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Table 1 Inclusion criteria for Cochrane reviews (after abstract screening)

From: Study filters for non-randomized studies of interventions consistently lacked sensitivity upon external validation

Inclusion criteria
I1a Most current version of a Cochrane review
I2a A Cochrane review evaluating an intervention on a health-related question (e.g. can also include topics from the field of public health)
I3a A Cochrane review not only including RCTs or NRCT
I4a A Cochrane review including NRS (based on the section “Main results” of the abstract of the Cochrane review)
I5a A Cochrane review including < 65 studies