Fig. 1From: Visualizing healthcare system variability and resilience: a longitudinal study of patient movements following discharge from a Swedish psychiatric clinicDynamic safety model. Modified from Cook R, & Rasmussen J. Qual Saf Health Care 2005;14 [2]:130–134. It addresses how current conditions in healthcare lead to accidents over time. Gradients push the operation point towards the acceptable performance boundary and increase the risk of crossing the boundary (failure)Back to article page