Category | Number of "yes" in PRISMA/AMSTAR-2 rating | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|---|
Coefficient (95% CI) | Coefficient (95% CI) | Adjusted R2 | VIF | ||
IF | Number of "yes" in PRISMA | -0.050,0.135 | Â | Â | Â |
AMSTAR-2 rating | -0.047,0.005 | Â | Â | Â | |
Number of authors | Number of "yes" in PRISMA | -0.057,0.118 | Â | Â | Â |
AMSTAR-2 rating | -0.035,0.015 | Â | Â | Â | |
Number of institutions | Number of "yes" in PRISMA | -0.076,0.205 | Â | Â | Â |
AMSTAR-2 rating | -0.038,0.043 | Â | Â | Â | |
Number of included studies | Number of "yes" in PRISMA | -0.018,0.000 | -0.019,-0.001 | 0.142a | 1.013 |
AMSTAR-2 rating | -0.006,0.000 | -0.006,-0.001 | 0.192b | 1.001 | |
International collaborations | Number of "yes" in PRISMA | -0.141,4.031 | Â | Â | Â |
AMSTAR-2 rating | -0.447,0.783 | Â | Â | Â | |
Funding | Number of "yes" in PRISMA | 0.710,5.842 | 1.105,6.095 | 0.142 a | 1.013 |
AMSTAR-2 | -0.272,1.259 | Â | Â | Â | |
Registration | Number of "yes" in PRISMA | -2.395,2.997 | Â | Â | Â |
AMSTAR-2 rating | 0.386,1.832 | 0.448,1.832 | 0.192 b | 1.001 | |
PRISMA statement | Number of "yes" in PRISMA | -0.857,4.166 | Â | Â | Â |
AMSTAR-2 rating | -0.843,0.620 | Â | Â | Â |