DiD coefficient (δ) | lndis | lnALoS | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Model 1 | Model 2 | Model 1 | Model 2 | |||||||||
Estimate δ | (CI) | Estimate δ | (CI) | Estimate δ | (CI) | Estimate δ | (CI) | |||||
Wave1*period1 | 0.068 | (− 0.011 | 0.147) | 0.068 | (− 0.011 | 0.147) | 0.017 | (− 0.014 | 0.048) | 0.017 | (− 0.014 | 0.048) |
Wave1*period2 | 0.026 | (− 0.141 | 0.193) | 0.026 | (− 0.141 | 0.193) | −0.001 | (− 0.087 | 0.084) | − 0.001 | (− 0.087 | 0.084) |
Wave2*period2 | −0.097 | (− 0.291 | 0.097) | − 0.055 | (− 0.141 | 0.030) | ||||||
General surgery*period2 | −0.030 | (−0.194 | 0.134) | −0.043 | (− 0.126 | 0.039) | ||||||
urology*period2 | 0.030 | (−0.103 | 0.164) | −0.063 | (−0.139 | 0.012) | ||||||
Ophthalmology*period2 | −0.151 | (−0.307 | 0.005) | −0.025 | (− 0.105 | 0.054) | ||||||
head neck*period2 | −0.239* | (−0.409 | − 0.070) | −0.086* | (− 0.168 | −0.004) | ||||||
R Square | 0.48 | 0.59 | 0.47 | 0.51 | ||||||||
Number of cases | 1828 | 1828 | 1828 | 1828 | ||||||||
number of hospitals | 29 | 29 | 29 | 29 |