我的代码的这一部分导致编译花费了很长时间。你们能找出发生这种情况的原因吗?
% Table 6
\begin{table}[!htbp] \centering
\caption{}
\label{}
\begin{tabular}{@{\extracolsep{25pt}} cccc}
\\[-1.8ex]\hline
\hline \\[-1.8ex]
Event time & CAR & Std. err. & P-value \\
\hline \\[-1.8ex]
[-20,-11] & $0.002$ & $0.004$ & $0.545$ \\
[-10,-6] & $0.001$ & $0.002$ & $0.783$ \\
[-5,10] & $0.004$ & $0.004$ & $0.309$ \\
[11,20] & $0.002$ & $0.004$ & $0.594$ \\
[21,60] & $0.003$ & $0.007$ & $0.624$ \\
\hline \\[-1.8ex]
\end{tabular}
\end{table}