A Geometric Morphometric Approach to Sex Determination of the Human Adult Os Coxa

Abstract: Sex determination of the human skeleton is best assessed from the os coxa. The present study explored the possibility of using three‐dimensional landmark coordinate data collected from various landmarks located over the entire bone to determine whether there were significant sex differences local to the landmarks. Thirty‐six landmarks were digitized on 200 African American and European American male and female adult human os coxae. MANCOVA results show that sex and size have a significant effect on shape for both European Americans (Sex, F = 17.50, d.f. = 36, 63, p > F = 0.0001; Size, F = 2.56, d.f. = 36, 63, p > F = 0.0022) and African Americans (Sex, F = 21.18, d.f. = 36, 63, p > F = 0.0001; Size, F = 2.59, d.f. = 36, 63, p > F = 0.0005). The discriminant analysis shows that sexing accuracy for European Americans is 98% for both males and females, 98% for African American females, and 100% for African American males.     

The Intergenerational Impact of Intimate Partner Violence against Mothers on Child Functioning over four Years

Intimate partner violence affects one in three U.S. women. Children often witness the violence. Methods: A 4-year cohort analysis of 300 mother-child dyads used latent growth curve techniques to examine the impact of partner violence on mothers’ and children’s mental health and function over time. The dyads entered the study when the mother sought safe shelter or justice services. Data was collected every four months, 13 times. Results: Four models were derived, each with good fit. Maternal age, Adverse Childhood Events, and ethnicity determined the level of maternal PTSD, depression, and anxiety at baseline. Mothers’ self-efficacy and marginalization determined if maternal mental health symptoms decreased or increased over 4-years. Maternal symptom levels determined if child dysfunctions persisted over time. Conclusion: This analysis provides longitudinal evidence that maternal mental health determines children’s recovery from or persistence of behavioral dysfunctions. Primary prevention and informed referral has the potential to improve child outcomes.     

Youth violence at school and the intersection of gender, race, and ethnicity

Purpose

Research has revealed that school-based activities are related to youth violence at school; however, the intersection of gender, race, and ethnicity in this relationship remains uncertain.

Methods

This study utilizes data from the Education Longitudinal Study of 2002 and incorporates multilevel modeling techniques to examine the intersectionality of gender, race, and ethnicity in the relationship between school-based activities and youth victimization at school.

Results

Racial and ethnic minority male involvement in school sports is linked to an increase in school-based victimization, while White American male involvement in school sports is associated with a decrease in school-based victimization. On the other hand, school sports appears to be an insulating factor against victimization for girls regardless of their race or ethnicity.

Conclusions

This research underscores the importance of understanding the intersection of gender, race, and ethnicity when examining youth violence.     

Unanticipated capital flows and the Mexican economy: An empirical investigation

This research explores the differential impact of unanticipated and anticipated foreign capital flows on Mexico's economy for the period 1965–85. If unanticipated flows cause appreciation of the real exchange rate and do not affect domestic expenditure, one can assume that the country's foreign exchange constraint is not binding. Based on empirical evidence, this hypothesis can be rejected. The implication is that Mexico's problems probably do not stem from overborrowing. Anticipated capital flows do affect private spending, but a negative coefficient suggests that the private sector has borne the brunt of post‐crisis adjustment. The results show that the Mexican government has dominated the expenditure of foreign loans throughout the period.     

Exchange controls and national capitalism: The Philippines experience

(There is an) unnecessary degree of unreality and Western bias involved in most economic theorizing about the rural tropical world, as well as economists' gullibility in their use of official statistics…¹     

La diffusion d'une innovation portant les germes de son plafonnement: la réutilisation des hémodialyseurs au Québec

Sommaire: L'objectif de cette recherche est d'identifier les facteurs de diffusion d'une innovation ‐ la réutilisation des hémodialyseurs (rh) ‐ ainsi que de son plafonncment marqué par la controverse, à travers les motivations et stratégies des groupes d'acteurs clés. Plus particulièrement, cette étude vise à situer le rôle de la “ médecine fondée sur des données probantes ”dans la dynamique de la diffusion de cette innovation. Nous partons du constat que la rh est une pratique reconnue pour les économies qu'elle génère tout en étant perçue par certains comme risquée pour la santé des usagers et du personnel. Les résultats de notre étude montrent que la diffusion de la rh au Québec, loin d'avoir pris son assise sur des données empiriques solides, a plutôt résulté de comportements sociaux d'imitation à la faveur de contacts directs entre des centres de dialyse voisins qui subissaient alors de fortes pressions de leurs autorités afin de réduire leurs dépenses. Cependant, l'ampleur des investissements nécessaires à l'introduction de cette pratique, la perspective de devoir négocicr I'achat de matériel dédiéà la rh auprès d'un monopole, ainsi que les stratégies commerciales de fournisseurs peu motivés à promouvoir la vente de matériel de rh au détriment de celle, plus lucrative, d'hémodialyseurs en grande quantité (lorsque non réutilisés), ont grandement réduit l'attrait économique dc la rh aux yeux des dirigeants de centres de dialyse. L'incapacité des données empiriques à endiguer les craintes soulevées par les risques associés à la rh a eu la double conséquence (1) dc mener au plafonnement de cette activité et (2) d'induire des centres de dialysc qui effectuaient déjà la rh à se doter d'une gestion envers les patients basée sur la non transparence et la contrainte. Sur le plan conceptuel, les résultats de cette étude montrent que ce n'est que dans la mesure où les facteurs sociaux et d'intérêts (dynamiquc institutionnelle) sont pris en compte et qu'ils convergent avec les critères de rationalité technique, qu'une innovation améliore ses chances de se diffuser et de s'enraciner dans une organisation. Considérant ces conclusions, quelques propositions sont énonées dans le but d'améliorer le potentiel d'implantation de la rh en facilitant la prise en compte des données empiriques dans les centres de dialyse, tout en leur procurant un meilleur rapport de force vis‐à‐vis leurs fournisseurs et afin que les patients et le personnel clinique y trouvent davantage leur intérêt. Abstract: The purpose of this research is to identify the factors in the diffusion of an innovation ‐ hemodialyzer re‐use ‐ and the controversy surrounding the levelling off of its use, by looking at the motivations and strategies of key actors. More particularly, this study focuses on the role of “evidence‐based medicine” in the diffusion of this innovation. Starting with the observation that hemodialyzer re‐use is recognized for its cost‐savings while being perceived by some to be a health risk for both users and staff, our findings show that diffusion of this practice in Quebec, far from being based on solid empirical data, was instead influenced by the social phenomenon of imitation that resulted from direct contact with local dialysis centres that were at the time under great pressure from their management to reduce expenditures. The cost‐savings of hemodialyzer re‐use for the people managing the dialysis centres was, however, greatly reduced by several factors: the considerable investments needed to introduce this practice; the prospects of having to negotiate with a monopoly to purchase the hemodialyzer‐dedicated equipment; and the commercial strategies of suppliers who have little interest in promoting the sale of equipment for hemodialyzer re‐use over the more lucrative sale of large quantities of hemodialyzers (when not re‐used). The ineffectiveness of empirical data in allaying fears of the risks associated with the practice of hemodialyzer re‐use has had the dual effect of 1) causing this activity to level off, and 2) causing dialysis centres already involved in hemodialyzer re‐use to adopt an approach to patient management that is based on non‐transparency and constraint. On the conceptual level, our findings show that the likelihood of an organization adopting an innovation increases when social factors and interest factors (such as the institutional dynamic) are taken into account and align with criteria of technical rationality. Given these conclusions, we put forward some proposals for improving the potential of hemodialyzer re‐use by facilitating the dialysis centres' consideration of empirical data. As well, our proposals are aimed at obtaining a stronger position for the centres with regard to their suppliers and at ensuring that both patients and clinic staff benefit more from the practice of hemodialyzer re‐use.