\documentclass[12pt]{article}
\usepackage{iaw}
\usepackage{rfs}
\usepackage{graphicx}
\graphicspath{ {./images/} }
\usepackage{tabularx}
\newcommand{\mcu}[3]{\mc{#1}{#2}{\underline{#3}}}
\begin{table}[htb]
\caption{Summary statistics, employment and professional experience history}
\begin{tabularx}{\linewidth}{l*{9}{Y}}
\toprule
\multicolumn{8}{l}{\textbf{Panel A: Firm-level, Summary statistics, CEOs}} \\
\midrule
& Mean& SD& Min& p25&
p50& p75& Max& N. Obs.\\
Return on Assets \hspace{1.75cm} & 0.02& 0.01&
-0.02& 0.02& 0.02& 0.03& 0.06& 4543\\
Firm Size (LN) & 8.17& 1.71& 4.25&
6.84& 7.87& 9.26& 11.98& 4798\\
\end{tabularx}
\begin{tabularx}{\linewidth}{l*{9}{Y}}
\toprule
\multicolumn{8}{l}{\textbf{Panel B: Summary statistics, CEOs}} \\
\midrule
& Mean& SD& Min& p25&
p50& p75& Max& N. Obs.\\
CEO Age & 57.39& 7.02& 33.00&
53.00& 58.00& 62.00& 83.00& 4769\\
CEO Female & 0.02& 0.16& 0.00&
0.00& 0.00& 0.00& 1.00& 4820\\
CEO Tenure & 12.28& 9.00& 1.00&
5.00& 10.00& 17.00& 61.00& 4820\\
CEO Equity-based comp.& 0.46& 0.27& -0.34&
0.26& 0.48& 0.69& 1.00& 1359\\
CEO MBA degree & 0.30& 0.46& 0.00&
0.00& 0.00& 1.00& 1.00& 4820\\
\end{tabularx}
\begin{tabularx}{\linewidth}{l*{9}{Y}}
\toprule
\multicolumn{8}{l}{\textbf{Panel C: Employment history and professional
experience, All CEOs}} \\
\midrule
& Mean& SD&
Min& p25& p50& p75& Max& N. Obs.\\
CEO total experience \hspace{.65cm} & 21.49&
8.52& 6.00& 15.00& 20.00& 27.00& 43.00&
4820\\
CEO N of firms & 6.03& 7.01&
2.00& 2.00& 3.00& 7.00& 65.00& 4820\\
\end{tabularx}
\begin{tabularx}{\linewidth}{l*{4}{Y}}
\toprule
\multicolumn{3}{l}{\textbf{Panel D: Frequency of Tier1 ratio
professional experience, CEOs}} \\
\midrule
& Mean&
SD& N. Obs.\\
Negative experience (p5) & 0.077& 0.27&
4816\\
Negative experience (p10) & 0.166&
0.37& 4816\\
\bottomrule
\end{tabularx}
[1]\ Footnote 1: Variable~1 is calculated as\ldots \endgraf
[2]\ Correlations are Pearson.
\end{table}
答案1
表格数组是一款非常方便的表格创建工具。您还可以嵌套类似表格的环境，以防某些部分需要不同数量的列。还可以堆叠表格。
\documentclass[12pt]{article}
% \usepackage{iaw}
% \usepackage{rfs}
\usepackage[demo]{graphicx}
\graphicspath{ {./images/} }
\usepackage{tabularray}
\UseTblrLibrary{booktabs}
\newcommand{\mcu}[3]{\mc{#1}{#2}{\underline{#3}}}
\SetTblrInner[tblr,talltblr]{rows = {rowsep=1pt}}
\begin{document}
\begin{table}[tbh]
\footnotesize
\begin{talltblr}[
caption = {CEOs: Summary statistics, employment and professional experience history},
note{[1]} = {\enspace Footnote 1: Variable~1 is calculated as\ldots},
note{[2]} = {\enspace Correlations are Pearson.},
]{
colspec = {@{} Q[l,4cm] *7{X[c]} X[1.5,c] @{}},
row{1,5,12,16} = {rowsep+=3pt, font=\bfseries},
hline{1-2,5-6,12-13,16-17,Z} = {\heavyrulewidth}, % \heavyrulewidth is a macro from booktabs
}
\SetCell[c=9]{} Panel A: Firm-level, Summary statistics, CEOs &&&&&&&& \\
& Mean & SD & Min & p25 & p50 & p75 & Max & N.Obs. \\
Return on Assets & 0.02 & 0.01 & -0.02 & 0.02 & 0.02 & 0.03 & 0.06 & 4543 \\
Firm Size (LN) & 8.17 & 1.71 & 4.25 & 6.84 & 7.87 & 9.26 & 11.98 & 4798 \\
\SetCell[c=9]{} Panel B: Summary statistics, CEOs &&&&&&&& \\
& Mean & SD & Min & p25 & p50 & p75 & Max & N.Obs. \\
CEO Age & 57.39 & 7.02 & 33.00 & 53.00 & 58.00 & 62.00 & 83.00 & 4769 \\
CEO Female & 0.02 & 0.16 & 0.00 & 0.00 & 0.00 & 0.00 & 1.00 & 4820 \\
CEO Tenure & 12.28 & 9.00 & 1.00 & 5.00 & 10.00 & 17.00 & 61.00 & 4820 \\
CEO Equity-based comp. & 0.46 & 0.27 & -0.34 & 0.26 & 0.48 & 0.69 & 1.00 & 1359 \\
CEO MBA degree & 0.30 & 0.46 & 0.00 & 0.00 & 0.00 & 1.00 & 1.00 & 4820 \\
\SetCell[c=9]{} Panel C: Employment history and professional experience, All CEOs &&&&&&&& \\
& Mean & SD & Min & p25 & p50 & p75 & Max & N.Obs. \\
CEO total experience & 21.49 & 8.52 & 6.00 & 15.00 & 20.00 & 27.00 & 43.00 & 4820 \\
CEO N of firms & 6.03 & 7.01 & 2.00 & 2.00 & 3.00 & 7.00 & 65.00 & 4820 \\
\SetCell[c=9]{} Panel D: Frequency of Tier1 ratio professional experience, CEOs & & & & & & & & \\
\SetCell[c=9]{}
\begin{tblr}{
colspec = {@{}Q[l,4cm] *3{X[c]} @{}},
}
& Mean & SD & N. Obs. \\
Negative experience (p5) & 0.077 & 0.27 & 4816 \\
Negative experience (p10) & 0.166 & 0.37 & 4816
\end{tblr} & & & & & & & & \\
\end{talltblr}
\end{table}
\end{document}
或者，您可以在最后一部分进行左对齐，也可以在列之间保持不同的距离。请参阅以下代码片段：
\SetCell[c=9]{halign=l}
\begin{tblr}{
colspec = {@{}Q[l,4cm] *3{Q[c]} @{}},
column{3-Z} = {leftsep=1.25cm,},
}
& Mean & SD & N. Obs. \\
Negative experience (p5) & 0.077 & 0.27 & 4816 \\
Negative experience (p10) & 0.166 & 0.37 & 4816
\end{tblr} & & & & & & & & \\
以及截图：
