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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: Shock. 2015 Aug;44(0 1):63–70. doi: 10.1097/SHK.0000000000000376

Figure 4. Systems and Subsystems of the COMBAT Study.

Figure 4

This highly abbreviated systems tree for the COMBAT study is excerpted from the organizational documents used during development of the study. In this view, only the “Plasma Thawing and Administration” subsystem is broken out into third and fourth order detail as an example. If all the nested systems, subsystems and component descriptions were unpacked, the document would run to several hundred pages. Such organizational trees are essential to define and organize operational elements throughout the development of a study of this complexity, and also aid in the process of quality assurance and improvement.