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Measuring harm and informing quality improvement in the Welsh NHS: the longitudinal Welsh national adverse events study.

Mayor S; Baines E; Vincent C; Lankshear A; Edwards A; Aylward M; Hogan H; Harper P; Davies J; Mamtora A; Brockbank E; Gray J.

This publication compared the use of the Global Trigger Tool with a two-stage retrospective review process to design a method to monitor health care–associated harm in Welsh National Health Service hospitals. Analyzing results from 11 of the 13 system hospitals, investigators determined that a hybrid incident review approach that does not rely on physician involvement can return reliable data.