Research Methodology

Methylphenidate is related to sleep-related adverse events. This meta-analysis sought to quantify this impact of methylphenidate and determine the varieties of sleep problems associated with this drug.

Was the adverse event caused by the drug or by the condition itself? In this installment of his column, Dr Andrade points to the importance of controlling for confounding...

Both untreated depression and prenatal exposure to antidepressants have been associated with adverse outcomes. In this month's column, Dr Andrade describes possible study design' ’related contributors that are important...

Propensity score matching, or the probability that a subject will receive a particular treatment, is one way to address baseline differences between treatment groups in observational studies. In this...