Fig 1.
PRISMA 2020 flow diagram for systematic reviews.
N, number of studies.
Table 1.
Study population characteristics, extracted outcomes and assessed limitations and Risks of Bias (ROBs).
Fig 2.
Meta-analytic estimates of prevalence extracted from Long COVID systematic reviews.
N, number of studies; CI, confidence interval; NR, not reported.
Fig 3.
Median and interquartile ranges of prevalence estimates extracted from Long COVID systematic reviews.
N, number of studies; IQR, interquartile range.
Table 2.
AMSTAR 2 assessments of all SRs.
Table 3.
Recommendations for mitigating biases in Long COVID studies.