\begin{tabular}{lcccc}\hline\hline\multicolumn{5}{l}{\textbf{Dep. variable: $\Delta$ monthly visits}}\\ &\multicolumn{2}{c}{All users}&\multicolumn{2}{c}{Low attendance}\\ &\multicolumn{2}{c}{}&\multicolumn{2}{c}{users}\\ &Coeff. & Std. Err. & Coeff. & Std. Err.\\
\cmidrule(l{4pt}r{4pt}){2-3}\cmidrule(l{4pt}r{4pt}){4-5}
$\Delta$ Treated    &       0.223   &     (1.046)&       1.593   &     (1.098)\\
Constant            &      -1.387   &     (0.963)&      -1.004   &     (1.015)\\
\hline
R$^2$               &       0.000   &            &       0.038   &            \\
Observations        &         105   &            &          55   &            \\
\hline\hline\end{tabular}
