From: Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Items for Systematic Reviews and Meta-
Analyses: The PRISMA Statement. PLoS Med 6(6): e1000097. doi:10.1371/journal.pmed1000097
For more information, visit www.prisma-statement.org.
Figure 1
PRISMA Diagram
Identification
Records identified through
database searching
(n=579)
PubMed (n=18)
Google scholar (n=549)
Science Direct (n=12)
Screening
Included
Eligibility
Additional records identified
through other sources
(n = 1)
Duplicate articles removed
(n = 149)
Records screened based on title and
abstract
(n=226)
Full-text articles assessed for eligibility
(n = 56)
Studies included in qualitative synthesis
(n =11)
97
