Table 2 Effects of the LTCI program on the LoS (Difference-in-difference estimation)
Model 1 | Model 2 | Model 3 | Model 4 | |
|---|---|---|---|---|
LTCI users | Level 1 | Level 2 | Level 3 | |
Intercept | 0.960*** (0.011) | 0.989*** (0.010) | 0.981*** (0.010) | 0.965*** (0.010) |
Treatment (ref: Control) | 1.271*** (0.059) | −8.349*** (0.130) | −2.843*** (0.114) | 0.108 (0.067) |
2009-2008 (ref: 2008–2007) | −0.028* (0.016) | −0.018 (0.015) | 0.002 (0.015) | 0.062*** (0.015) |
2010-2009 (ref: 2009–2008) | −0.203*** (0.027) | −0.178*** (0.025) | −0.138*** (0.025) | −0.034 (0.026) |
Employee (ref: Self-employed) | 0.045* (0.024) | 0.023 (0.023) | 0.034 (0.023) | 0.026 (0.023) |
NHI premium (ten thousand KRW) | 0.013*** (0.001) | 0.012*** (0.001) | 0.013*** (0.001) | 0.013*** (0.001) |
Large city (ref: Non-large city) | 0.104*** (0.031) | 0.108*** (0.029) | 0.102*** (0.029) | 0.104*** (0.029) |
Number of physician visits | −0.038*** (0.000) | −0.032*** (0.000) | −0.033*** (0.000) | −0.034*** (0.000) |
Number of chronic diseases | 2.268*** (0.006) | 2.086*** (0.005) | 2.090*** (0.005) | 2.120*** (0.005) |
Adj R-Square | 0.014 | 0.013 | 0.013 | 0.013 |
Subjects size | n = 11,626,010 | n = 11,438,550 | n = 11,447,639 | n = 11,546,567 |