Coefficient

std. err.

z

P > |z|

[95% conf. interval]

_bs_1

0.018644

0.00543

3.43

0.001

[0.0080027, 0.0292859]

_bs_2

-0.01741

0.00653

−2.67

0.008

[−0.0302061, −0.004608]