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Table 4 State level linear regression with dependent variable “Percentage of Hospitals in State that Share Clinical Care Summaries”

From: Vendor of choice and the effectiveness of policies to promote health information exchange

  Dependent variable:
Percentage that Share Clinical Summary
(1) (2) (3) (4)
Vendor HHI 0.349** 0.657*** 0.636*** 0.639***
  (0.168) (0.188) (0.193) (0.202)
System HHI   − 0.714** − 0.900** − 0.948***
   (0.242) (0.292) (0.366)
No. of Hospitals    −0.209 −0.347*
    (0.145) (0.172)
QE Statewide    −0.045  
    (0.048)  
DE Statewide    −0.016  
    (0.065)  
Elevator     0.073
     (0.073)
Public Utility     0.042
     (0.083)
Capacity Builder     0.116
     (0.091)
Orchestrator     0.081
     (0.065)
Constant 0.280*** 0.289*** 0.410*** 0.308***
  (0.061) (0.058) (0.099) (0.099)
Observations 49 49 49 49
R2 0.08 0.23 0.27 0.30
Adjusted R2 0.06 0.20 0.19 0.19
Residual Std. Error 0.17 (df = 47) 0.15 (df = 46) 0.16 (df = 43) 0.16 (df = 41)
F Statistic 4.3** (df = 1; 47) 6.9*** (df = 2; 46) 3.3** (df = 5; 43) 2.6** (df = 7; 41)
  1. Note:*p < 0.1; **p < 0.05; ***p < 0.01