Multivariate longitudinal ordinal data are often involved in studies with each individual having more than one measure. However, due to complicated correlation structures within and no explicit likelihood functions, analyzing multivariate is quite challenging. In this paper, Markov chain Monte Carlo (MCMC) sampling methods developed analyze by extending probit (MVP) models for univariate multip...

PURPOSE Previous studies show anti-epileptic drug compliance and seizure control in people with epilepsy (PWE) to be lower among low-income groups and African-Americans. We examined how socio-demographic factors influence seizure control in an inner-city population. METHODS The clinic records of 193 PWE were analyzed. Good seizure control was defined as no seizures in the previous year. Bivar...

BACKGROUND Asthma guidelines recommend severity assessment to assign treatment, often quantified as current control. It is unknown how strongly control assessment affects clinician treatment decisions, nor if control is sufficient. METHODS To determine patient factors used by physicians to assign treatment, we surveyed pulmonary specialists (PSs) and family physicians (FPs) using vignettes. W...

Latino college students (M age=21.4 years) completed self-report surveys assessing adolescent dating experiences. Compared to young men (n=69), young women (n=97) had more limitations placed on them by parents as adolescents and began dating later. No gender difference in timing of the first serious relationship emerged. More young women had their first relationship with a Latino, and having a ...

This paper examines how the use of various taxonomic levels and morphological functional groups influences the interpretation of multivariate analyses when comparing macroalgal assemblages in different regions in the Northeast Pacific. We found that for intertidal assemblages, within-site variation was high at the species level and regions only became discernable from the genus level to the ord...

BACKGROUND To explain the historically low rates of participation in cancer clinical trials, several factors have been studied. These include subject characteristics and attitudes, clinical trial availability and eligibility criteria, and physician attitudes and communication skills. However, the impact of nonphysician research personnel, who often consent patients for studies, is unclear. We t...

BACKGROUND The persistence of knee pain (KP) and its relationship with occupational factors were investigated in two prospective cohorts of French workers: retirees of the Gazel cohort and workers in the Cosali cohort. METHODS KP was defined according to the Nordic questionnaire (>1 day in the last year), and the information was extracted from two questionnaires in 2006 and 2012 for the Gazel...