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. 2022 Jul 5;27(9):3647–3656. doi: 10.1038/s41380-022-01670-z

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© The Authors 2022, corrected publication 2022

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Fig. 2 — Some characteristics of the meta-analyses are displayed: mean age (yo = years old), class, sample size (N), and risk of bias (RoB; Low = more than 75% of the participants were in studies at low risk of bias; Med. = 50% to 75% of participants were in studies a low risk of bias; High = less than 50% of participants were in studies at low risk of bias).