\begin{tabular}{*{3}{l}}
\hline
                  & \multicolumn{2}{c}{M1}   \tabularnewline
                   &Estimate  &(S.E.)  \tabularnewline
 \hline
 \hline
   (Intercept)     &0.066*   &   (0.027) \tabularnewline
   sexM            &-0.134***   &   (0.039) \tabularnewline
 \hline
 N                 &2683       &        \tabularnewline
 RMSE             &0.998         & \tabularnewline
 $R^2$             &0.004         & \tabularnewline
 \hline
\hline
 
 \multicolumn{3}{c}{${*  p}\le 0.05$${*\!\!*  p}\le 0.01$${*\!\!*\!\!*  p}\le 0.001$}\tabularnewline
 \end{tabular}