Petteri Oura, Jaro Karppinen, Jaakko Niinimäki, Juho-Antti Junno, Sex estimation from dimensions of the fourth lumbar vertebra in Northern Finns of 20, 30, and 46 years of age, Forensic Science International, Volume 290, 2018, Pages 350.e1-350.e6, ISSN 0379-0738, https://doi.org/10.1016/j.forsciint.2018.07.011
Sex estimation from dimensions of the fourth lumbar vertebra in Northern Finns of 20, 30, and 46 years of age
|Author:||Oura, Petteri1,2,3; Karppinen, Jaro1,2,4; Niinimäki, Jaakko1,3;|
1Medical Research Center Oulu, Faculty of Medicine, University of Oulu and Oulu University Hospital, PO Box 5000, FI-90014, Oulu, Finland
2Center for Life Course Health Research, Faculty of Medicine, University of Oulu, PO Box 5000, FI-90014, Oulu, Finland
3Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, PO Box 5000, FI-90014, Oulu, Finland
4Finnish Institute of Occupational Health, Aapistie 1, FI-90220, Oulu, Finland
5Department of Archaeology, Faculty of Humanities, University of Oulu, PO Box 5000, FI-90014 Oulu, Finland
6Cancer and Translational Medicine Research Unit, Faculty of Medicine, University of Oulu, PO Box 5000, FI-90014, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 1.1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019111438005
|Publish Date:|| 2019-11-14
Background: Accurate sex estimation (sexing) is crucial for successful forensic identification. For the cases in which only a part of the skeleton or individual skeletal elements are available, we investigated the sex estimation potential of the fourth lumbar vertebra (L4) among 20-, 30-, and 46-year-old Northern Finns.
Material and methods: Magnetic resonance imaging scanned living subsamples of the Northern Finland Birth Cohort 1966 (scan at 46 years, n = 1363) and the Northern Finland Birth Cohort 1986 (repeated scans at 20 and 30 years, n = 375) provided the material for the study. After screening the scans for vertebral pathologies, we measured the maximum and minimum widths, depths, and heights of the L4 body. The mean vertebral width, depth and height were calculated together with vertebral cross-sectional area and volume. Sex estimations were performed using univariate and multivariate logistic regression analysis.
Results: We detected marked sex discrepancy in all the studied parameters of L4 (p < 0.001). In the groups aged 20, 30, and 46 years, the regression models reached correct sex estimation rates of 86.4%, 87.7%, and 82.8%, respectively. At each time point, multivariate models proved more accurate than univariate models. Men showed consistently lower correct sex estimation rates than women.
Conclusion: Among 20-, 30-, and 46 year-old Finns, combining the measurements of width, depth, and height of the L4 body can be used to estimate sex with an accuracy of >80%. Vertebral width, depth, and height seem to yield as accurate sex estimates as more complicated vertebral parameters.
Forensic science international
|Pages:||350.e1 - 350.e6|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
3126 Surgery, anesthesiology, intensive care, radiology
616 Other humanities
© 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.