Table 3.
Propensity Score Matching Test Results
| Sample | Propensity Score | LR Chi-Square | p > Chi2 | Mean Bias | Median Bias |
|---|---|---|---|---|---|
| Unmatched | 0.216 | 2020.52 | 0.000 | 20.000 | 20.100 |
| Matched | 0.062 | 337.72 | 0.000 | 8.200 | 4.400 |
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.