Abstract:
OBJECTIVES:Many studies on subadult sex estimation focus on elements that express sexually dimorphic features in adults. In contrast, diaphyseal dimensions have been shown to display sex-specific differences prior to adolescence. The current study evaluates the use of diaphyseal dimensions in subadult sex estimation. MATERIALS AND METHODS:Eighteen postcranial measurements from six long bones were collected on Lodox Statscan radiographic images of 1,310 modern South African children between birth and 12 years of age. Linear (LDA) and flexible discriminant analysis (FDA) and logistic regression were employed with single and multiple variable models with age both included and excluded from the model. Bootstrapped cross-validation was employed because some of the multiple variable subsets had small sample sizes. Each of the bootstrapped accuracies has an associated 95% confidence interval demonstrating the ranges in classification. RESULTS:Classification methods utilizing multiple variables achieved the highest bootstrapped classification accuracies (70% to 93%). The inclusion of age in the models did not consistently increase or decrease the classification accuracies. Proximal and distal breadth measurements were consistently recognized as important measurements in model creation. FDA yielded the highest overall accuracies, but the logistic regression presented with overall smaller bootstrapped 95% confidence intervals. DISCUSSION:Quantifiable sex differences were discovered in the appendicular skeleton of children between birth and 12 years of age. The high classification accuracies were likely due to using numerous predictor variables from multiple skeletal elements, which were optimized for classification using FDA. To facilitate application, a graphical user interface, KidStats, was developed.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Stull KE,L'Abbé EN,Ousley SDdoi
10.1002/ajpa.23185subject
Has Abstractpub_date
2017-05-01 00:00:00pages
64-74issue
1eissn
0002-9483issn
1096-8644journal_volume
163pub_type
杂志文章abstract::As a part of a research project on molecular variation in Central Africa, we have analyzed 10 microsatellites (CD4, CSFO, D3S1358, D18S51, D21S11, F13A1, FES, TH01, TPOX, and VWA) in the Bamileke and Ewondo from Cameroon and the Sanga and Mbenzele Pygmies from the Central African Republic (a total of 390 chromosomes)....
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/1096-8644(200007)112:3<319::AID-AJPA4>3.0.
更新日期:2000-07-01 00:00:00
abstract::Several studies on human energetics have been conducted in developed and developing countries, but very few simultaneously measured time use and energy expenditure. Only a few quantitatively compared subsistence patterns between rural and urban dwellers of an identical population. Here we present the daily physical ac...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/1096-8644(200103)114:3<258::AID-AJPA1024>3
更新日期:2001-03-01 00:00:00
abstract::A recently proposed model for canine reduction in hominid evolution (the "dual selection" model) suggests that canine reduction occurs as a result of selection for incorporation of the canines into a functional incisal field. Among the evidence used to support this model are patterns of wear and occlusion of the canin...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199603)99:3<379::AID-AJPA2
更新日期:1996-03-01 00:00:00
abstract::Maxillofacial and dental arch dimensions of the Bolivian Aymara population are age and sex dependent. Interpopulational comparisons reveal these dimensions to differ from those seen in Aleuts, Australian aborigines, and Swedes, but to be similar to those of the indigenous Taiwanese. Finally, these dimensions are not t...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330490202
更新日期:1978-08-01 00:00:00
abstract:OBJECTIVES:Early Byzantine (A.D. 330-842) monastic rules stipulated that entrants relinquished familial connections, personal belongings and secular relationships to become part of the ascetic collective that continued in death, resulting in bioarchaeological marginalization, as was the case of the monastics excavated ...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.23993
更新日期:2020-05-01 00:00:00
abstract::Isotope variations were studied in necropolises of the early (6th to 7th century CE) and central (10th to 11th century CE) medieval period located in Fruili-Venezia Giulia (Northeastern Italy). The two periods each shortly followed two great barbarian invasions that changed the politics and economy of Italy: the arriv...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.22553
更新日期:2014-08-01 00:00:00
abstract::Evidence has recently accumulated that the Singa calvaria from Sudan probably dates from Oxygen Isotope Stage 6 (>130 ka). Morphological studies have indicated a mixture of archaic and more modern human traits, but such analyses are complicated by the possibility that the vault is pathologically deformed, although the...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199809)107:1<41::AID-AJPA4
更新日期:1998-09-01 00:00:00
abstract::Dart's 1925 announcement of Australopithecus africanus (Dart: Nature 115 [1925] 195-199) was highly controversial, partly because of an interpretation of the Taung natural endocast that rested on an erroneous identification of the lambdoid suture as the lunate sulcus. Unpublished materials from the University of Witwa...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.21184
更新日期:2009-01-01 00:00:00
abstract::The reproductive cycles of 23 captive olive baboons were studied over two successive parturitions. Interbirth intervals of 450 days were reduced by 60% in comparison to wild baboons, and consisted of 145 days of postpartum amenorrhea, 3.5 cycles, and a gestation of 185 days. Dominance rank was found to be one signific...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20405
更新日期:2006-09-01 00:00:00
abstract::As evidence accumulates regarding the influence of hormones and stress-related conditions on maternal behavior, it becomes critical to better understand the relationship between physiological stress and the ability to cope with infants. Eight Japanese macaque females were observed 3 hr per week during the first 12 wee...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10150
更新日期:2003-03-01 00:00:00
abstract::Life history theory predicts a trade-off between immunostimulation and growth. Using a cross-sectional study design, this study aims to test the hypothesis that C-reactive protein (CRP) is negatively associated with height-for-age z-scores (HAZ scores) and BMI-for-age z-scores (BAZ scores) among 6- to 19-year olds (N ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22470
更新日期:2014-05-01 00:00:00
abstract::Museum curators and living communities are sometimes reluctant to permit ancient DNA (aDNA) studies of human skeletal remains because the extraction of aDNA usually requires the destruction of at least some skeletal material. Whether these views stem from a desire to conserve precious materials or an objection to dest...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21647
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVES:Maximum ingested food size (Vb ) is an empirically tested performance variable that can shed light on feeding energetics and adaptation in the masticatory system. Until now, this variable had been tested in strepsirrhines alone among primates. Here, we present the first data on Vb in a broad sample of anthro...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22779
更新日期:2015-09-01 00:00:00
abstract:OBJECTIVES:Among the diagnostic features of the Neandertal mandible are the broad base of the coronoid process and its straight posterior margin. The adaptive value of these (and other) anatomical features has been linked to the Neandertal's need to cope with a large gape. The present study aims to test this hypothesis...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23440
更新日期:2018-06-01 00:00:00
abstract::Total testosterone and dihydrotestosterone in blood serum as well as free testosterone in saliva were determined by radioimmunoassay in 110 healthy young men. The results were compared with the development of terminal hair on the trunk and limbs, with the disposition to balding and with the disposition to acne. No sig...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330880106
更新日期:1992-05-01 00:00:00
abstract::Thin mandibles and small incisors found in New World monkeys as compared with Old World monkeys suggest that there may be differences in craniofacial loading patterns between these two groups, particularly in levels of mandibular corpus twisting (Hylander, 1975, 1979a; Eaglen, 1984; Bouvier, 1986a,b). This study exami...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330820410
更新日期:1990-08-01 00:00:00
abstract::The analysis of 36 human skeletons (eight subadults, 13 males, 15 females) recovered during a cemetery relocation near Charleston, SC, provides data on health and disease for a 19th-century sample of Afro-Americans. The majority of the burials date from 1840-1870. Skeletal analysis verified some historical interpretat...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330740211
更新日期:1987-10-01 00:00:00
abstract::Hand radiograms for osseographic assessment of bone aging status were taken from more than 7,500 individuals residing in 31 different localities and belonging to 20 ethnic groups. Multiple regression analysis was used to evaluate possible associations between bone aging parameters and several climatic factors, to wit:...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199807)106:3<349::AID-AJPA
更新日期:1998-07-01 00:00:00
abstract::We classified diversity in eight new complete mitochondrial genome sequences and 41 partial sequences from living Aboriginal Australians into five haplogroups. Haplogroup AuB belongs to global lineage M, and AuA, AuC, AuD, and AuE to N. Within N, we recognize subdivisions, assigning AuA to haplogroup S, AuD to haplogr...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20426
更新日期:2006-10-01 00:00:00
abstract::Food sharing among nonkin-one of the most fascinating cooperative behaviors in humans-is not widespread in nonhuman primates. Over the past few years, a large body of work has investigated the contexts in which primates cooperate and share food with unrelated individuals. This work has successfully demonstrated that s...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22043
更新日期:2012-05-01 00:00:00
abstract:OBJECTIVES:Dental microwear is a promising tool to reconstruct animals' diet because it reflects the interplay between the enamel surface and the food items recently consumed. This study examines the sources of inter-individual variations in dietary habits in a free-ranging population of mandrills (Mandrillus sphinx) u...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23337
更新日期:2018-01-01 00:00:00
abstract::The histological method developed by Stout and Paine ([1992] Aln. J. Phys. Antropol. 87:111-115) for estimating age at death using the clavicle is tested on a known age independent sample from a nineteenth century cemetery near Spitalfriedhof St. Johann in Basel, Switzerland. The mean absolute difference between repor...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199605)100:1<139::AID-AJPA
更新日期:1996-05-01 00:00:00
abstract::This article examines social and environmental influences on the development of hypertension in a sample of 568 adults (290 men; 278 women) aged 20 years and older from Dakar, Senegal. We test the hypothesis that more recent immigrants to the city of Dakar will have lower blood pressure and lower rates of hypertension...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22122
更新日期:2012-10-01 00:00:00
abstract::Attention is called to a disputed diagnosis of trephination reported for a perforated skull of a prehistoric New England Indian. The perforation, surrounded by a saucer-like depression, is located exactly in the midline just in front of bregma. The finding of a similar lesion in a prehistoric Indian skull from the Nor...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330420310
更新日期:1975-05-01 00:00:00
abstract::Weight, stature, arm circumference, and the triceps skinfold were measured in 1,410 school children, 6 through 14 years of age, from two urban colonias in the city of Oaxaca de Juarez (n = 479), and from two rural Ladino (n = 467) and two rural Zapotec (n = 464) communities in the Valley of Oaxaca in southern Mexico. ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330540305
更新日期:1981-03-01 00:00:00
abstract:OBJECTIVES:The present study tests the effectiveness of entheseal robusticity (ER) as a potential predictor of adult age-at-death by applying multiple regression models to a large contemporary identified skeletal sample. MATERIALS AND METHODS:ER was recorded for 23 bilateral postcranial entheses on 481 adult individua...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.24083
更新日期:2020-09-01 00:00:00
abstract::Blood groups in 2,935 Roms (Gypsies) of East Slovakia show the following frequencies of phenotypes and genes: A1A2BO phentopes: A1--32.91%, A2--2.42%, B--25.21%, O--30.15%, A1B--8.45%, A2B--0.85%, A1--0.2363, A2--0.0217, B--0.1929, O--0.5491. MN phenotypes: M--27.16%, MN--51.60%, N--21.23%, m--0.5297, n--0.4703. RH ph...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330450213
更新日期:1976-09-01 00:00:00
abstract::This set of cross-sectional and longitudinal data from children and young adults in certain Bougainville and Solomon Islands populations undergoing rapid modernization during the period 1966-1986 reveals very different responses to essentially the same stimuli-the introduction and widespread availability of western di...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22141
更新日期:2012-11-01 00:00:00
abstract::Seasonal change in time spent for terrestrial behavior of chimpanzees was investigated from the viewpoint of the distribution of food and microclimate in the forest at Bossou, Guinea, West Africa. Daily and monthly data for activity budgets of three focal animals, climatic variables in the forest, and indices of fruit...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10342
更新日期:2004-05-01 00:00:00
abstract::Paranthropus is distinctive among hominoids in its possession of a greatly thickened hard palate. Although traditionally considered a structural adaptation to counter high-magnitude masticatory stress, alternative developmental models are equally viable. Three models of palatal thickening were evaluated in this study....
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199707)103:3<375::AID-AJPA
更新日期:1997-07-01 00:00:00