\begin{tabular}{lcccccc}\hline\hline\multicolumn{5}{l}{\textbf{Dep. variable: $\Delta$ monthly visits}}\\ &\multicolumn{2}{c}{All users}&\multicolumn{2}{c}{Low attendance}&\multicolumn{2}{c}{High attendance}\\ &\multicolumn{2}{c}{}&\multicolumn{2}{c}{users}&\multicolumn{2}{c}{users}\\ &Coeff. & Std. Err. & Coeff. & Std. Err. & Coeff. & Std. Err.\\
\cmidrule(l{4pt}r{4pt}){2-3}\cmidrule(l{4pt}r{4pt}){4-5}\cmidrule(l{4pt}r{4pt}){6-7}
$\Delta$ Treated    &       0.309   &     (0.456)&       1.616***&     (0.520)&      -1.047   &     (0.714)\\
Constant            &      -1.473***&     (0.273)&      -1.026***&     (0.303)&      -2.079***&     (0.443)\\
\hline
R$^2$               &       0.002   &            &       0.066   &            &       0.020   &            \\
Observations        &         247   &            &         138   &            &         109   &            \\
\hline\hline\end{tabular}
