TABLE 1.

Study quality assessment criteria and coding schema¹

Criteria	Unmet/unmentioned responses (score = 0)	Partially met responses (score = 1)	Completely met responses (score = 2)
A priori aim/hypothesis specific to food insecurity	No mention of aim/hypothesis	Implications of food insecurity in aim/hypothesis (i.e., hunger or difficulty affording food)	Explicit mention of food insecurity in aim/hypothesis
Study population clearly specified and defined	No mention of the population the sample is meant to represent	Population partially and/broadly defined	Population clearly defined
Rigorous participant recruitment	Convenience sampling techniques	N/A	Random sample or census
Sufficient sample reporting	No report of response rate or nonresponse bias evaluations	Report response rate or nonresponse bias evaluations	Report response rate and nonresponse bias evaluations
Reliable and valid measures of food insecurity	Measures without psychometric testing	Measures with limited testing or tested in different population	Measures with psychometric testing in related population

¹Criteria based on a scale used previously (43) and the Methods Guide for Effectiveness and Comparative Effectiveness Reviews (44). N/A, not applicable.