In order to better understand the statistical relationship between measures of birthweight and gestational age and their effects on infant mortality, national vital statistics data was examined using non-parametric regression techniques (GAM) that allow for a sophisticated and detailed analysis of infant mortality models. These models allow for various non-linear effects of birthweight and gestational age on infant mortality to be quantified based upon extant methodologies (Solis, Pullum and Frisbie, 2000). Utilizing over-time, race/ethnicand sex-specific approaches, the identification of "zones" of optimal birth outcomes based upon infant mortality probabilities is successfully accomplished. This process results from the creation of a rigorous cross-classification of GAMsupplied birthweight and gestational age parameters. From these results, I find that Non-Hispanic Black infants still exhibit an infant mortality disadvantage relative to Non-Hispanic Whites and Mexican American infants. For the four birth outcome parameters and their interactions, I find evidence of infant mortality disadvantage for infants that are early or late as well as small or heavy relative to their race/ethnic-specific, birthweight-adjusted optima.

Indiana University-Purdue University Indianapolis (IUPUI) / African American adolescents have inadequate self-management behaviors, particularly during middle adolescence (14-16 years of age). Inaccurate beliefs, degree of asthma impairment (well controlled or not well controlled), and gender could influence asthma self-management (symptom management, medication management, and environmental control). The researcher used the illness representations concept from the common sense self-regulation model as the framework for this study. The descriptive correlational study explored (1) differences in illness representations (cognitive and emotional) and self-management behaviors by gender, asthma impairment, and gender by asthma impairment of African American adolescents with asthma; and (2) relationships between illness representations and asthma self-management behaviors, gender, and asthma impairment in 133 African American adolescents with asthma. Data were collected using the Asthma Control Test, the Illness Perceptions Questionnaire-Revised, and the Asthma Self-Care Practice Instrument. Data were analyzed using ANOVA, MANOVA, Pearson correlations, and multiple regressions. Findings indicated that females whose asthma was not well controlled had more beliefs about the chronicity of their asthma than those who were well controlled. However, there were no differences in such beliefs among males whose asthma was not well controlled from those who were well controlled. Well controlled adolescents differed from not well controlled adolescents for cognitive representations of cyclic timeline, treatment control, psychological attributes, and consequences as well as for emotional representations. There were no significant differences in the means of the self-management behaviors by gender, by asthma impairment, or by gender by asthma impairment. A significant bivariate relationship was found between representations of identity, consequences, treatment control, and symptom management. In the multiple regression model, representations of treatment control and consequences contributed to variances in symptom management; however, no other representations, gender, or asthma impairment variables were statistically significant. The representations, gender, and asthma impairment variables did not contribute to variances in medication management or environmental control. Limited studies have been conducted with African American adolescents with asthma; therefore, the findings will contribute information to the literature on their illness representations and self-management behaviors. The findings also contribute to the literature information based on adolescents' genders and levels of asthma impairment.