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

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)