Figure 2.

Counts of findings by outcome and green space measure with symbols representing the following associations between academic performance and green space: + = statistically significant positive association, 0 = non-statistically significant association, and - = statistically significant negative association. Metric distances (e.g., “Up to 250 m”) represent the radius of circular buffers or diameter of polygons centered on a school. Statistical significance requires p < 0.05 for 50% or more of analyses summarized in articles that included a measure or proxy for socioeconomic status (i.e., the percentage of students eligible free-or-reduced lunch) because SES often predicts green space cover and vice-versa [57,70,71]. As such, bivariate correlation coefficients were not included in this summary.