Objective: To understand patient portal engagement stratified by patient characteristics among adults 50 years and older with at least 1 common chronic medical condition using electronic health ...

The pharmaceutical industry is facing growing pressure to make drug development more patient-focused. Traditionally, most observational research has been derived from clinical and payer data, but has ...

Kathryn Snow does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. A test-negative observational study design may be best ...

Where can observational studies be registered? An increasing number of clinical trial registries exist and, despite their names, some include observational studies ...

The Journal of the American Statistical Association (JASA) has long been considered the premier journal of statistical science. Science Citation Index reported JASA was the most highly cited journal ...