OPD cost | Coef. | Robust Std. Err. | t | p > t | [95% C.I] | VIF | 1/VIF | |
---|---|---|---|---|---|---|---|---|
Lower | Upper | |||||||
time | 0.05 | 0.14 | 0.32 | 0.753 | −.024 | 0.33 | 1.87 | 0.53 |
treated | 0.77 | 0.14 | 5.34 | 0.000 | 0.48 | 1.05 | 2.00 | 0.50 |
did | −0.19 | 0.21 | −0.92 | 0.356 | −0.62 | 0.22 | 2.87 | 0.35 |
_cons | 13.77 | 0.09 | 147.31 | 0.000 | 13.57 | 13.96 | Â | Â |
Mean VIF | Â | Â | Â | Â | Â | Â | 2.25 | Â |
Number of obs | 206 | Â | Â | Â | Â | Â | Â | Â |
F(3, 202) | 13.89 | Â | Â | Â | Â | Â | Â | Â |
Prob>F | 0.0000 | Â | Â | Â | Â | Â | Â | Â |
R-squared | 0.1673 | Â | Â | Â | Â | Â | Â | Â |
Root MSE | 0.76155 | Â | Â | Â | Â | Â | Â | Â |