Fig. 1

Exploratory graph analysis. Note. Each color represents a cluster of items (latent dimension). Nodes (circles) represent observed variables, and edges (lines) represent partial correlations. The magnitude of the partial correlation is represented by the thickness of the edges. Items (1) headache, (2) stomachache, (3) backache, (4) feeling low, (5) irritability/bad temper, (6) feeling nervous, (7) difficulties in getting to sleep, (8) feeling dizzy. The abbreviations of the country names can be found in Table 1