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Table 2 Quality of studies according to Newcastle-Ottawa Scale

From: Association between physical activity and infertility: a comprehensive systematic review and meta-analysis

First author, Year, country Selection (Max,score4) Comparability (Max,score2) Exposure(case-control) or outcome (cohort) (max,score3)
Cohort
 Rich-Edwards, 2002 2 2 2
 Cong, 2016 2 2 1
 Esmaeilzadeh, 2013 2 2 2
 Lei, 2015 3 1 2
 Gudmundsdottir, 2009 4 1 2
 Läänelaid, 2021 3 2 1
Case-control
 Foucaut, 2019 4 1 2
 Green, 1986 3 2 1
 Forman, 1994 3 1 2
 Dhair, 2020 3 2 1