Figure 1
The flow begins with a text box labeled “Identification N equals 3000.” A right-pointing arrow leads to a text box labeled “Screening N equals 997.” From “Screening N equals 997,” a right-pointing arrow leads to a text box labeled “Eligible N equals 155.” From “Eligible N equals 155,” a right-pointing arrow leads to a text box labeled “Analyze N equals 50.”Extraction process. Source: Authors’ own elaboration