The specific aims of this project include: Create the first large-scale complete-sexual-network study with detailed phylogenetic data in sub-Saharan Africa; Use the molecular-genotype data to establish chains of HIV infection; and investigate the impact of sexual network structures on the rate at which recombinant forms of the virus, dual infections as well as superinfections, emerge within a population.
To test two hypotheses using data from a nationally representative sample of 18,102 American adults (NAAL): 1) health literacy is positively associated with self-rated health for both men and women, net of various covariates; 2) the effect of health literacy on self-rated health increases by age for both men and women.
To examine how people's perceptions about local rates of infection, about their own or their spouse's HIV status, and their perceived risk of infection affects their behavior with regard to decisions to get tested for HIV, to engage in extramarital affairs, and to use barrier methods of contraception.
To examine the relationship between physical activity and risk of Alzheimer's and other dementia, between physical activity and change in cognitive function from baseline to follow up, between dose of physical activity and risk of dementia as well as change in cognitive function; and to explore the effectiveness of various types of physical activity on cognitive health
In the US, most employees offered defined contribution (DC) pension plans are provided a wide variety of investment options to chose from, when allocating their retirement saving portfolios. This study will investigate what happens when workers are offered a new type of investment option, namely, Life Cycle (LC) funds, which have been introduced in the last five years by pension plan sponsors.
To investigate the extent to which the impact of childhood disease and nutrition on adult outcomes can be captured by the more commonly-available data on height and lower leg length.