
	
	
	
		\begin{threeparttable}
		
		\caption{Treatment effects for baseline model and model disentangling voice and monopoly effects, comparison of OLS and poisson coefficients}
		%\scalebox{0.85}{
			
			\footnotesize
			\begin{tabular}{ l S S S S S [table-format=3.2]}
				
				
				
				&& {(5)} & {(6)} & {(7)} & {(8)}  \\     
				& {Estimated model} & {baseline} & {voice} & {baseline coll. agr.} & {voice coll. agr.} \\    
				\hline
				
				
		Treat $\times$ 1998                     			 	&{OLS}& 0.082    & 0.203  & -0.682    & -0.180   \\
				                                 			 	&{Poisson}&  0.257  & 0.344 &  0.285  & 0.372    \\
		Treat $\times$ 1999                     			 	&{OLS}& -0.629    & -0.661  & -0.257    & -0.540   \\
																&{Poisson}& -0.128   & -0.130 &  0.065  & -0.035 \\   
		Treat $\times$ 2000                     			 	&{OLS}& -0.680    & -0.702  & -0.433    & -0.530   \\
																&{Poisson}& -0.171   & -0.181 &  -0.151  & -0.181    \\		
		Treat $\times$ 2002                     			 	&{OLS}& -1.123**    & -1.183**  & 0.158    & -0.105   \\
																&{Poisson}& -0.344**   & -0.356** &  0.101  & 0.053    \\		
		Treat $\times$ 2003                     			 	&{OLS}& -1.626***    & -1.662***  & -0.706    & -0.771   \\
																&{Poisson}& -0.596***   & -0.589** &  -0.110  & -0.104    \\     
		Treat $\times$ 2004                     			 	&{OLS}& -0.737    & -0.716  & 0.084    & -0.108   \\
																&{Poisson}& -0.278   & -0.269 &  0.022  & 0.090    \\														                            			 	
		Treat $\times$ Post  $\times$ Coll. agr. $\times$ 1998  &{OLS}		&     &            & 0.795    & 0.385   \\
				                                 		 		&{Poisson}&    &  & -0.034   & -0.044    \\
		Treat $\times$ Post  $\times$ Coll. agr. $\times$ 1999  &{OLS}		&     &            & -0.442    & -0.140   \\
																&{Poisson}&    &  & -0.232   & -0.112    \\				                                 		 
		Treat $\times$ Post  $\times$ Coll. agr. $\times$ 2000  &{OLS}		&     &            & -0.287    & -0.196   \\
																&{Poisson}&    &  & -0.016   & 0.005    \\
		Treat $\times$ Post  $\times$ Coll. agr. $\times$ 2002  &{OLS}		&     &            & -1.510**    & -1.268**   \\
																&{Poisson}&    &  & -0.541***   & -0.499***    \\				                                  						  								   	  										   	  			                                  
		Treat $\times$ Post  $\times$ Coll. agr. $\times$ 2003  &{OLS}		&     &            & -1.044    & -1.016   \\
																&{Poisson}&    &  & -0.555***   & -0.552**    \\
		Treat $\times$ Post  $\times$ Coll. agr. $\times$ 2004  &{OLS}		&     &            & -0.520    & -0.728   \\
																&{Poisson}&    &  & -0.368   & -0.456    \\																
				\hline
			\end{tabular} 
		
	%}
		\begin{tablenotes}
			\footnotesize
			\item Notes: Dependent variable is the number of voluntary quits. Standard errors are robust. */ **/ *** denote significance at the 10\%/5\%/1\% level, respectively. Statistics and corresponding p-values from F-test on joint significance of (Treat $\times$ Post) and (Treat $\times$ Post $\times$ Coll. Agr.) in specification (7) for the  regression for the year 2000, 2002, 2003 and 2004 are 0.66 (0.516), 5.33 (0.005), 4.10 (0.017) and 0.86 (0.424), respectively.
			Statistics and corresponding p-values from $\chi^2$-test on joint significance of (Treat $\times$ Post) and (Treat $\times$ Post $\times$ Coll. Agr.) in specification (7) for the poisson regression for the year 2000, 2002, 2003 and 2004 are 0.81 (0.666), 12.56 (0.002), 9.41 (0.001) and 2.59 (0.274), respectively.
			Statistics and corresponding p-values from F-test on joint significance of (Treat $\times$ Post) and (Treat $\times$ Post $\times$ Coll. Agr.) in specification (8) for the OLS regression for the year 2000, 2002, 2003 and 2004 are 0.60 (0.547), 4.64 (0.010), 3.87 (0.021) and 0.99 (0.373), respectively.
			Statistics and corresponding p-values from $\chi^2$-test on joint significance of (Treat $\times$ Post) and (Treat $\times$ Post $\times$ Coll. Agr.) in specification (8) for the poisson regressions for the year 2000, 2002, 2003 and 2004 are 0.86 (0.650), 12.08 (0.002), 8.12 (0.017) and 3.23 (0.198), respectively.
		\end{tablenotes}

	
	\end{threeparttable}	

	
	
	
	
	
	
	
	
	
	
