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| Criterion |  Operations Root Cause Tree Analysis |  Operations Root Cause Analysis |  Decision Making Decision Tree |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | For decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-3 h | 1-4 h | 30-90 min | 2-4 h |
Participantsdifferent | 2-8 | 3-8 | 1-6 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Decision Tree, Option Map, Assumption List | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Root causeTreeIncidentQuality | Root causeProblem solvingQualityIncident | DecisionTreeOptions | Root causeSafetyIncident |