\begin{minipage}[t]{0.4\textwidth}
     \begin{itemize}[label={}]
         \item \textbf{Overall}
         \begin{itemize}[label={}]
             \item Male
             \item Female
         \end{itemize}
         \item \textbf{Race/ethnicity}
         \begin{itemize}[label={}]
             \item White, non-hispanic
             \begin{itemize}[label={}]
             \item Male
             \item Female
         \end{itemize}
         \end{itemize}
     \end{itemize}
     \end{minipage}