A systematic review and meta-analysis of the effectiveness of food safety education interventions for consumers in developed countries

Table 5 Meta-regression results of the impact of selected study-level variables on the meta-analysis estimates

Meta-analysis sub-group/predictor	No. trials/studies	Average estimate of effect (95 % CI)	Adjusted R^2a
RCT-behaviour-SMD	10/10
Dose (>1 vs. 1 exposure)		0.68 (0.03, 1.33)	44.6 %
UBA-knowledge-RR	22/20
Document type (other vs. journal)		2.01 (1.18, 3.43)	19.3 %
UBA-behaviour-RR	20/17
Target population engaged in intervention (yes vs. no)		1.47 (1.02, 2.11)	27.4 %

RCT randomized controlled trials, UBA uncontrolled before-and-after studies, SMD standardized mean difference (Hedges’ g), RR relative risk, CI confidence interval
^aAdjusted R² refers to the proportion of between-study variance accounted for by the model

ISSN: 1471-2458