桡骨性别鉴定的研究

目的通过对桡骨的测量,使用Fisher判别分析方法,建立了中国人桡骨性别判定的判别方程。方法本研究共测量了来自全国九省区的已知生前确切性别的210个个体的左右侧桡骨,其中男性160例,女性50例,年龄范围18岁～76岁。测量指标共有8项,使用SPSS软件,进行了桡骨左、右侧及男女性别间测量数据差异的t检验。根据对测量数据左、右侧及男女性别的检验,将差异不显著的测量项目剔除,建立了左、右侧桡骨性别判定的方程。结果单一测量指标的性别判定方程,除性别差异不显著的测量项目颈干角之外,性别判别率为57.7%～92.3%,桡骨长度测量指标的性别判别率为82.4%～88.5%,桡骨中段测量指标的性别判别率为77.8%～91.7%。完整桡骨测量指标的性别判别率91.7%～99.5%。结论本研究建立的桡骨性别判定方法,性别判定准确率高,使用方便,为中国人桡骨的性别判定提供了科学依据。     

中国人胫骨的性别判定

目的建立中国人胫骨性别判定的方程。方法测量来自全国14省区已知生前确切性别的180例（男150例,女30例）个体的跫侧胫骨的13项指标,使用统计软件SPSS13．0,对所获得的测量数据进行同一性别双侧间以及不同性别同侧间胫骨测量项目的t检验,最后用Fisher判别分析法,建立国人胫骨性别判定的方程式。结果单一测量指标的性别判别方程13组,其性别判别准确率为66．7％～96．7％,总判别方程的判别准确率为男性97．3％,女性93．3％。结论本研究提供的判别方程式判别准确率较高,适用于中国人胫骨的性别判定。     

中国人股骨的性别鉴定

目的建立中国人股骨性别判定的方程。方法测量来自全国14省区的已知生前确切性别180例（男150例,女30例）个体的双侧股骨21项指标。使用统计软件SPSS13．0对获得的股骨测量项目数据,进行同一性别双侧间及不同性别同侧间的t检验,然后采用Fisher判别分析法和Bayes逐步判别分析法,建立股骨性别判定的系列判别函数。结果股骨单一测量指标中男性判别率最高指标为股骨上髁宽,为94．0％,女性判别率最高指标为股骨头周与股骨颈垂直径,为93．3％,总判别方程的判别率为男性98．0％,女性93．3％。结论本研究提供的判别方程式判别准确率较高,适用于中国人股骨的性别判定。     

下颌角下颌支部残碎下颌骨判定性别的研究

目的建立中国人高度残碎下颌骨的性别判定方法。方法测量了国内 8个省市的已知性别的 16 0具尸骨的下颌骨 (其中男性 10 8例 ,女性 5 2例 ,年龄范围 18～ 75岁 ) ,选择了下颌骨左侧的下颌角、下颌支两部位的 15项指标的测量值 ,利用SPSS软件进行统计分析 ,筛选出性别差异显著的指标 ,使用判别分析方法 ,建立高度残碎下颌骨判定性别的判别方程。结果得到高度残碎下颌骨性别判别方程共计 4 4组 ,下颌角 3组 ,下颌支2 5组 ,下颌角和下颌支联合判定 16组。下颌角性别判别方程的最高性别判别率男性 6 9 4 % ,女性 75 % ,综合70 6 % ,下颌支最高性别判别率男性 77 8% ,女性 80 8% ,综合 75 6 % ;下颌角与下颌支联合判定的最高性别判别率男性 75 0 % ,女性 84 6 % ,综合 75 6 %。结论本研究可适用于刑事案件以及火灾、飞机失事等自然灾害事件以及考古工作中的高度残碎下颌骨的性别判定。     

中国南方汉族人残碎股骨上端的性别判定

目的建立中国南方地区汉族人残碎股骨上端性别判别方法。方法对国内南方九省市的已知确切性别的100具股骨进行研究，测量股骨上端的7项指标，应用SPSS统计软件对数据进行分析，建立性别判别方程。结果7项指标中6项指标存在显著的性别差异，建立全指标及单指标的性别判别方程，判别率在59．6％～92．9％。结论建立的性别判别方程可以用于法医学实践。     

中国汉族人腰椎的性别差异

目的提供体质人类学的数据资料 ,建立中国汉族腰椎性别判别的方法。方法根据人体骨骼测量方法 ,测量 117付 (男 80 ,女 3 7付 ,年龄 17～ 90岁 )中国汉族人腰椎的 10项指标 ;选择性别差异显著的椎测量项目 ,建立腰椎及各腰椎的性别判别方程。结果第一至第五腰椎均有 5个以上的测量项目的数据存在显著意义的性别差异 (P<0 0 5 ) ;建立的 5个腰椎及各腰椎的性别判别方程 ,判别率在 69 4%～ 91 8% ,以 5个腰椎的多项指标的性别判别方程的准确率最高 (91 8% ) ,其次为第一腰椎 (84 5 % )和第二腰椎 (82 1% )。结论中国汉族人腰椎的性别差异以第一和第二腰椎明显 ,腰椎性别判定以多项指标的准确率高     

中国汉族成人甲状软骨的性别判定

目的 建立中国汉族成人甲状软骨性别判别的函数方程。方法 对142例中国汉族成人甲状软骨(男73例,女69例)进行大体测量,选择7个性别差异非常显著的测量指标,然后采用Fisher判别分析法和Bayes逐步判别分析法,建立判定甲状软骨性别的系列判别函数。结果 建立了13个甲状软骨的性别判别方程,完整或大部分完整的甲状软骨性别判别准确率均达100％,残缺的达90％。结论 中国汉族成人甲状软骨性别差异明显,运用所建方程能够判定甲状软骨的性别。     

中国汉族男女股骨性别差异

经测量235副（男158副，女77副）已知生前确切性别的成年股骨的21项指标，对单一测量项目判定股骨性别的效果进行了检验。结果表明，21项测量指标中有11项单一指标的判别效果达80％以上。采用Fisher两类判别分析法对测量数据进行统计处理，得到根据单侧股骨测量值判别性别的函数方程14个；对南方和北方人群组的测量数据，分别用Fisher两类判别法进行统计，建立了根据单侧股骨测量值判断性别的函数34个，判别率最高达98．23％。与盲测判别准确率相近。该法可用于法医人类学的个体识别。     

残碎下颌骨体（PM1～M2）判定性别的研究

目的　建立高度残碎下颌骨性别判定的判别方程。方法　对国内 8个省市的已知确切性别的 16 0具尸骨 (男 10 8例 ,女 5 2例 ,年龄范围 18～ 75岁 )的下颌骨进行研究 ,测量了下颌骨左侧颌体 (PM1～M2 )段的 2 4项测量指标 ,经社会科学软件包 (SPSS)对测量数据分析 ,筛选出性别差异显著的指标。结果　得到残碎下颌骨性别判别方程共计 14组。最高性别判别率男性为 78 7% ,女性为 76 9% ,综合为 73 8%。结论　该方法适用于碎尸、火灾、飞机失事等案事件以及考古中的高度残碎后牙段下颌骨的性别判别。     

利用右侧髋骨正位DR片判定贵州成人性别

目的建：抗利用成人右侧髋骨数字X线摄影DR片判定性别的厅法,并评价其应用价值。方法收集203例贵州地区成人右侧髋骨正位DR片,根据髋骨骨骼标本测量方法,结合DR片特点,选定9项测量指标（MI～M9）进行测量,运用SPSS统计软件分析测量数据,进行正态性检验、厅差齐性检验、T检验及秩合检验。结果剔除不符合条件的2项指标（M1、M7）,建立7项指标单项、7项指标联合使川以及3项指标（M2、M4、M9）逐步分析的判别方程,各方程判别函数回顾性与交叉性考核结果：单项指标59．6％～93．6％,7项联合和逐步分析均为95．1％。结论本文建立的利用成人右侧髋骨DR片判定性别的方法判别准确率最高达95．1％,町存实践中选用,并为相关研究提供数据参考。     

Sex differences in proximal humeral outline shape: elliptical Fourier functions

A method is presented for the numerical analysis of sex differences in size and shape of the proximal humeral outlines using elliptical Fourier functions (EFFs). A skeletal sample consisting of right and left humeri pairs of 69 individuals, 36 males and 33 females, was used. The proximal superior view in the plane of the proximo-distal axis of each humerus was photographed and then 54 boundary points were located on the two-dimensional outline tracings. These points were digitized and used to compute EFFs with 27 harmonics. From the EFFs, a set of expected points on the proximal humeral outline was generated using the centroid as an origin. Superimposition of the male and female outlines on this centroid provided a detailed picture of the relative sex differences in size and shape with respect to that center. The bounded area of the proximal humeral outline showed statistically significant sex differences. Additionally, statistical results of the amplitudes derived from the "area-standardized" EFFs and visual assessments of the mean outline plots indicated significant sex differences in shape of the proximal humeral outlines. Focusing on localized regional differences, the greater tubercle was located more postero-medially and the lesser tubercle was located more anteriorly in the males compared to the females. Sex determinations from the proximal humeri were also examined with discriminant functions based on the amplitudes, which represent shape characteristics of the outline, and the hounded area. Using a cross-validation method, predictions of the percentages of cases correctly classified with the discriminant functions were ranged from 92.8% to 95.7% for the right and left humeral data. These results suggest that differences in size and shape of the proximal humeral outlines may be better predictors of sex when compared with conventional measurements of the humerus.     

Sexual Dimorphism in the 7th Cervical and 12th Thoracic Vertebrae from a Mediterranean Population

Sex determination is an important task in physical anthropology and forensic medicine. The study sample comprised 121 individuals of known sex, age, and cause of death from San Jose cemetery in Granada (Spain). Eight dimensions were analyzed, and discriminant function analysis was performed for each vertebra to obtain discriminating functions and study the percentage of correct assignations of these functions. The percentage accuracy was approximately 80% for both vertebrae, but varied according to the sex, being higher for the 7th cervical in males and higher for the 12th thoracic in females. As reported in other populations, the greatest dimorphism values were found for the length of the inferior surface of the vertebral body and the width and length of the vertebral foramen of the 7th cervical vertebra and for the length of the inferior surface of the vertebral body of the 12th thoracic vertebra.     

Metacarpal sexual determination in a Spanish population

Anthropologists and forensic pathologist determine the sex of skeletons by analyzing quantitative and qualitative characters in the bone remains. Generally, the skull and os coxae are the elements most used, but they are not always preserved. In such cases, the investigator needs to have available other techniques based on different remains. The aim of the present work is to develop and describe discriminating functions for sex determination in a recent Spanish population using metacarpal morphology. A sample of bones corresponding to a contemporary Spanish population deposited at the Complutense University of Madrid (UCM) was analyzed. This sample comprised 697 metacarpals, corresponding to 79 adult individuals (37 men and 42 women). These allowed us to obtain 120 unifactorial discriminant functions. We selected the 10 equations, one for each metacarpal from both hands, that provided the best sexual discrimination. The correct sex classification rank progressed from 81%, for right (R) metacarpals IV and V, to 91%, for left (L) metacarpal II. The results suggest that metacarpals are structures that can be used for sex determination in paleoanthropological and forensic identifications.     

Discriminant analysis of the mandible for sex determination

Seventeen measuring parameters were used to characterize 197 mandibles (109 males, 88 females) taken from the corpses of people 20-80 years of age from the Rhine-Main-Neckar area. The representative measuring parameters and discriminating functions of intact lower jaws and lower jaw fragments of most frequent fracture types were determined in this practice group by means of discriminating analysis. In the present research material it was possible to determine sex accurately from an intact lower jaw bone in 82.6% (m) and 79.5% (f) of the cases. Furthermore, our results show clearly that sex may even be determined from lower jaw fragments. The classification was correct, depending on the type of fragment, in 72.5%-81.7% (m) and 71.6%-79.5% (f) of the cases.     

Sexual Dimorphism of the Humerus in Contemporary Cretans—A Population‐Specific Study and a Review of the Literature*

Abstract: Sex determination is the first essential step for positive identification when a decomposed body is recovered. Taking into consideration the population aspect of sexual dimorphism of the skeleton, the present study aimed to create a sex identification technique using osteometric standards, derived from a contemporary Cretan population. A total of 168 left humeri were measured according to standard osteometric techniques. The differences between the means in males and females were significant (p < 0.0005). About 92.3% of cases were correctly classified when all measurements were applied jointly. Stepwise procedure produced an accuracy rate of 92.9%. The most effective single dimension was vertical head diameter (89.9%). The current study provides standards for a population that has not been represented so far in the existing databases. It demonstrates that the humerus is an effective bone for the estimation of sex because even in a fragmentary state it can give high classification accuracy.     

Sex determination of Chinese femur by discriminant function

The objective of this study was to provide a method of sex determination for Chinese femur, especially for fragmentary remains. Statistical analysis of 17 measurements based on 141 northeastern Chinese femora shows that all measurements have significant sex differences. Sex determination by the midpoint method of a single measurement can obtain an average accuracy of 76.8%. The results indicate that of all dimensions the maximum head diameter is the best discriminator of sex. It alone can determine the sex of a femur with 85.1% accuracy. The results also show that maximum head diameter, transverse head diameter, epicondylar breadth, upper breadth, and medial condylar length have higher sexual dimorphisms than the dimensions of length. According to the result to stepwise discriminant analysis and the need for sexing fragmentary remains, 22 discriminant functions composed of various combinations of variables were calculated which can determine the sex of the femur correctly 82.3 to 87.2%. The methods of sex determination provided by this paper can be used to sex poorly preserved femora.     

Female Sex Offenders: A Controlled Comparison of Offender and Victim/Crime Characteristics

The current study was a chart review of 31 female sex offenders (FSO), 31 male sex offenders (MSO), 31 female violent offenders (FO), and 31 male violent offenders (MO) using a 2 (female or male) by 2 (sex or violent offender) design. This is the first known study to employ three control groups when researching female sex offenders. Multiple variables appeared related to gender and crime. However, some variables emerged as FSO specific. They reported the least alcohol abuse history and had fewer admissions of guilt to the crime than the two violent offender samples. More FSOs knew their victim and were biologically related to their victim than MSOs. Lastly, the FSO sample was the least discriminating as to their victim’s gender and had the highest overall rate of sexual victimization.