Coefficient | std. err. | z | P > |z| | [95% conf. interval] | |
_bs_1 | 0.021177 | 0.004514 | 4.69 | 0.001 | [0.0123291, 0.0300249] |
_bs_2 | 0.01994 | 0.005445 | −23.66 | 0.001 | [−0.030611, −0.009268] |