Figure 2
The flowchart is structured with four main stages on the left side, stacked vertically: IDENTIFICATION, SCREENING, ELIGIBILITY, and INCLUDED. The process flows downward: IDENTIFICATION: The process begins with “Search results (n equals 1816).” This total is broken down into two sources: “Scopus (n equals 1811)” and “Manually added (n equals 5).” SCREENING: The first step is “Removed duplicates (n equals 22),” which leads to “Articles screened on title and abstract (n equals 1794).” ELIGIBILITY: From the screened articles, “Excluded on focus (n equals 1523)” are removed, leaving “Full-text articles assessed for eligibility (n equals 271).” INCLUDED: From the eligible articles, another set is removed as “Excluded on focus (n equals 220),” resulting in “Articles included for the final analysis (n equals 51).”PRISMA flow chart. Source: Created by authors