Interference Between Family Caregivers’ Mental Disorders and Their Estimates of Quality of Dying and Death (QODD) of Their Loved Ones

Abstract

In studies enrolling informal caregivers of patients in palliative care, it is necessary to ensure that findings are not influenced by factors such as mental disorders. This study aims to describe the influence of anxiety and depression on bereaved informal caregivers' retrospective ratings of the quality of dying and death (QoDD) of their loved ones. Informal caregivers of deceased patients from 2 German palliative care (PC) units took part in a validation study of the German version of the original QoDD-Deutsch-Angehörige (QoDD-D-Ang) during the fourth week following the patient's death at the earliest. Depressive and panic disorders were assessed via the Patient Health Questionnaire (PHQ). Group comparisons (χ2, t test; significance level P < .05) analyzed whether informal caregivers with depression or panic disorders and those without such disorders differ in their estimates. A total of 226 informal caregivers participated between August 2012 and December 2013. The mean age of participants was 55.5 years; 61.1% were female. The PHQ of 221 participants resulted in 8.6% with major disorders, 13.6% with other depressive syndromes, and 77.8% without depressive disorders. In this secondary data analysis here, there was no difference between female and male participants concerning the incidence of depression ( P = .519, χ2). Two participants screened positive for both panic and major depressive disorders. Both groups presented no significant differences in the mean total QoDD-D-Ang scores ( P = .343). Informal caregivers' estimates on the QoDD-D-Ang of their significant others do not interfere with mental disorders. Therefore, bereaved informal caregivers are able to participate in the PC research after a few weeks following the loss of a loved one.