Table 4. Comparison of research performance and impact between regions.

Variable	Test statistic	Visualization of mean rank	Pairwise comparison
Research Performance (Component 1)	χ 2 (6, N = 204) = 41.952, p = 0.000		There are significant differences (marked with yellow lines in the visualization) between: •    Pacific Region & Middle East ( p = 0.000) •    Pacific Region & Eastern Europe ( p = 0.000) •    Latin America & Middle East ( p = 0.038) •    Latin America & Eastern Europe ( p = 0.005) •    Africa & Middle East ( p = 0.036) •    Africa & Eastern Europe ( p = 0.004) •    Pacific Region & Asiatic Region ( p = 0.01)
Research Impact (Component 2)	χ 2 (6, N = 204) = 29.363, p = 0.000		There are significant differences (marked with yellow lines in the visualization) between: •    Middle East & Latin America ( p = 0.020) •    Asiatic Region & Latin America ( p = 0.023) •    Eastern Europe & Latin America ( p = 0.001)

p-values have been adjusted by the Bonferroni correction for multiple tests; the significance level is 0.05