Table 3 Correlation matrix

Outpatient fee per visit

1

Inpatient fee per capita

0.703*

1

Total cost of medical equipment worth over 1 million

0.442*

0.461*

1

Total amount of medical equipment worth over 1 million yuan

0.467*

0.397*

0.855*

1

Number of physicians

0.213*

0.365*

0.841*

0.702*

1

Number of nurses

0.258*

0.390*

0.859*

0.721*

0.982*

1

Number of beds

0.349*

0.408*

0.860*

0.747*

0.933*

0.949*

1

Government’s financial investment

0.227*

0.156*

0.351*

0.331*

0.250*

0.262*

0.378*

1

Hospital revenue

0.254*

0.224*

0.531*

0.486*

0.450*

0.462*

0.567*

0.937*

1

GDP per capita in the district

0.725*

0.521*

0.464*

0.458*

0.285*

0.339*

0.382*

0.223*

0.290*

1

Aging rate (over age 60) rate in the district

− 0.108

− 0.075

− 0.027

− 0.033

− 0.078

− 0.120*

− 0.149*

0.026

− 0.018

− 0.135*

1