Correlations between the One Health index and the proportion of synergies or trade-offs within and between human, animal, and environmental health in countries worldwide in 2020, respectively, at three levels of the One Health index
The three levels included countries with scores ≥80 as performing well (H), those with scores ≤60 as facing substantial challenges (L), and scores between 60 and 80 as performing moderately (M). We used linear regression models to fit lines between the One Health index of countries and the proportion of synergies or trade-offs between and within the three health dimensions.