Validity assessment and determination of the cutoff value for the Index of Complexity, Outcome and Need among 12-13 year-olds in Southern Chinese

作     者：Zheng-Yu Liao Fan Jian Hu Long Yun Lu Yan Wang Zhi Yang Yu-Wei He Peter Wamalwa Jing Wang Nian-Song Ye Sheng Wang Wen-Li Lai 

作者机构：Department of OrthodonticsWest China School of StomatologySichuan UniversityChengduChina State Key Laboratory of Oral DiseasesSichuan UniversityChengduChina Department of OrthodonticsCollege of StomatologyNanchang UniversityNanchangChina College of Stomatology.Dalian Medical UniversityDalianChina Joint Orthodontics-orthognathic Surgery CenterShanghai Ninth People’s HospitalShanghai Jiao Tong UniversityShanghaiChina Clinical Supervisor and Lead DentistLatrobe Community Health ServiceMorwellAustralia 

出 版 物：《International Journal of Oral Science》 (国际口腔科学杂志（英文版）)

年 卷 期：2012年第4卷第2期

页      面：88-93页

核心收录：

学科分类：1003[医学-口腔医学] 100302[医学-口腔临床医学] 10[医学] 

主　　题：Index of Complexity, Outcome, and Need occlusal index treatment need 

摘      要：To validate the use of the Index of Complexity, Outcome and Need （ICON） in assessing orthodontic treatment need among 12-13 year-olds in southern China, we determined the threshold value of ICON based on Chinese orthodontists＇ judgments. The samples consisted of 335 students in grade 7 from 16 randomly selected middle schools in Chengdu, China. Three associate professors provided ICON scores for each participant and the results were compared with the gold standard judgments from 25 experts on treatment needs. Based on the gold standard, 195 casts belonged to the treatment category, while the rest 140 belonged to the no-treatment category. With the international cutoff point of 43, the sensitivity and specificity of the iCON score were 0.29 and 0.98. The best compromise between sensitivity and specificity in Chengdu, compared with the gold standard, was found at a cutoff point of 29, and the sensitivity and specificity were 0.88 and 0.83. When used to evaluate the treatment need of 12-13 year-olds in southern China, the international ICON cutoff value did not correspond well with Chinese orthodontists＇ judgments; a lower cutoff value of 29 offered a ~reater sensitivitv and soecificitv with respect to exoert orthodontists＇ oerceotion of treatment need.