Measurement of Uncertainty in Illness
The Medical Uncertainty in Illness Scale (MUIS) was developed by Michel and Braden under the guidance of the theory of medical uncertainty to assess the uncertainty level of adult patients in five aspects: symptoms, diagnosis, relationship with caregivers, treatment and prognosis20. The scale has 25 items in total and adopts the Likert five level scoring method. The scale has a score range of 25-125 points, which can be divided into three levels, namely, low level 25-58 points, medium level 59-91 points and high level 92-125 points.