Self-Report and Caregiver Proxy-Report Agreement of Perceived Chronic Stress and Mutuality in Poststroke Aphasia.

Background People with aphasia (PWA) report higher levels of stress in comparison to stroke survivors without aphasia. If untreated, chronic stress is known to have detrimental effects to the body and brain and can negatively impact health and well-being. According to extant literature, self- and proxy-report agreement on objective domains is higher than on subjective domains, like chronic stress. In addition, high levels of mutuality, also known as shared feelings between two people, have been strongly associated with low levels of stress in stroke survivors. Little is known, however, of the agreement between self-report and caregiver proxy-report on perceived chronic stress or mutuality in PWA. Purpose The proposed study sought to examine (a) the degree of agreement between caregiver proxy-report and PWA self-report on perceived stress and (b) the relationship between perceived stress and mutuality between PWA and their caregivers. Method The Modified Perceived Stress Scale and the Mutuality Scale were administered to 21 PWA/caregiver dyads. An independent-samples test was conducted to determine if there were significant differences in perceived stress and mutuality as reported by PWA, their caregiver, and their caregiver's proxy-report. A Pearson correlation was performed to determine the level of agreement across questionnaires. Results There was a moderate correlation between the proxy-report and self-report for perceived stress. On average, proxy-reports for perceived stress were significantly higher than PWA self-reports. Overall, mutuality was high among the dyads. There was moderate agreement between caregiver's mutuality and proxy-report agreement on perceived stress. Lastly, our findings do not indicate that caregiver's perceived stress influenced their perception of the PWA's perceived stress. Conclusion The results of this study provide support for the use of proxy-derived information in perceived stress with the use of a mutuality scale.