Table 3 Results of interrupted time series showing changes in trend and level change according to quartiles of hospital discharge costs per case after the information disclosure
Thyroid malignant tumors | Colorectal malignant tumors | |||||||
|---|---|---|---|---|---|---|---|---|
Q1 | Q2 | Q3 | Q4 | Q1 | Q2 | Q3 | Q4 | |
Constant β0 (SE) | 11764.385*** | 13880.309*** | 16176.986*** | 17172.461*** | 37242.227*** | 39809.620*** | 55186.052*** | 53864.407*** |
(450.637) | (135.857) | (378.180) | (88.921) | (1005.794) | (1756.612) | (1033.777) | (1342.396) | |
Quarterly trend before information disclosure β1 (SE) | -15.508 | 117.078** | -1.335 | 189.307*** | 635.738** | 1198.890** | 883.358*** | 1704.025*** |
(97.772) | (36.776) | (76.513) | (22.839) | (219.964) | (365.307) | (237.346) | (312.207) | |
Step change when information disclosed β2 (SE) | 1629.251* | -735.532* | 124.565 | -1504.189** | -1173.341 | -4037.882* | -1056.318 | -6511.650* |
(656.360) | (283.823) | (518.349) | (463.237) | (1424.749) | (1826.916) | (1363.632) | (2748.788) | |
Change in trend after information disclosure β3 (SE) | 250.365* | 56.176 | 151.906 | -44.700 | 48.350 | -807.3128* | -892.494** | -1076.060** |
(100.377) | (37.522) | (79.571) | (30.908) | (228.392) | (382.820) | (254.425) | (361.946) | |