The National Health Service (NHS) will become the first healthcare organization in the world to publish estimates of how many patients may have died because of problems in their care. The publication follows a promise by the health secretary after a 2016 Care Quality Commission report found that the NHS was missing opportunities to learn from patient deaths, and that too many families were not being included or listened to when an investigation happened. The data will be published each quarter by individual trusts. 171 of the 223 trusts in England have already released or are releasing their first estimates by the end of December. Each trust will make its own assessment of the number of deaths due to problems in care. The data will not be comparable and will not be collated centrally.