Impact of Social Determinants of Health on Pre-exposure Prophylaxis Care for HIV Prevention.

Background: HIV continues to disproportionately impact men who have sex with men (MSM) in the United States (US). Pre-exposure prophylaxis (PrEP) is effective, but disparities persist. Limited studies have conducted systematic evaluations of social determinants of health (SDOH) and their effects on PrEP persistence among MSM.

Factors associated with suboptimal retention in HIV pre-exposure prophylaxis care among men who have sex with men.

Despite the efficacy of HIV pre-exposure prophylaxis (PrEP), retention in care in the United States remains suboptimal. The goal of this study was to explore factors that lead to suboptimal retention in PrEP care for men who have sex with men (MSM) in real-world clinical settings in the United States. Trained interviewers conducted semi-structured interviews with MSM (N = 49) from three clinics who had been engaged in PrEP care in the Midwest (n = 15), South (n = 15), and Northeast (n = 19) geographic regions and had experienced a lapse in PrEP use.

A novel feature selection methodology for automated inspection systems.

This paper proposes a new feature selection methodology. The methodology is based on the stepwise variable selection procedure, but, instead of using the traditional discriminant metrics such as Wilks' Lambda, it uses an estimation of the misclassification error as the figure of merit to evaluate the introduction of new features. The expected misclassification error rate (MER) is obtained by using the densities of a constructed function of random variables, which is the stochastic representation of the conditional distribution of the quadratic discriminant function estimate.

The association of Helicobacter pylori infection and nonsteroidal anti-inflammatory drugs in peptic ulcer disease.

Background And Aim: Peptic ulcer disease (PUD) affects 10% of the world population. Helicobacter pylori infection and the use of a nonsteroidal anti-inflammatory drug (NSAID) are the principal factors associated with PUD. The aim of the present study was to evaluate a cohort of patients with PUD and determine the association between H pylori infection and NSAID use.

[Incidence of peptic ulcer at the Instituto Nacional de la Nutrición "Salvador Zubirán": study of localization, associated factors and temporal trends].

Objective: To know the frequency, trends and associated factors of peptic ulcer disease in our Institute.

Background: Peptic ulcer is an important disease; about 5-10% of the population can expect to develop this disease during lifetime.

Material And Methods: We reviewed 1,123 patients with peptic ulcer in five years.