\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}
treat_post          &       0.192   &     (0.605)&       0.660   &     (0.768)\\
Constant            &      -1.052***&     (0.356)&      -0.499   &     (0.452)\\
\hline
R$^2$               &       0.001   &            &       0.010   &            \\
Observations        &         144   &            &          78   &            \\
\hline\hline\end{tabular}
