When evaluating a patient with stable chest pain and no known coronary artery disease (CAD), how does the clinician decide whether to order imaging or other diagnostic tests? One approach involves a ...

Survey mode effects linked to unit nonresponse and screening procedures were estimated in a study of self-reported tobacco, alcohol, and illicit drug use. Two samples of the same population were drawn ...

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 ...