\begin{table}[H]
\centering
\caption{Sample Construction by Market Segment}
\label{tab:sample}
\begin{threeparttable}
\begin{tabular}{lrrrr}
\toprule
& Houses & Condos & Plex & Land \\
\midrule
Raw listings & 18,920 & 9,347 & 4,619 & 9,595 \\
After coordinate validation & 18,650 & 9,200 & 4,580 & 9,500 \\
After structural variable filter & 7,200 & 1,150 & 4,100 & 9,450 \\
After outlier trimming (0.5\%/99.5\%) & 6,250 & 1,031 & 3,755 & 9,239 \\
\midrule
Retention rate & 33.0\% & 11.0\% & 81.3\% & 96.3\% \\
\midrule
Median price (\$) & 579,000 & 425,000 & 799,000 & 150,000 \\
Mean price (\$) & 774,646 & 491,000 & 935,000 & 243,000 \\
Price range (\$) & 99K--5.3M & 89K--2.8M & 215K--9.5M & 12K--3.1M \\
\bottomrule
\end{tabular}
\begin{tablenotes}
\small
\item \textit{Note:} The low retention rate for condos reflects the high proportion of listings missing interior floor area. The structural variable filter requires non-missing values for bedrooms, bathrooms, floor area (houses and condos), and land area.
\end{tablenotes}
\end{threeparttable}
\end{table}