Resources for observational comparative research have expanded enormously in recent years to include very large sources of ...

Causal inference in observational settings seeks to estimate the effect of exposures, treatments or interventions on outcomes in the absence of random assignment. Unlike experimental designs, ...

Using observational methods, Arbel et al. (Dec. 23, 2021, issue) 1 calculated an adjusted 90% lower mortality due to Covid-19 among participants who received a first BNT162b2 vaccine (Pfizer–BioNTech) ...

Background Yaws is a chronic infectious disease that disproportionately affects under-reached communities. In 2023, Papua New ...