\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Subgroup Effects: Sociocultural Variables \label{tab:informal}}
\begin{tabular}{l*{2}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}\\
                    &\multicolumn{1}{c}{Base}&\multicolumn{1}{c}{Full}\\
                    &        b/se         &        b/se         \\
\hline
Treatment $\times$ Exports $\times$ Informal&      15.470         &      13.697         \\
                    &    (20.584)         &    (22.575)         \\
Treatment $\times$ Imports $\times$ Informal&     -19.533         &     -12.969         \\
                    &    (15.159)         &    (16.282)         \\
Treatment $\times$ Non-traded $\times$ Informal&      -2.070         &       0.033         \\
                    &    (12.585)         &    (11.691)         \\
\hline
N                   &        2416         &        2273         \\
r2                  &       0.073         &       0.093         \\
\hline\hline
\multicolumn{3}{l}{\footnotesize \sym{*} \(p<0.05\), \sym{**} \(p<0.01\), \sym{***} \(p<0.001\)}\\
\end{tabular}
\end{table}
