Computed tomographic evaluation of the acetabulum for age estimation in an Indian population using principal component analysis and regression models

Journal article


Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2022. Computed tomographic evaluation of the acetabulum for age estimation in an Indian population using principal component analysis and regression models. International Journal of Legal Medicine. 136 (6), pp. 1637-1653. https://doi.org/10.1007/s00414-022-02856-4
AuthorsWarrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T.
Abstract

The acetabulum presents as a well-preserved evidence, resistant to taphonomic degradation changes and can thus aid in the age estimation process. A CT-based examination of the acetabulum can further help simplify the process of age estimation by overcoming the time-consuming process of maceration and by doing away with the interference resulting from tissue remnants. The aim of the present study was to evaluate the role of the acetabulum for age estimation in an Indian population through a CT-based examination, using principal component analysis and regression models. CT images of 400 individuals aged 10 years and above were evaluated according to the features defined in the San-Millán-Rissech method of age estimation. Five of the seven morphological features defined by San-Millán-Rissech were appreciable on CT scans, and, to enable further statistical analysis, a cumulative score was computed using these five features. A significant correlation of 0.835 and 0.830 for the right and left acetabulum, respectively, was obtained between computed cumulative scores and chronological age of individuals. No significant sex differences were observed in the scoring of different age-related morphological changes. Regression models were generated using individual features and cumulative scores. Regression models derived using the cumulative score yielded inaccuracy values of 9.67 years for the right acetabulum and 9.15 years for the left acetabulum. Inaccuracy and bias values were computed for each individual feature, as well as for each decade, using mean point ages established within the original study. Amongst the various features, acetabular rim porosity was seen to have the lowest values of inaccuracy (11.50 years) and bias (2.32 years) and activity on outer edge of acetabular fossa the highest (inaccuracy and bias values of 22.36 years and 21.50 years, respectively). Taking into consideration this differential contribution towards age estimation, weighted coefficients and mean point ages for different morphological features were determined using principal component analysis. Subsequently, summary age models were generated from the obtained weighted coefficients and mean age values. Summary age models derived in the present study yield lower estimates of inaccuracy of 7.60 years for the right acetabulum and 7.82 years for the left acetabulum. While regression models derived in the present study allow for age estimation using even a single appreciable feature, summary age models take into account the contribution of each feature and generate more accurate estimates of age. Both statistical computations yield reduced error rates and thus can render greater applicability to the acetabulum in forensic age estimation.

KeywordsAcetabulum; Age estimation; Computed tomography; Forensic anthropology; Human identification; Linear regression models; Principal component analysis; Summary age models
Year2022
JournalInternational Journal of Legal Medicine
Journal citation136 (6), pp. 1637-1653
PublisherSpringer
ISSN1437-1596
Digital Object Identifier (DOI)https://doi.org/10.1007/s00414-022-02856-4
Web address (URL)https://link-springer-com.derby.idm.oclc.org/article/10.1007/s00414-022-02856-4
https://pubmed.ncbi.nlm.nih.gov/35715653/
Output statusPublished
Publication dates
Online18 Jun 2022
Publication process dates
Accepted07 Jun 2022
Deposited11 Jul 2024
Permalink -

https://repository.derby.ac.uk/item/q55w4/computed-tomographic-evaluation-of-the-acetabulum-for-age-estimation-in-an-indian-population-using-principal-component-analysis-and-regression-models

  • 7
    total views
  • 0
    total downloads
  • 0
    views this month
  • 0
    downloads this month

Export as

Related outputs

A statistical evaluation of the sexual dimorphism of the acetabulum in an Iberian population
Warrier, V. and San-Millan, M. 2024. A statistical evaluation of the sexual dimorphism of the acetabulum in an Iberian population. International Journal of Legal Medicine. pp. 1-17. https://doi.org/10.1007/s00414-024-03334-9
Forensic Anthropology
Shedge, R, Guite, K., Warrier, V., Kanchan, T. and Krishan, K. 2024. Forensic Anthropology. in: Puri, A., Mahalakshmi, N., Chauhan, T., Mishra, A. and Bhatnagar, P. (ed.) Fundamentals in Forensic Biology Singapore Springer Link. pp. 357-384
Forensic Entomology
Guite, K., Shedge, R., Warrier, V. and Kanchan, T. 2024. Forensic Entomology. in: Puri, A., Mahalakshmi, N., Chauhan, T., Mishra, A. and Bhatnagar, P. (ed.) Fundamentals in Forensic Biology Singapore Springer Link. pp. 415-449
Suicide Predictors and Statistics
Warrier, V. and Kanchan, T. 2024. Suicide Predictors and Statistics. in: Reference Module in Social Sciences Netherlands Elsevier. pp. 1-18
Applicability of the Suchey-Brooks method for age estimation in an Indian population: A computed tomography-based exploration using Bayesian analysis and machine learning
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2024. Applicability of the Suchey-Brooks method for age estimation in an Indian population: A computed tomography-based exploration using Bayesian analysis and machine learning. Medicine, Science, and the Law. 64 (2), pp. 126-137. https://doi.org/10.1177/00258024231188799
Machine learning and regression analysis for age estimation from the iliac crest based on computed tomographic explorations in an Indian population
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2023. Machine learning and regression analysis for age estimation from the iliac crest based on computed tomographic explorations in an Indian population. Medicine, Science, and the Law. 64 (3). https://doi.org/10.1177/00258024231198917
Applicability of the six-phase method for auricular age estimation in an Indian population: A CT-based study
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2023. Applicability of the six-phase method for auricular age estimation in an Indian population: A CT-based study. Medicine, Science, and the Law. 12. https://doi.org/10.1177/00258024231206864
An evaluation of the three-component pubic symphyseal human age estimation method: a CT-based exploration in an Indian population
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2023. An evaluation of the three-component pubic symphyseal human age estimation method: a CT-based exploration in an Indian population. The Science of Nature. 110 (21), pp. 1-15. https://doi.org/10.1007/s00114-023-01851-y
McKern-Stewart method as a technique for analysing age related pubic symphyseal changes: A systematic review and meta-analysis
Warrier, V., Shedge, R., Krishan, K. and Kanchan, T. 2023. McKern-Stewart method as a technique for analysing age related pubic symphyseal changes: A systematic review and meta-analysis. Medicine, Science, and the Law. 63 (1), pp. 31-41. https://doi.org/10.1177/00258024221092196
Computed tomographic age estimation from the iliac crest and ischial tuberosity in an Indian population using supervised machine learning approaches
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2023. Computed tomographic age estimation from the iliac crest and ischial tuberosity in an Indian population using supervised machine learning approaches. Anthropologischer Anzeiger. 81 (3), pp. 301 - 314. https://doi.org/10.1127/anthranz/2023/1723
An evaluation of the Gilbert-McKern pubic symphyseal age estimation method using Bayesian statistics and principal component analysis: A computed tomographic exploration in an Indian population
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2023. An evaluation of the Gilbert-McKern pubic symphyseal age estimation method using Bayesian statistics and principal component analysis: A computed tomographic exploration in an Indian population. Anthropologischer Anzeiger. 80 (3), pp. 341-357. https://doi.org/10.1127/anthranz/2023/1702
Age estimation from iliac auricular surface using Bayesian inference and principal component analysis: a CT-based study in an Indian population
Warrier, V., Shedge, R., Kumar Garg, P., Gupta Dixit, S., Krishan, K. and Kanchan, T. 2023. Age estimation from iliac auricular surface using Bayesian inference and principal component analysis: a CT-based study in an Indian population. Forensic Science, Medicine and Pathology. pp. 1-17. https://doi.org/10.1007/s12024-023-00637-y
Clothes and the evidences they carry: A perspective on its forensic examination
Warrier, V. and Kanchan, T. 2022. Clothes and the evidences they carry: A perspective on its forensic examination. Journal of Indian Academy of Forensic Medicine. 43 (3), pp. 296-299. https://doi.org/10.5958/0974-0848.2021.00076.2
Applicability of the Calce method for age estimation in an Indian population: A clinical CT-based study
Warrier, V., Shedge, R., Kumar Garg, P., Dixit, S. G., Krishan, K. and Kanchan, T. 2022. Applicability of the Calce method for age estimation in an Indian population: A clinical CT-based study. Legal Medicine. 59, pp. 1-6. https://doi.org/10.1016/j.legalmed.2022.102113
Forensic age estimation using conventional radiography of the medial clavicular epiphysis: A systematic review
Shedge, R., Kanchan, T., Warrier, V., Dixit, S.G. and Krishan, K. 2021. Forensic age estimation using conventional radiography of the medial clavicular epiphysis: A systematic review. Medicine, Science and the Law. 61 (2). https://doi.org/10.1177/0025802420988223
Age estimation from sternebral fusion in an Indian population – A computed tomographic evaluation
Shedge, R., Kanchan, T., Kumar Garg, P., Gupta Dixit, S., Warrier, V. and Krishan, K. 2021. Age estimation from sternebral fusion in an Indian population – A computed tomographic evaluation. Legal Medicine. 53, pp. 1-5. https://doi.org/10.1016/j.legalmed.2021.101951
Computed tomographic age estimation from the pubic symphysis using the Suchey-Brooks method: A Systematic Review and Meta-analysis
Warrier, V., Shedge, R., Garg, P.K., Dixit, S.G., Krishan, K. and Kanchan, T. 2021. Computed tomographic age estimation from the pubic symphysis using the Suchey-Brooks method: A Systematic Review and Meta-analysis. Forensic Science International. 325, pp. 1-9. https://doi.org/10.1016/j.forsciint.2021.110811
CT-based evaluation of the acetabulum for age estimation in an Indian population
Warrier, V., Kanchan, T., Garg, P.K., Dixit, S.G., Krishan, K. and Shedge, R. 2021. CT-based evaluation of the acetabulum for age estimation in an Indian population. International Journal of Legal Medicine. 136 (3), pp. 785-795. https://doi.org/10.1007/s00414-021-02757-y
Computed tomographic analysis of medial clavicular epiphyseal fusion for age estimation in Indian population
Shedge, R., Kanchan, T., Garg, P.K., Dixit, S.G., Warrier, V., Khera, P. and Krishan, K. 2020. Computed tomographic analysis of medial clavicular epiphyseal fusion for age estimation in Indian population. Legal Medicine. 46, pp. 1-7. https://doi.org/10.1016/j.legalmed.2020.101735
Forensic entomology: Applications in investigations
Warrier, V. and Shedge, R. 2020. Forensic entomology: Applications in investigations. Journal of Indian Academy of Forensic Medicine. 41 (3), pp. 219-220. https://doi.org/10.5958/0974-0848.2019.00064.2
Advances in firearm serial number restoration
Warrier, V. and Shedge, R. 2020. Advances in firearm serial number restoration. Journal of Indian Academy of Forensic Medicine. 42 (1), pp. 75-76. https://doi.org/10.5958/0974-0848.2020.00020.2