An assessment of sex using the skull of black South Africans by discriminant function analysis

Dayal, Manisha; Spocter, Muhammad A.; Bidmos, Mubarak A.

doi:10.1016/j.jchb.2007.01.001

Cited by 156 publications

(138 citation statements)

References 25 publications

Supporting

Mentioning

102

Contrasting

Unclassified

Order By: Relevance

“…Bizygomatic breadth (BZBr) showed the highest accuracy of 82.2 followed by Mastoid bregma height (MBrHt) 80.5 %. The result is in support with the antecedent studies exhibiting a consistent sexual dimorphism in bizygomatic breadth in the populations of different geographical regions utilizing traditional osteometric methods, cephalometrics and geometric morphometrics [13][14][15]. Gupta, et al [16], also found bizygomatic breadth to be a highly dimorphic variable in Indian population with classification accuracy of 86.3% using cephalometry.…”

Section: Discussionsupporting

confidence: 86%

“…Their results were corroborated by further study investigating dimorphism in cranial shape of the same population group where the best sex discriminator was found to be the maximum lateral projection of the zygomatic arches, which is metrically bizygomatic breadth [14]. Dayal, et al [15], examined same population using traditional osteometric method, which provided homogeneous results; bizygomatic breadth was selected as best discriminator as it provided an average predictive precision of 75.8%. The highest precision (80.8%) was achieved by a discriminant function of four facial parameters, i.e., cranial length, basion-bregma, bizygomatic breadth, and nasal height.…”

Section: Discussionmentioning

confidence: 86%

See 1 more Smart Citation

Sexual Dimorphism of North Indian Crania and its Forensic Application

Saini¹,

Saini²

2016

J For Med Leg Aff

View full text Add to dashboard Cite

Sex determination is a major challenge for forensic anthropologist in the medicolegal context. It constitutes initial step in personal identification from skeletal remains and is indispensable further to define age and stature of the deceased. There have been several studies on sex determination from different skeletal parts using osteometric and morphological approaches. Degree of sexual dimorphism and osteological standards vary across time and space. This requires need for valid population specific standards for sex determination. Skull is considered as the most discriminating after pelvis among skeletal parts.As in India, the population varies to a large extent, assortment of skeleton cannot be made representing the whole country in general; therefore, regional studies must be promoted. Each population group thus needs its own sex specific osteometric standards. No large scale study on North Indian skull was conducted. The aim of the present study is to provide the population specific sex discriminating osteometric standards to aid identification.A total of 483 crania (316 male and 167 females) with age range of 18-70 years of North Indian origin were studied using traditional osteometric methods. Twenty one traditional variables were measured. The p -value shows that all parameters were statistically significant and higher in males. The best parameters are bizygomatic breadth (BZBr) and mastoid bregma height (MBrHt) which were reflected by highest t values and highest classification accuracies i.e. 82.2 and 80.5% respectively. In stepwise analysis accuracy reached up to 84.75% with the selection of five variables named Bizygomatic Breadth (BZBr), Mastoid Bregma Height (MBrHt), Maximum Cranial Length (MaxCLt), Biauricular Breadth (BAUBr) and Maximum Cranial Breadth (MaxCBr). On the other hand, bizygomatic breadth (BZBr) alone provided a sex classification accuracy of 82.2 % in direct analysis.

show abstract

Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 86%

Sexual Dimorphism of North Indian Crania and its Forensic Application

Saini¹,

Saini²

2016

J For Med Leg Aff

View full text Add to dashboard Cite

show abstract

“…In this study, sex estimations rather than determinations will be produced as they are not performed on a population with documented sex. (Ousley and Jantz, 2012) Prior studies have shown that different populations have different identifiable factors for sex estimation (Charisi et al, 2011;Dayal et al, 2008;Frutos, 2005;Králík et al, 2014;Šlaus and Tomičić, 2005). This is the reason why a single, global method cannot be developed.…”

Section: Introductionmentioning

confidence: 99%

Assessing size and strength of the clavicle for its usefulness for sex estimation in a British medieval sample

Atterton

Groote

Eliopoulos

2016

HOMO

View full text Add to dashboard Cite

The construction of the biological profile from human skeletal remains is the foundation of anthropological examination. However, remains may be fragmentary and the elements usually employed, such as the pelvis and skull, are not available. The clavicle has been successfully used for sex estimation in samples from Iran and Greece. In the present study the aim was to test the suitability of the measurements used in those previous studies on a British Medieval population. In addition, the project tested whether discrimination between sexes was due to size or clavicular strength.The sample consisted of 23 females and 25 males of pre-determined sex from two medieval collections: Poulton and Gloucester. Six measurements were taken using an osteometric board, sliding callipers and graduate tape. In addition, putty rings and bi-planar radiographs were made and robusticity measures calculated. The resulting variables were used in stepwise discriminant analyses.The linear measurements allowed correct sex classification in 89.6% of all individuals.This demonstrates the applicability of the clavicle for sex estimation in British populations.The most powerful discriminant factor was maximum clavicular length and the best combination of factors was maximum clavicular length and circumference. This result is similar to that obtained by other studies.To further investigate the extent of sexual dimorphism of the clavicle, the biomechanical properties of the polar second moment of area J and the ratio of maximum to minimum bending rigidity are included in the analysis. These were found to have little influence when entered into the discriminant function analysis.

show abstract

“…Giles et al, studied on mandibles of American whites and blacks with eight variables and discriminated sex with 84% accuracy, whereas Hanihara et al, had used four variables of mandibles belonging to Japanese population and discriminated the sex by 85% accuracy [7,8]. Dayal et al, studied six mandibular measurements of South African Blacks and noted that average accuracy for sexing varies from 80 to 85% [9]. In all the above studies location of the mandibular foramen was not considered at all.…”

Section: Shiny Vinila B H Eshwar T John Jims V Sri Kavya T Sexualmentioning

confidence: 99%

Sexual Dimorphism in the Location of Mandibular Foramen Using Discriminative Function Analysis Test

H¹,

Eshwar²,

Jims³

et al. 2017

IJAR

View full text Add to dashboard Cite

Aim:To determine the sexual dimorphism of mandible based on the location of the mandibular foramen using discriminative function analysis test. Materials and Methods:This study was carried out on 70 mandibles (43 male, 27 female) which were collected from the department of Anatomy. A total of 140 mandibular foramina (70 left and 70 right) were included in the study. The distance from the center of mandibular foramen to various anatomical land marks were measured. From the center of mandibular foramen to the anterior border of ramus of mandible, From the center of mandibular foramen to the posterior border of ramus of mandible, From the center of mandibular foramen to the inferior borders of ramus of the mandible and From the center of mandibular foramen to the the mandibular notch were measured using digital vernier calipers and data was analyzed using spss 16 th version. Results:The results showed that there is a significant difference between the distance from the center of the mandibular foramen to the anterior border and mandibular notch.Stepwise and direct discriminative analysis shows sexual dimorphism with 90% accuracy bearing Wilkin's lambda and Eigen values as 0.475 and 1.104 respectively. Conclusion:In the present study the sex of the mandible was determined with 90% accuracy by using the distance from the center of the mandibular foramen to the borders of ramus of the mandibles.

show abstract

An assessment of sex using the skull of black South Africans by discriminant function analysis

Cited by 156 publications

References 25 publications

Sexual Dimorphism of North Indian Crania and its Forensic Application

Sexual Dimorphism of North Indian Crania and its Forensic Application

Assessing size and strength of the clavicle for its usefulness for sex estimation in a British medieval sample

Sexual Dimorphism in the Location of Mandibular Foramen Using Discriminative Function Analysis Test

Contact Info

Product

Resources

About