Regression discontinuity designs use observational data to examine treatment efficacy. This article uses the example of statin prescription in primary care to explain the concept of the method and how ...

Objectives Patients may benefit from continuity of care by a personal physician general practitioner (GP), but there are few studies on consequences of a break in continuity of GP. Investigate how a ...

1 Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA; and Harvard Center for Population and Development Studies, Cambridge, MA, USA 2 Department of Global Health, ...

Immunology — though deeply experimental in everyday practice — is also a theoretical discipline. Recent advances in the understanding of innate immunity, how it is triggered and how it shares features ...

Regression discontinuity design (RDD) is a quasi-experimental research method used to identify causal effects by exploiting a cutoff or threshold in the assignment of treatment. Regression ...

Regression discontinuity designs are non-randomized study designs that permit strong causal inference with relatively weak assumptions. Interest in these designs is growing but there is limited ...

This is a preview. Log in through your library . Abstract Three forms of discontinuity in social structure produce linked analogous problems about aggregates or wholes: discontinuity in units, ...