Tree

Level 2 Category 4 subcategories

Definition

A branching visual structure used to represent hierarchical relationships, such as classifications, decision paths, or evolutionary lineages.

Example Image

Reproduced from Journal of Intenational Medical Research, 49(10). https://doi.org/10.1177/03000605211053232. Licensed under CC BY-NC 4.0.

Writing Alternative Text

Describe the branching structure that organizes items or concepts, and any notable relationships, groupings, or hierarchical patterns.

Example Alt Text

"Decision tree for cytokine detection classifies patients by IL-6 and TNF-alpha levels. IL-6 at least 8.19 leads to active phase, 36.7 percent of patients. Below 8.19, IL-6 at least 4.63 branches by TNF-alpha: at least 10.8 gives active phase, 39.0 percent, and below 10.8 gives remission, 4.8 percent. IL-6 below 4.63 branches at TNF-alpha 5.93 to active phase, 3.8 percent, or remission, 15.7 percent."