Background: Various monetary incentive strategies have been used to increase participant adherence in research. Our study examined the impact of two lottery incentive amounts on study adherence.Aims/objectives: The objective of this paper was to quantify the impact of a $50 and $100 lottery...

Background: Various monetary incentive strategies have been used to increase participant adherence in research. Our study examined the impact of two lottery incentive amounts on study adherence.Aims/objectives: The objective of this paper was to quantify the impact of a $50 and $100 lottery...

The hazard ratio is a standard summary for comparing survival curves yet hazard ratios are often difficult for scientists and clinicians to interpret. Insight into the interpretation of hazard ratios is obtained by relating hazard ratios to the maximum difference and an average difference...

type="main" xml:id="rssc12047-abs-0001" <title type="main">Abstract</title> <p>Stable isotope sourcing is used to estimate proportional contributions of sources to a mixture, such as in the analysis of animal diets and plant nutrient use. Statistical methods for inference on the diet proportions by using stable isotopes have...</p>

We develop two conditional tests for homogeneity of zero-inflated Poisson (ZIP) and Poisson-hurdle distributions. A Monte Carlo method is proposed for approximating the reference distributions of these tests. The techniques are applied to two examples.