\documentstyle[fleqn,11pt]{article}  % fleqn just indents the displays
\parindent 0in                       % .2in or .3 in or any indent you want
\pagestyle{empty}                    % plain gives numbering of pages
\setlength{\mathindent}{18pt}
\setlength{\oddsidemargin}{1.4in}    % -.25in makes wider magrins, e.g.
\setlength{\topmargin}{5pt}          % -.5in makes top margin higher
\headheight 0pt
\headsep 0pt
\textheight 9in                      % Change this when changing topmargin
% \textwidth 6.5in                     % Change this when changing oddsidemargin
\parskip 8pt
\renewcommand{\baselinestretch}{1.0} % Change this 1.5 or whatever

\begin{document}
\begin{center}
Table 2: Probit Analysis of TBDD and TCDD Data \\
\vspace*{2ex}
\end{center}
% \begin{center}
\begin{tabular}{lccccccc}
\multicolumn{8}{l}{1) P-Values for 3-Parameter vs. 4-Parameter Models} \\
\multicolumn{8}{c}{} \\
\multicolumn{2}{c}{} & \multicolumn{3}{c}{Wald}
 & \multicolumn{1}{c}{} & \multicolumn{2}{c}{Score} \\ \cline{3-5} \cline{7-8}
\multicolumn{8}{c}{} \\
\multicolumn{1}{l}{Hypothesis} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{$T_{W}$} & \multicolumn{1}{c}{$T_{GW}$} &
\multicolumn{1}{c}{SAS} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{$T_{S}$} & \multicolumn{1}{c}{$T_{GS}$} \\ \cline{1-1}
\cline{3-3} \cline{4-4} \cline{5-5} \cline{7-7} \cline{8-8}
               &  &     &     &     & &     &      \\
Common Slope   &  & .72 & .84 & .81 & & .72 & .84  \\
Quadratic Term &  & .83 & .89 & .90 & & .84 & .89  \\
               &  &     &     &     & &     &      \\
               &  &     &     &     & &     &      \\
\end{tabular}

\begin{tabular}{lcrcrrr}
\multicolumn{7}{l}{2) Final Model Estimates and Standard Errors} \\
\multicolumn{7}{c}{} \\
\multicolumn{4}{c}{} & \multicolumn{3}{c}{Standard Errors} \\ \cline{5-7}
\multicolumn{7}{c}{} \\
\multicolumn{1}{l}{Parameter} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{Estimate} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{$\hat{I}^{-1}$} &
\multicolumn{1}{c}{$\hat{I}^{-1}\hat{D}\hat{I}^{-1}$} &
\multicolumn{1}{c}{SAS} \\ \cline{1-1} \cline{3-3} \cline{5-5} \cline{6-6}
\cline{7-7}
               &  &  &        &      &      &      \\
Intercept(TBDD) &  & --14.16\hspace*{1em} & & 1.14 & 2.06\hspace*{1em} & 1.74 \\
Intercept(TCDD) &  &  --9.26\hspace*{1em} & &  .74 & 1.26\hspace*{1em} & 1.13 \\
Common Slope    &  &   3.39\hspace*{1em} & &  .27 &  .48\hspace*{1em} &  .42 \\
                &  &        &      &      &      \\
               &  &  &        &      &      &      \\
\end{tabular}

\begin{tabular}{lcrcrrcrrcrr}
\multicolumn{12}{l}{3) Median Effective Dose and Relative Potency Estimates} \\
\multicolumn{12}{c}{} \\
\multicolumn{4}{c}{} & \multicolumn{8}{c}{95\% Confidence Limits} \\
 \cline{5-11}
\multicolumn{12}{c}{} \\
\multicolumn{4}{c}{} &
\multicolumn{2}{c}{$\hat{I}^{-1}$} & \multicolumn{1}{c}{} &
\multicolumn{2}{c}{$\hat{I}^{-1}\hat{D}\hat{I}^{-1}$} & \multicolumn{1}{c}{} &
\multicolumn{2}{c}{SAS} \\ \cline{5-6} \cline{8-9} \cline{11-12}
\multicolumn{12}{c}{} \\
\multicolumn{1}{l}{Parameter} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{Estimate} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{L} &
\multicolumn{1}{c}{R} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{L} &
\multicolumn{1}{c}{R} & \multicolumn{1}{c}{} &
\multicolumn{1}{c}{L} &
\multicolumn{1}{c}{R} \\
\cline{1-1} \cline{3-3} \cline{5-5} \cline{6-6} \cline{8-8}
\cline{9-9} \cline{11-11} \cline{12-12}
         & & & & &      &  &  &        &      &      &      \\
ED50(TBDD)& & 65.2\hspace*{1em} & & 60.5 & 70.4 & & 58.1 & 72.0 & &56.8 &75.2 \\
ED50(TCDD)& & 15.4\hspace*{1em} & & 14.7 & 16.1 & & 14.1 & 17.0 & &14.2 &16.8 \\
Rel. Potency& &4.25\hspace*{1em} & &3.89 & 4.64 & & 3.61 & 4.81 & &     &     \\
         & & & & &      &  &  &        &      &      &      \\
\end{tabular}

Note: The $T_{GW}$ test statistic is defined in (1) and $T_{W}$
has the same form but with $\hat{I}_{f22}$ in place of $\hat{V}_{22}$.
SAS results are from SAS PROC PROBIT.   $\hat{D}$
has been multiplied by  N/(N--p)=149/145 or 149/146,
and the p-values in Part 1) use t percentiles with N--p=145 or 146
 degrees of freedom.


\end{document}