Table 3.
Fixed effects with regression analysis.
| Variables | Model 1 | Model 2 | Model 3 | Model 4 | |||||
|
|
OMa–LOSb–levels of EHRc adoption (Prob>F=0.0828) | OM–RRd–levels of EHR adoption (Prob>F=0.0116) | TMe–LOS–levels of EHR adoption (Prob>F=0.4532) | TM–RR–levels of EHR adoption (Prob>F=0.3388) | |||||
| Levels of EHR adoption | –0.020 | 5.335f | –4.961 | 415.2 | |||||
| Dependent variables | |||||||||
|
|
Average LOS | 0.000 | N/Ag | –0.002 | N/A | ||||
|
|
RR | N/A | 4.375h | N/A | 431.6 | ||||
|
|
Levels of EHR adoption and average LOS | -0.000 | N/A | 0.001 | N/A | ||||
|
|
Levels of EHR adoption and RR | N/A | –5.384f | N/A | –422.3 | ||||
| Control variables | |||||||||
|
|
Market competition (HHIi) | 0.082 | 0.078 | 3.148 | 2.959 | ||||
|
|
Medicare percentage | –0.009 | –0.013 | 0.699 | 0.937 | ||||
|
|
Medicaid percentage | –0.026 | –0.026 | 1.211 | 1.343 | ||||
| Years | |||||||||
|
|
2014 | Reference | Reference | Reference | Reference | ||||
|
|
2015 | –0.005 | –0.007f | –1.001 | –0.848 | ||||
|
|
2016 | –0.008 | –0.009f | 0.388 | 0.569 | ||||
|
|
2017 | –0.008 | –0.011j | 0.243 | 0.460 | ||||
aOM: operating margin.
bLOS: length of stay.
cEHR: electronic health record.
dRR: readmission rate.
eTM: total margin.
fP<.05.
gN/A: not applicable.
hP<.10.
iHHI: Herfindahl-Hirschman Index.
jP<.001.