Table 3 The GLM analysis results of inpatient expenditures and length of stay

C-DRG reform (after vs. before^ref)

 − 0.035 (0.022)

 − 0.217 (0.026)^***

 − 7.335 (0.373)^***

 − 0.087 (0.022)^***

Age

0.003 (0.001)

 − 0.0004 (0.002)

 − 0.087 (0.024)^***

 − 0.003 (0.001)

Gender (female vs. male^ref)

0.003 (0.025)

 − 0.019 (0.028)

 − 0.279 (0.409)

0.001 (0.024)

Insurance types (URRBMI vs. UEBMI^ref)

 − 0.048 (0.029)

0.212 (0.033)^***

9.151 (0.482)^***

 − 0.142 (0.029)^***

Fracture location (femoral neck vs. trochanteric^ref)

0.216 (0.023)^***

0.242 (0.027)^***

1.053 (0.388)^**

0.070 (0.023)^**

Treatment (HR/IF vs. others^ref)

1.899 (0.029)^***

1.936 (0.033)^***

0.977 (0.485)^*

1.098 (0.029)^***

Charlson Comorbidity Index (≥ 3 vs. < 3^ref)

 − 0.014 (0.031)

 − 0.045 (0.035)

 − 0.736 (0.510)

0.014 (0.030)

Hospital level (tertiary vs. secondary^ref)

0.181 (0.027)^***

0.462(0.030)^***

10.909 (0.446)^***

0.035 (0.027)

Hospital type (TCM vs. general^ref)

 − 0.006 (0.027)

0.013 (0.031)

0.619 (0.456)

 − 0.012 (0.027)

Intercept

7.874 (0.127)^***

6.881 (0.145)^***

37.008 (2.121)^***

2.167 (0.126)^***

R-square

0.706

0.679

0.377

0.461