。
尽管通用型和特定于状况的 OIDP 形式能够区分有和无正畸治疗需求的青少年，但 CS-OIDP 归因于错颌的形式具有更好的区分两组的能力。需要进一步的研究来比较这两种 OIDP 形式在具有不同水平其他口腔状况的组之间的区分能力。
