\begin{center}
 \begin{tabular}{*{2}{l}}
 \hline
               & Estimate  \\
              & (S.E.)  \\
\hline 
 \hline
  (Intercept)   &    70.661 \\
    &   ( 82.509) \\
  age   &    1.574 \\
    &   ( 3.14) \\
  sex   &    -11.544 \\
    &   ( 11.239) \\
  height   &    -0.063 \\
    &   ( 0.802) \\
  weight   &    0.791 \\
    &   ( 0.861) \\
 \hline 
N   &    25 \\
 $RMSE$       & 27.378  \\
 $R^2$       & 0.441  \\
 adj $R^2$       & 0.33  \\
 \hline\hline
* $p \le 0.05$\end{tabular}
\end{center}