The effect of motivational interview conducted by nurses on quality of life: Meta-analysis

Purpose: The aim of the study is to examine the effect of the motivational interviewing method conducted by nurses on the quality of life of patients with chronic diseases. Design and Methods: The studies examined in this meta-analysis study were obtained by scanning the PubMed, Web of Science, EBSCOhost, Google Scholar, and YÖK thesis databases between January and May 2021 without any year limitation. After the elimination, 16 studies were included in the study. The data were synthesized with meta-analysis and narrative methods. The total sample size of the studies was 14,425. Findings: This meta-analysis demonstrated that the motivational interviewing method applied by nurses in individuals with chronic diseases changed their quality of life (SMD: 0.258, 95% confidence interval: 0.076–0.441; Z = 2.775, p = 0.006, I2 = 89.97%). The variance between studies was statistically significant (p < 0.05) for the moderator of the measurement tools, the duration of the motivational interviews, and the country/continent of the studies were conducted (p < 0.05), suggesting that the measurement tools, the duration of the motivational interview, and the country/continent of the studies changed the effect size of the motivational interview method on the quality of life. Practice Implications: It has been concluded that the motivational interview method applied by nurses who are in a critical position in the protection and development of health improves the quality of life of individuals with chronic diseases.