Anat Cell Biol.  2015 Dec;48(4):275-283. 10.5115/acb.2015.48.4.275.

Craniometric study for sex determination in a Thai population

• Mahakkanukrauh P
• Sinthubua
• Prasitwattanaseree S
• Ruengdit S
• Singsuwan
• Praneatpolgrang S
• Duangto P

• KMID: 2133268
• DOI: http://doi.org/10.5115/acb.2015.48.4.275

Abstract

Sex determination is an important step in biological identification from skeletal remains, especially in forensic circumstances. Many authors suggested that the morphological study was more subjective than the metric. There are various craniometric studies in different populations. They revealed that there was population-specific for the sex discriminant equation derived from each population. Thus, the present study aimed to evaluate sexual dimorphism and develop the discriminant function from 200 Thai skulls. Twenty-five standard cranial measurements were examined. The results revealed that males' cranium were statistically significant larger than females' in all measurements (P<0.05), except for minimum breadth of nasal bone. Sexual dimorphism index also expressed relatively high male/female ratio indicating great sexual dimorphism. The best practical equation for sex determination with six measurements (maximum cranial length, bizygomatic breadth, biauricular breadth, nasal height, biorbital breadth and right mastoid length) was derived from a stepwise discriminant method. This equation with 90.6% accuracy (91.1% in male and 90.0% in female) can provide valuable application utilizing in sex determination from skull in a Thai population.

Keyword

Sex determination; Skull; Craniometry; Thai

MeSH Terms

Asian Continental Ancestry Group*
Cephalometry
Humans
Male
Mastoid
Nasal Bone
Skull

Figure

• 

  Fig. 1 Drawing of skull measurements measured in this study. Written descriptions of these measurements can be found in Table 1.

Reference

1. Krogman WM, Iscan MY. The human skeleton in forensic medicine. 2nd ed. Springfield, IL: Charles C. Thomas;1986.

2. EI-Najjar MY, McWilliams KR. Forensic anthropology: the structure, morphology, and variation of human bone and dentition. Springfield, IL: Charles C. Thomas;1978.

3. St. Hoyme LE, Iscan MY. Determination of sex and race: accuracy and assumptions. In : Iscan MY, Kennedy KA, editors. Reconstruction of Life from the Skeleton. New York: Wiley-Liss;1989. p. 53–94.

4. Byers SN. Introduction to forensic anthropology. 2nd ed. Boston, MA: Pearson Education Inc.;2005.

5. Phenice TW. A newly developed visual method of sexing the os pubis. Am J Phys Anthropol. 1969; 30:297–301.

6. Meindl RS, Lovejoy CO, Mensforth RP, Don Carlos L. Accuracy and direction of error in the sexing of the skeleton: implications for paleodemography. Am J Phys Anthropol. 1985; 68:79–85.

7. MacLaughlin SM, Bruce MF. The accuracy of sex identification in European skeletal remains using the phenice characters. J Forensic Sci. 1990; 35:1384–1392.

8. Choi BY, Lee KS, Han SH, Park DK, Lim NH, Koh KS, Kim HJ, Kang HS. Group analysis using the metric measurements of Korean skulls. Korean J Phys Anthropol. 2001; 14:207–215.

9. Choi BY, Chung IH. Sex discrimination with the metric measurements of the Korean dried pelvic bones by discriminant function analysis. Korean J Phys Anthropol. 1999; 12:151–158.

10. Lee JH, Kim YS, Lee UY, Park DK, Jeong YG, Lee NS, Han SY, Kim KY, Han SH. Sex determination using upper limb bones in Korean populations. Anat Cell Biol. 2014; 47:196–201.

11. Giles E, Elliot O. Sex determination by discriminant function analysis of crania. Am J Phys Anthropol. 1963; 21:53–68.

12. De Villiers H. Sexual dimorphism of the skull of the South African Bantu-speaking Negro. S Afr J Sci. 1968; 64:118–124.

13. Hanihara K. Sex diagnosis of Japanese skulls and scapulae by means of discriminant functions. J Anthropol Soc Nippon. 1959; 67:21–27.

14. Kajanoja P. Sex determination of Finnish crania by discriminant function analysis. Am J Phys Anthropol. 1966; 24:29–33.

15. Holland TD. Sex determination of fragmentary crania by analysis of the cranial base. Am J Phys Anthropol. 1986; 70:203–208.

16. Townsend GC, Richards LC, Carroll A. Sex determination of Australian Aboriginal skulls by discriminant function analysis. Aust Dent J. 1982; 27:320–326.

17. Steyn M, Iscan MY. Sexual dimorphism in the crania and mandibles of South African whites. Forensic Sci Int. 1998; 98:9–16.

18. Franklin D, Freedman L, Milne N. Sexual dimorphism and discriminant function sexing in indigenous South African crania. HOMO. 2005; 55:213–228.

19. Sangvichien S, Boonkaew K, Chuncharunee A, Komoltri C, Piyawinijwong S, Wongsawut A, Namwongsa S. Sex determination in Thai skulls by using craniometry: multiple logistic regression analysis. Siriraj Med J. 2007; 59:216–221.

20. Dayal MR, Spocter MA, Bidmos MA. An assessment of sex using the skull of black South Africans by discriminant function analysis. HOMO. 2008; 59:209–221.

21. Rooppakhun S, Surasith P, Vatanapatimakul N, Kaewprom Y, Sitthiseripratip K. Craniometric study of Thai skull based on three-dimensional computed tomography (CT) data. J Med Assoc Thai. 2010; 93:90–98.

22. Spradley MK, Jantz RL. Sex estimation in forensic anthropology: skull versus postcranial elements. J Forensic Sci. 2011; 56:289–296.

23. Saini V, Srivastava R, Rai RK, Shamal SN, Singh TB, Tripathi SK. An osteometric study of northern Indian populations for sexual dimorphism in craniofacial region. J Forensic Sci. 2011; 56:700–705.

24. Buikstra JE, Ubelaker DH. Standards for data collection from human skeletal remains. Arkansas Archaeological Survey Research Series no. 44. Fayetteville, NC: Arkansas Archaeological Survey;1994.

25. Jorgensen JB. Anthropometric and anthroposcopic technique. Copenhagen: University of Copenhagen, Anatomical Institute;1986.

26. Martin R. Lehrbuch der anthropologie. Zweiter Band: Kraniologie, Osterologie. Jena: Gustav Fischer Verlag;1928.

27. Kieser JA, Groeneveld HT. Multivariate sexing of the human viscerocranium. J Forensic Odontostomatol. 1986; 4:41–46.

28. Konigsberg LW, Algee-Hewitt BF, Steadman DW. Estimation and evidence in forensic anthropology: sex and race. Am J Phys Anthropol. 2009; 139:77–90.

29. Green H, Curnoe D. Sexual dimorphism in southeast Asian crania: a geometric morphometric approach. HOMO. 2009; 60:517–534.

30. Giles E. Sex determination by discriminant function analysis of the mandible. Am J Phys Anthropol. 1964; 22:129–135.