Objective Abortion is a sensitive issue surrounded with social, cultural and religious stigma. Therefore, estimation of its prevalence involves methodological challenges. The aim of this manuscript is to estimate the abortion prevalence, stratified by type, using direct and two indirect methods. MaterialsAndMethods : In a cross-sectional study in 2016, we recruited 1020 women aged 18-49 years. ...

In statistical mechanics, measuring the number of available states and their probabilities, thus system’s entropy, enables prediction macroscopic properties a physical system at equilibrium. This predictive capacity hinges on knowledge priori probabilities observing system, given by Boltzmann distribution. Unfortunately, successes equilibrium mechanics are hardto replicate out equilibrium, wher...

We consider the problem of sample size determination for count data. Such data arise naturally in the context of multicenter (or cluster) randomized clinical trials, where patients are nested within research centers. We consider cluster-specific and population-averaged estimators (maximum likelihood based on generalized mixed-effect regression and generalized estimating equations, respectively)...

The fixation index F(st) plays a central role in ecological and evolutionary genetic studies. The estimators of Wright ([Formula: see text]), Weir and Cockerham ([Formula: see text]), and Hudson et al. ([Formula: see text]) are widely used to measure genetic differences among different populations, but all have limitations. We propose a minimum variance estimator [Formula: see text] using [Form...

Several spatial econometric approaches are available to model spatially correlated disturbances in count models, but there are at present no structurally consistent count models incorporating spatial lag autocorrelation. A two-step, limited information maximum likelihood estimator is proposed to fill this gap. The estimator is developed assuming a Poisson distribution, but can be extended to ot...

Results A higher mean cell count was obtained using pooled lavage (means of 342 and 304 vs. 243 and 246, p=0000.4). The mean eosinophil percentage was comparable for both methods (for >100 cell count samples, 7% and 4% for single compared to 5% and 5% for pooled lavage, p=0.2). Single sample lavage produced a higher intraclass correlation (ICC) for eosinophil percentage (0.695 vs. 0.583). A cut...