RESUMO
This study examined the relationships between hair cortisol concentrations (HCC) and sex, age, nutritional status (as determined by body condition scores, or BCS), and body mass (geometric mean calculated from morphometric measurements), as well as the potential influence of hair pigmentation (light, dark, or agouti/mixed) on HCC in dogs of the Bosawas Biosphere Reserve, Nicaragua. The dogs examined in this study live in a marginal environment where disease, malnutrition, and mortality rates are high. For fur color, HCC was significantly higher in light fur than in than dark and mixed fur (p < 0.001). In addition, BCS scores were found to have a negative effect on HCC (p < 0.001). Measures of sex and body size exhibited inconclusive effects on HCC, and when compared to adult dogs, juvenile dogs did not exhibit significantly different HCC. Repeated measures of dogs over time reveal a moderate intra-class correlation, suggesting that there are unmeasured sources of individual-level heterogeneity. These findings imply a need to account for fur color in studies of HCC in dogs, and the study suggests an overlooked relationship between cortisol and body condition scores in undernourished dogs in diverse settings.
RESUMO
This study investigated whether and how different patterns of group exposure within residential contexts (i.e., living in a Mexican immigrant enclave, a Mexican ethnic enclave, a pan-Hispanic enclave, or a non-Hispanic white neighborhood) are associated with smoking during pregnancy among Mexican-origin mothers. Using a hierarchical linear modeling approach, we found that Mexican-origin mothers' residential contexts are important for understanding their smoking during pregnancy. Residence in an ethnic enclave is associated with decreased odds of smoking during pregnancy, while residence in a non-Hispanic white neighborhood is associated with increased odds of smoking during pregnancy, above and beyond the mothers' individual characteristics. The magnitude of the associations between residence in an ethnic enclave and smoking during pregnancy is similar across the different types of ethnic enclaves examined. The important roles of inter- and intra-group exposures suggests that in order to help Mexican-origin women, policy makers should more carefully design place-based programs and interventions that target geographic areas and the specific types of residential contexts in which women are at greater risk.
Assuntos
Emigrantes e Imigrantes/psicologia , Americanos Mexicanos/psicologia , Mães/psicologia , Características de Residência , Fumar/etnologia , Aculturação , Adulto , Feminino , Hispânico ou Latino , Humanos , Modelos Logísticos , México/etnologia , Análise Multinível , Risco , Fatores Socioeconômicos , População BrancaRESUMO
OBJECTIVES: This research analyzes variation in children's height-for-age z-scores from a nationally representative sample of children from Honduras in 2006. This work draws on theoretical perspectives from parental investment theory to describe the mediating effects that parental investment may have on children's health and nutrition, even in low socioeconomic status households. METHODS: This research uses the 2006 Demographic and Health Survey for the country of Honduras. The dependent variable is the child's height-for-age z-score (HFAZ). Variation in the HFAZ is analyzed using multiple regression and multilevel regression models to incorporate individual, family and higher-level predictors. RESULTS: The findings suggest that children who are more invested in by their parents had better outcomes (HFAZ) than children whose parents did not invest as much. Of the three measures of parental investment used in this study, child wantedness and adequate prenatal care represented significant effects on children's HFAZ, and breastfeeding duration exhibited an interactive effect with household socioeconomic status. CONCLUSIONS: Results suggest that families that can invest more in their children through breastfeeding and sufficient prenatal care can mediate the negative effects of poor socioeconomic status on their children's health. This suggests that these measures of investment used here may be effective at mediating the negative effects of low socioeconomic status for this particular child health outcome.
Assuntos
Estatura , Estado Nutricional , Poder Familiar , Alocação de Recursos , Classe Social , Adolescente , Adulto , Aleitamento Materno/estatística & dados numéricos , Criança , Pré-Escolar , Criança não Desejada , Feminino , Honduras , Humanos , Masculino , Pessoa de Meia-Idade , Relações Pais-Filho , Gravidez , Cuidado Pré-Natal/estatística & dados numéricos , Adulto JovemRESUMO
The Waorani may have the highest rate of homicide of any society known to anthropology. We interviewed 121 Waorani elders of both sexes to obtain genealogical information and recollections of raids in which they and their relatives participated. We also obtained complete raiding histories of 95 warriors. An analysis of the raiding histories, marital trajectories, and reproductive histories of these men reveals that more aggressive warriors have lower indices of reproductive success than their milder brethren. This result contrasts the findings of Chagnon [Chagnon N (1988) Science 239:985-992] for the Yanomamo. We suggest that the spacing of revenge raids may be involved in the explanation of why the consequences of aggressiveness differ between these 2 warlike lowland South American peoples.