Table 1.
Details of the search process for each database.
Fig 1.
PRISMA flow diagram for the search process.
(Descriptive caption: A flow diagram illustrates the search process, namely inputs and outcomes of the identification, screening and quality assessment phases. Described is a sequence of steps which started with 185 records identified in the initial search and additional 59 studies from search reruns, and which resulted in the 14 studies that were included in the present systematic review).
Table 2.
Results of quality assessment of included reports.
Table 3.
Study characteristics of the included sample.
Table 4.
Study designs of the included sample.
Table 5.
Study results of the included sample.