Background: Recently there has been a significant increase in the number of systematic
reviews addressing questions of prevalence. Key features of a systematic review include the …

Introduction Multimorbidity is a major concern in primary care. Nevertheless, evidence of
prevalence and patterns of multimorbidity, and their determinants, are scarce. The aim of this …

Much biomedical research is observational. The reporting of such research is often
inadequate, which hampers the assessment of its strengths and weaknesses and of a …

Los estudios observacionales (EO) corresponden a diseños de investigación cuyo objetivo
es" la observación y registro" de acontecimientos sin intervenir en el curso natural de estos …

In this tutorial, we provide a broad introduction to the topic of interaction between the effects
of exposures. We discuss interaction on both additive and multiplicative scales using risks …

Background: A region-specific (urban and rural parts of north, east, west, and south India)
systematic review and meta-analysis of the prevalence, awareness, and control of …

Abstract Background Supervised injection services (SISs) have been developed to promote
safer drug injection practices, enhance health-related behaviors among people who inject …

Objective To review systematically the medical literature reporting on the prevalence of a
niche at the site of a Cesarean section (CS) scar using various diagnostic methods, on …

The analysis of repeated measures or panel data allows control of some of the biases which
plague other observational studies, particularly unmeasured confounding. When this bias is …

Aims To estimate 3-year risk for diabetic foot ulcer (DFU), lower extremity amputation (LEA)
and death; determine predictive variables and assess derived models accuracy. Material …