Table 3 Provisional eligibility decision tree for full text exclusion

1

Duplicate

Record is a duplicate of another study already included in the review

2

Animal study

Study conducted in non-human population

3

Study withdrawn

Study was withdrawn before results became available

4

Ongoing study

Study is ongoing; No study results have been published. Study will be described in ‘Ongoing studies’ section of the review.

5

Wrong intervention

Study does not include screening for type 2 diabetes mellitus

6

Wrong study design

Study is not eligible as per Appendix 1 study designs.

7

Wrong population

Study intervention/ outcomes involve individuals who have type 2 diabetes mellitus or are pregnant

8

Research question is inappropriate

Study is not eligible due to inappropriate research question or objectives that do not address systematic review objectives.

9

Wrong Outcomes

Study does not report outcomes that align with primary or secondary outcome measures.