Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Situations in Which One Might Prefer Weighting or Matching
| Weighting | Matching |
|---|---|
| The form of the exposure model is (approximately) known | The form of the exposure model is not known. |
| No units have extreme covariate values or propensity scores | Exact matching is possible on several important covariates. |
| There are few covariates to adjust for. | |
| Outcome analysis is complex and challenging to incorporate variable weights. | |
| Simplicity of explanation to a broad audience is desired. |
