The effect of motivational interviewing on quality of life and self-efficacy behaviors of individuals with chronic illness: A meta-analysis study

ObjectiveThis study aims to reveal the effect of the motivational interviewing on the quality of life and self-efficacy behaviors of individuals with chronic diseases.Material-methodFor this meta-analysis study, PubMed, Web of Science, EBSCOhost, Google Scholar, and Y & Ouml;K Theses databases were searched in January-May 2021 without year limitation. As a result, 38 studies were included in the study: 23 for the quality of life variable, and 21 for the self-efficacy behaviors variable (in 6 studies, both variables were examined together). The data were synthesized with meta-analysis and narrative methods. The total sample size of the studies is 25,425.ResultsThis meta-analysis study showed that the motivational interviewing applied to individuals with chronic diseases changed their quality of life (SMD: 0.296, %95 CI: 0.054-0.537, Z = 2.402, p = .016, I2 = %95). The type of chronic disease, measurement tool, sample group, disease group, age range, and whether the motivational interviewer was a nurse or not changed the effect size of the motivational interviewing on the quality of life. The self-efficacy score average of the experimental group to which motivational interviewing was applied was statistically similar to that of the control group (SMD: 0.141, %95 CI: -0.065, 0.347; Z = 1.346, p = .178, I2 = %87).ConclusionsAs a result of the meta-analysis, it was determined that the use of motivational interviewing increased the quality of life level of individuals with chronic diseases. However, it is thought that more research is needed because some studies were conducted with small sample size and prepost test design. The results of the study may provide guidance on the interventions to be used in improving the quality of life of individuals with chronic diseases.