Table S1. Risk of bias assessment of included studies using the MOOSE criteria.

Questions	Svensson et al.	King et al.	Wee et al.	Alfonsson et al.	Buffington	Adams et al.	Suzuki et al.	Ertelt et al.	Cuellar-Barboza et al.	Mitchell et al.
Clear definition of study population	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Clear definition of outcomes and outcome assessment	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Independent assessment of outcome parameters	No	Yes	No	No	No	No	No	No	No	No
Sufficient duration of follow-up?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
No selective loss during follow-up?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Important confounders and prognostic factors identified?	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes