Table 3
Meta-analysis Authors, Year | No. of Studies in Meta-analysis | No. of Participants in Meta-analysis | Main Findings of Meta-analysis | Q Test P Value | I2 Statistic | Egger or Begg Test P Value | Quality Assessment and Outcome |
---|---|---|---|---|---|---|---|
Pereira et al, 200424,a | 9 | 306 064 | RR = 0.91,bP = .005 | NS | NR | ||
Threapleton et al, 201323 | 12 | NR | RR = 0.91,cP < .001 | NS | 33% | NR | NOS 10/12 high quality |
Wu et al, 201425 | 16 | 561 756 | RR = 0.93, P < .001 | NS | 0% | NS | NOS 13/16 high quality |
Kim and Je, 201627 | 8 | 500 672 | RR = 0.76, P < .05 | NS | 40% | NS | 4/8 high quality |
NOS, Newcastle-Ottawa scale; NR, not reported; NS, not significant; RR, relative risk.
aLow-quality score on the Critical Appraisal Checklist for Systematic Reviews.
b10 g/d.
c7 g/d.