Tree with multiline text in node and "X" on some text

Question

I am looking to replicate in TeX this tree diagram I made in PowerPoint. What makes it harder than you basic tree is the multiline labels at terminal nodes, the Xs on some terminal node labels and the "R.1/R.2" labels between branches.

It would really bother me to keep the PowerPoint version, but also to spend 1 month trying to figure it out.

Grateful for any help.

Answer 1

This is simple to do with forest. There are plenty of similar trees on the site. I've chosen to add the crosses separately rather than adding the decoration to the forest nodes directly, because this better allows to control their size.

\documentclass{article}
\usepackage[linguistics]{forest}
\usetikzlibrary{decorations,positioning}
\begin{document}
\begin{forest}for tree={l sep'=1cm,s sep'=1cm}
[Undertaking\\ART,name=Art
    [Unsuccesful,name=U
        [Spontaneous\\Conception\\(Only SC child)\\{[A]} ]
        [No Spontaneous\\Conception\\(no conception)\\{[B]},name=B]
    ]
    [Successful
        [Spontaneous\\Conception\\(very rare)\\{[C]},name=C ]
        [No Spontaneous\\Conception\\(only ART child)\\{[D]}]
    ]
]
\node[red,draw,cross out,minimum size=1cm] at (B) {};
\node[red,draw,cross out,minimum size=1cm] at (C) {};
\node[below=1cm of Art] {R.1};
\node[below=.5cm of U] {R.2};
\end{forest}
\end{document}

If you don't like the joined branches that the [linguistics] library uses, don't load it and you'll get branches that aren't joined. In this case you need to add the align=center specification to the tree to allow linebreaks in the nodes.

\documentclass{article}
\usepackage[]{forest}
\usetikzlibrary{decorations,positioning}
\begin{document}
\begin{forest}for tree={l sep'=1cm,s sep'=1cm,align=center}
[Undertaking\\ART,name=Art
    [Unsuccesful,name=U
        [Spontaneous\\Conception\\(Only SC child)\\{[A]} ]
        [No Spontaneous\\Conception\\(no conception)\\{[B]},name=B]
    ]
    [Successful
        [Spontaneous\\Conception\\(very rare)\\{[C]},name=C]
        [No Spontaneous\\Conception\\(only ART child)\\{[D]}]
    ]
]
\node[red,draw,cross out,minimum size=1cm] at (B) {};
\node[red,draw,cross out,minimum size=1cm] at (C) {};
\node[below=1cm of Art] {R.1};
\node[below=.5cm of U] {R.2};
\end{forest}
\end{document}

Answer 2

Here is my own answer, found with the help of @Alan Munn:

\documentclass{article}

    \usepackage{tikz}
      \usetikzlibrary{positioning}
      \usetikzlibrary{calc}
      \usetikzlibrary{trees}

\begin{document}

\begin{tikzpicture}[
    level 1/.style = {black, sibling distance = 8cm},
    level 2/.style = {black, sibling distance = 4cm},
    level distance = 3cm, % Increase the level distance  
  ]

  \node [align=center] (undertaking) {Undertaking \\ ART cycle}
  child {node [align=center] (succ) {Unsuccessful}
  child {node (A) [align=center] {Spontaneous \\ Conception \\ {\small (only SC child)} \\ {[A]}}}
  child {node (B) [align=center] {No Spontaneous \\ Conception \\ {\small (no conception)} \\ {[B]}}}
  }
  child {node (unsucc) {Successful}
  child {node (C) [align=center] {Spontaneous \\ Conception \\ {\small (only SC child)} \\ {[C]}}}
  child {node (D) [align=center] {No Spontaneous \\ Conception \\ {\small (no conception)} \\ {[D]}}}
  };

  \node [align=center, below=1cm of undertaking] {\bfseries R.1};
  \node [align=center, below=1cm of succ] {\bfseries R.2};
  \node [align=center, below=1cm of unsucc] {\bfseries R.2};
  \node[red,draw,cross out,minimum size=1.5cm] at (B) {};
  \node[red,draw,cross out,minimum size=1.5cm] at (C) {};
\end{tikzpicture}

\end{document}