\begin{Schunk}
\begin{Sinput}
 confint(mod1)
\end{Sinput}
\begin{Soutput}
                   2.5 %     97.5 %
(Intercept) 27.165443886 40.2839844
GRIP         0.007898305  0.1242813
\end{Soutput}
\end{Schunk}
