2.2 Data Extraction
The result of the literature search retrieved 793 studies for screening process. After duplicates were removed using EndNote 7 software, 358 records were retrieved for initial screening. The primary checking of the abstracts produced 45 studies addressing CABG patients. After examination of full-text articles, 8 eligible studies were finally included in the literature review, after excluding articles that concentrate on the effect of psychological interventions. The full text of articles was examined based on the title first for suitability, then the abstract of the studies was reviewed, then full text. Outcomes measured other than those stated in the inclusion criteria also excluded. Thus, eight studies were considered in the review. Figure. 1 presented the selection of studies based on The PRISMA 2020 flow diagram.5