title: Age estimation based on pelvic ossification using regression models from conventional radiography.
abstract: To establish regression models for age estimation from the combination of the ossification of iliac crest and ischial tuberosity. One thousand three hundred and seventy-nine conventional pelvic radiographs at the West China Hospital of Sichuan University between January 2010 and June 2012 were evaluated retrospectively. The receiver operating characteristic analysis was performed to measure the value of estimation of 18 years of age with the classification scheme for the iliac crest and ischial tuberosity. Regression analysis was performed, and formulas for calculating approximate chronological age according to the combination developmental status of the ossification for the iliac crest and ischial tuberosity were developed. The areas under the receiver operating characteristic (ROC) curves were above 0.9 (p < 0.001), indicating a good prediction of the grading systems, and the cubic regression model was found to have the highest R-square value (R (2) = 0.744 for female and R (2) = 0.753 for male). The present classification scheme for apophyseal iliac crest ossification and the ischial tuberosity may be used for age estimation. And the present established cubic regression model according to the combination developmental status of the ossification for the iliac crest and ischial tuberosity can be used for age estimation.
authors.affiliation: Department of Forensic Pathology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, People's Republic of China.
authors.forename: Kui
authors.initials: K
authors.lastname: Zhang
authors.affiliation: Department of Forensic Pathology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, People's Republic of China.
authors.forename: Xiao-Ai
authors.initials: XA
authors.lastname: Dong
authors.affiliation: Department of Forensic Pathology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, People's Republic of China.
authors.forename: Fei
authors.initials: F
authors.lastname: Fan
authors.affiliation: Department of Forensic Pathology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, People's Republic of China. newman-zhk@163.com.
authors.forename: Zhen-Hua
authors.initials: ZH
authors.lastname: Deng
mesh_terms: D000293:Adolescent; D000328:Adult; D000365:Age Determination by Skeleton / Q000379:methods*; D005260:Female; D018732:Forensic Anthropology; D006801:Humans; D007085:Ilium / Q000000981:diagnostic imaging / Q000254:growth & development*; D007512:Ischium / Q000000981:diagnostic imaging / Q000254:growth & development*; D008297:Male; D010012:Osteogenesis; D012044:Regression Analysis; D012189:Retrospective Studies; D055815:Young Adult
keywords: Age estimation; Iliac crest; Ischial tuberosity; Ossification; Regression analysis