From the article: > A death is considered preventable if the committee determines that there was at least some chance of the death being averted by one or more

From the article: > A death is considered preventable if the committee determines that there was at least some chance of the death being averted by one or more reasonable changes to patient, community, provider, facility, and/or systems factors. This isn't science or even data, it's the opinion of some reviewing doctors.