TABLE 2.

Quality assessment criteria results for farm to school program and farm to school–related activity studies¹

Criterion of study quality2	Farm to school program studies (n = 7)	Farm to school–related activity studies (n = 14)
Study design (0–2)	0.43 ± 0.53	2.00 ± 0.00
Sample size (0–1)	0.57 ± 0.53	0.93 ± 0.27
Metrics/measures (0–2)	1.29 ± 0.76	1.93 ± 0.27
Data analyses (0–2)	0.57 ± 0.53	1.79 ± 0.43
Intervention fidelity assessment (0–1)	0.43 ± 0.53	0.79 ± 0.43
Total quality assessment score (0–8)	3.29 ± 1.70	7.43 ± 0.51

¹Values are means ± SDs. All explicitly farm to school studies were included, but only strong farm to school–related activities were included.

²Possible score range is provided in parentheses. Points were attributed as follows: research design—nonrandomized comparison group (1), randomized groups (2); sample size—sample size is too small (0), sample size is appropriate (1); metrics/measures—tool or tools are not valid or validity and reliability are not described (0), tools are valid but not reliable or reliability not described (1), valid and reliable tool or tools (2); data analysis—methods are inappropriate and inadequately described with enough detail to ensure reproducibility (0), methods are adequately described but may not be appropriate or methods seem appropriate but not fully described (1), methods are adequately described and appropriate (2); and assessment of intervention fidelity—not assessed (0), assessed (1). Total quality assessment score was derived through the sum of the 5 individual criteria. Total scores ≥3 were considered weak, scores of 4–6 were considered fair, and scores of 7–8 were considered strong.