Table 2.
Results of Estimated Difference in Annual Health Care Spending among Adults Who Have a Specialist as Their Usual Source of Care Compared to a Primary Care Physician (Medical Expenditure Panel Survey 2008)
| Inference | Propensity Score Method | Estimated Difference | p-Value |
|---|---|---|---|
| PATE | |||
| 1 : 1 matching | NA | ||
| 5 : 1 matching | NA | ||
| Subclassification | $2,765.64 | <.001 | |
| Weighting | $2,477.02 | <.001 | |
| PATT | |||
| 1 : 1 matching | $2,544.76 | .086 | |
| 5 : 1 matching | $3,614.43 | <.001 | |
| Subclassification | $3,414.36 | <.001 | |
| Weighting | $1,759.60 | .003 | |
| SATE | |||
| 1 : 1 matching | NA | ||
| 5 : 1 matching | NA | ||
| Subclassification | $2,573.13 | <.001 | |
| Weighting | $2,948.03 | .000 | |
| SATT | |||
| 1 : 1 matching | $1,118.09 | .448 | |
| 5 : 1 matching | $3,193.53 | <.001 | |
| Subclassification | $2,723.21 | <.001 | |
| Weighting | $2,015.33 | .002 |