The ALARM method is a structured framework for analyzing the root causes of an adverse event. Developed for the healthcare sector, it groups contributing factors into distinct categories to move beyond simply looking for someone to blame. Its goal is to understand why a system failed, not just who made the mistake.
ALARM factors: the categories that structure root cause analysis
The method is based on a framework that breaks each adverse event down into groups of factors. Each category corresponds to a different level of the organization, from the patient to the facility’s strategic management.
- Patient-related factors: age, health status, ability to communicate, social isolation. A vulnerable patient who is unaccompanied on admission increases the risk of an identification error or incomplete information being passed on.
- Factors related to the tasks to be performed: available protocols, clarity of procedures, accessibility of decision-support tools. A note posted in the treatment room but unknown to temporary staff protects no one.
- Factors related to individuals (care providers): level of training, experience in the role, fatigue, cognitive workload at the time of the event.
- Team-related factors: communication between professionals, handovers, coordination between departments. A doctor admitting a patient during a night shift does not have the same support as during the day.
- Factors related to the work environment: room layout and ergonomics, prescription software performance, missing or incorrectly configured technical alerts.
- Factors related to organization and management: training policy, staffing management, continuity of care during transfers between departments.
The analysis works when every category is explored systematically, even if the cause seems obvious from the outset. A duplicate anticoagulant prescription, for example, may involve software with no duplicate alert, pharmacy understaffing, and inadequate training for junior doctors on medication handovers.
To explore each of these dimensions in more depth, the ALARM method framework sets out the questions to ask for each category of factors.

Applying the ALARM method step by step in risk analysis
Having the framework is not enough. ALARM analysis follows a specific sequence that determines the quality of the results.
Reconstruct the timeline of events
Before classifying anything into categories, you need to establish a factual account of the event: who did what, in what order, and what information was available at each point. This step eliminates assumptions and hindsight-based reconstructions.
The reconstruction is based on individual interviews with the professionals involved, a review of the case file, and a check of electronic records. The goal is to describe, not to accuse.
Explore each category of factors
Once the timeline has been established, each link in the chain is examined through the six categories. A common temptation is to stop at the individual factor (the nurse made a mistake). ALARM analysis requires you to look further: why could this error occur without being detected by the system?
A real-world example from the hospital sector illustrates this approach. In a blood typing error, all identity-checking procedures had been followed. The problem was an identity theft that the system could not detect with the tools available. An analysis of task- and organization-related factors helped identify this structural limitation.
Identify missing or failing safeguards
Each factor identified corresponds to a safety barrier that did not work. The analysis must distinguish between barriers that existed but were bypassed, those that existed but were unsuitable, and those that had never been put in place.
The HAS then recommends checking whether the corrective measures decided on after the analysis actually improve safety. A corrective action that is not evaluated over time is not a reliable safeguard.
ALARM-E: the extended version for a more comprehensive analysis
Since 2016, an enhanced version called ALARM-E has incorporated additional dimensions into the analysis. It takes into account the patient’s experience, the entire episode of care, detection and recovery mechanisms, and the institutional context.
This development addresses a limitation of the original version: traditional ALARM focuses on what caused the event, but examines less closely what might have helped catch it before it caused harm. ALARM-E formalizes this dual perspective (causes and recovery) within a single framework.
The method is not limited to hospitals. Studies conducted as part of nursing education programs show that ALARM analysis can be used to examine mistakes made during training, not just events that occur in professional practice. The framework remains the same: break down the contributing factors to draw lessons that can be applied elsewhere.

Adapting the ALARM framework to specific contexts
The method is not limited to its original six categories. For the analysis of medication errors, for example, a category dedicated to healthcare products can be added. It covers the medication’s appearance, similarities between packaging, unusual dosages, and the absence of a formulation suited to the patient.
This flexibility explains the method’s longevity in risk management. The principle remains the same: no event has a single cause. Only the list of factors to examine changes according to the field of application.
Sharing the findings is the final step that is often overlooked. The HAS emphasizes the importance of sharing lessons from each analysis anonymously and collectively. An ALARM analysis report left in a drawer changes no practices. Shared learning from experience, on the other hand, serves as a prevention tool in its own right.



