\documentclass[table]{bmcart}


\usepackage{booktabs} % for e.g. \toprule
\usepackage{tabularx}
\usepackage{graphicx}


\renewcommand{\topfraction}{.85}
\renewcommand{\bottomfraction}{.7}
\renewcommand{\textfraction}{.15}
\renewcommand{\floatpagefraction}{.66}
\renewcommand{\dbltopfraction}{.66}
\renewcommand{\dblfloatpagefraction}{.66}

\newcommand{\chprefix}{A}
\renewcommand\thefigure{\chprefix.\arabic{figure}}

\begin{document}

\begin{figure}[ht!]
    \centering
    \includegraphics[width = 0.8\textwidth]{plots/QQnormraw.pdf}
    \caption{QQ-plot of model residuals for raw DV {\em Duration Stay}}
    \label{fig:QQplotraw}
\end{figure}


\end{document}