"Treated : _b[_t] + _b[_z_t] + _b[_x_t2010] + _b[_z_x_t2010]"
"Controls : _b[_t] + _b[_x_t2010]"
"Difference : _b[_z_t] + _b[_z_x_t2010]"
"Linear Trend Coef. Std. Err. t P > t [95% Conf. Interval]"
"Treated –.1362793 .0543098 –2.51 0.014 –.243942 –.0286165"
"Controls –.0236838 .0327033 –0.72 0.471 –.0885142 .0411466"
"Difference –.1125954 .0590808 –1.91 0.059 –.2297162 .0045253"