Table 2 Effects of DIP pay reform on hospitalization costs in pediatric pneumonia patients: interrupted time series log-linear regression model results
Type of cost | β | S.E. | exp(β) | 95% CI | P value |
|---|---|---|---|---|---|
Total cost | |||||
Baseline trend (β1) | 0.004 | 0.004 | 1.004 | 0.996–1.012 | 0.293 |
Change in level (β2) | -0.125 | 0.094 | 0.883 | 0.734–1.061 | 0.184 |
Change in slope (β3) | -0.011 | 0.005 | 0.989 | 0.980–0.999 | 0.024 |
Post-reform trend (β1 + β3) | -0.007 | 0.003 | 0.993 | 0.988–0.999 | 0.012 |
Comprehensive medical service cost | |||||
Baseline trend (β1) | 0.003 | 0.005 | 1.003 | 0.993–1.012 | 0.604 |
Change in level (β2) | -0.264 | 0.111 | 0.768 | 0.618–0.955 | 0.017 |
Change in slope (β3) | -0.005 | 0.006 | 0.995 | 0.984–1.006 | 0.346 |
Post-reform trend (β1 + β3) | -0.003 | 0.003 | 0.997 | 0.991–1.003 | 0.347 |
Diagnostic cost | |||||
Baseline trend (β1) | 0.015 | 0.004 | 1.015 | 1.007–1.024 | < 0.001 |
Change in level (β2) | 0.165 | 0.094 | 1.180 | 0.981–1.418 | 0.078 |
Change in slope (β3) | -0.025 | 0.005 | 0.975 | 0.966–0.984 | < 0.001 |
Post-reform trend (β1 + β3) | -0.010 | 0.003 | 0.990 | 0.984–0.995 | < 0.001 |
Medication cost | |||||
Baseline trend (β1) | 0.001 | 0.003 | 1.001 | 0.994–1.008 | 0.788 |
Change in level (β2) | -0.172 | 0.080 | 0.842 | 0.720–0.985 | 0.031 |
Change in slope (β3) | -0.009 | 0.004 | 0.991 | 0.983–0.999 | 0.023 |
Post-reform trend (β1 + β3) | -0.008 | 0.002 | 0.992 | 0.987–0.996 | < 0.001 |
Material cost | |||||
Baseline trend (β1) | -0.016 | 0.012 | 0.984 | 0.961–1.008 | 0.186 |
Change in level (β2) | 0.237 | 0.279 | 1.267 | 0.734–2.187 | 0.395 |
Change in slope (β3) | -0.003 | 0.014 | 0.997 | 0.970–1.026 | 0.858 |
Post-reform trend (β1 + β3) | -0.018 | 0.008 | 0.982 | 0.967–0.997 | 0.018 |
Other cost | |||||
Baseline trend (β1) | 0.009 | 0.010 | 1.009 | 0.989–1.029 | 0.386 |
Change in level (β2) | -0.421 | 0.229 | 0.656 | 0.419–1.027 | 0.065 |
Change in slope (β3) | -0.025 | 0.012 | 0.976 | 0.953–0.998 | 0.034 |
Post-reform trend (β1 + β3) | -0.016 | 0.006 | 0.984 | 0.972–0.996 | 0.010 |