Reporting

Study	Study design	Q1: Aim clearly described	Q2: Outcomes clearly described	Q3: Patients characteristics clearly described	Q4: Interventions clearly described	Q6: Main findings clearly described	Q7: Random variability for main outcome provided	Q9: Lost to follow up reported	Q10: Actual p-value reported
Maron et al [29]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	No	No
Corrado et al [30]	Cohort	Yes	Yes	Yes	Yes	Yes	Yes	U	Yes
Fuller et al [31]	Cohort	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
Pelliccia et al [32]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	No	No
Basso et al [33]	Case review	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Baggish et al [34]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Hevia et al [35]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
Magalski et al [36]	Cohort	Yes	Yes	Yes	Yes	Yes	Yes	U	Yes
Bessem et al [37]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Sofi et al [38]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Tanaka et al [39]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Marek et al [40]	Cohort study	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes
Steinvil et al [41]	Cohort	Yes	Yes	Yes	Yes	Yes	No	No	Yes
Wilson et al [42]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	No	No
Pelliccia et al [43]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
Le et al [44]	Cross sectional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes