\begin{tabular}{l*{4}{r @{} l}}
\hline
                         &\multicolumn{8}{c}{\shortstack{Take-up of ``more'' visits contract}}\\
                         &\multicolumn{2}{c}{\shortstack{8+ visits \\ (1)}}&\multicolumn{2}{c}{\shortstack{12+ visits \\ (2)}}&\multicolumn{2}{c}{\shortstack{16+ visits \\ (3)}}&\multicolumn{2}{c}{\shortstack{Pooled \\ (4)}}\\
\hline
Behavior change premium  &       0.019&*  &       0.020&*  &       0.026&*  &       0.022&** \\
(z-score)                &     (0.011)&   &     (0.012)&   &     (0.013)&   &     (0.010)&   \\
\hline
Dep. var. mean:          &        0.64&   &        0.49&   &        0.32&   &        0.49&   \\
                         &      (0.02)&   &      (0.01)&   &      (0.02)&   &      (0.01)&   \\
\hline  Wave FEs         &         Yes&   &         Yes&   &         Yes&   &         Yes&   \\
Contract FEs             &          No&   &          No&   &          No&   &         Yes&   \\
N                        &         849&   &       1,248&   &         849&   &       2,946&   \\
Clusters                 &         849&   &       1,248&   &         849&   &       1,248&   \\
\hline\hline
\end{tabular}