Fig 1.
PRISMA flow diagram of data collection.
Table 1.
Keywords and online search strategy.
Table 2.
A brief summary of the descriptive statistics.
Fig 2.
Funnel plot for publication bias.
Fig 3.
Forest plot of internal social influence.
Fig 4.
Forest plot of external social influence.
Fig 5.
Forest plot of network factors.
Fig 6.
Forest plot of trust factors.
Table 3.
A brief summary of the meta regression results.