\begin{tabular}{lccc}
\toprule
 & (1) & (2) & (3) \\ 
 & Secondary Market & Central Market& Diff.: p-value \\
\midrule
Competition & 0.10     & 0.17     & 0.00 \\ 
 & (0.10) & (0.18) & \\ 
 \addlinespace
Number of farmers & 681.98   & 447.74   & 0.00 \\ 
 & (722.68) & (433.66) & \\ 
 \addlinespace
Number of traders & 30.55    & 50.33    & 0.00 \\ 
 & (26.56) & (77.65) & \\ 
\bottomrule
\end{tabular}
