Learn the distinctions between simple and stratified random sampling. Understand how researchers use these methods to accurately represent data populations.

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

In a September 28, 2018 Change Request to Medicare’s Program Integrity Manual (“PIM”), the Centers for Medicare & Medicaid Services (“CMS”) updated its instructions to Medicare contractors regarding ...

Among individuals with a diagnosis of type 2 diabetes across the United States, income level, hemoglobin A1c, and comorbidity burden were the primary patient-level drivers of the use of newer ...