Table 6.
Dependent Variables | ||||
---|---|---|---|---|
Independent Variable: Affiliation Type | Log 90-Day Inpatient Payments | Log 90-Day Outpatient and Physician Payments | Log 90-Day Total Payments | |
Model 1 | Any | .42 | 1.78 | 1.11 |
(.30) | (1.86) | (1.17) | ||
Model 2 | Low | .30 | 3.36 | 2.05 |
(.31) | (1.82) | (1.17) | ||
High | −.25 | −1.80 | −1.23 | |
(.28) | (1.69) | (1.03) | ||
Model 3 | IPA | .21 | −2.37 | −.80 |
(.36) | (1.96) | (1.22) | ||
PHO | .43 | 4.49* | 3.57* | |
(.34) | (1.89) | (1.28) | ||
MSO | −.33 | −.13 | −.51 | |
(.31) | (1.89) | (1.18) | ||
ISM | −.15 | −.99 | −1.11 | |
(.37) | (2.01) | (1.26) | ||
Foundation | −.07 | −3.48 | −1.23 | |
(.38) | (2.06) | (1.33) | ||
Equity | −.72 | .52 | 1.69 | |
(.66) | (3.46) | (2.26) | ||
GPWW | −.42 | −.38 | .35 | |
(.46) | (2.82) | (1.60) | ||
N Model 1 | 1,035,482 | 51,786 | 51,441 | |
N Model 2 | 1,032,507 | 51,653 | 51,310 | |
N Model 3 | 1,003,532 | 50,189 | 49,858 |
Notes: Regressions include hospital fixed effects and regressors listed in Appendix. Coefficients and robust standard errors (in parentheses) reported in percentage points. Stata cluster function used to correct for lack of independence across observations for patients admitted to the same hospital. AMI = acute myocardial infarction; IPA = independent practice association; PHO = physician–hospital organization; MSO = management services organization; ISM = integrated salary model; GPWW = group practice without walls.
Significant at p<.05 level.