Table 5. Squared multiple correlations (R²) for each observed variable of the model.

Scale/item	R2
Trust
12	0.468
13	0.406
16	0.566
20	0.711
Drug quality
4	0.444
5	0.737
6	0.585
State audit
17	0.741
18	0.741
19	0.417
Fiscal impact
7	0.248
10	0.415
11	0.584
Knowledge
1	0.219
2	0.278
3	0.792
Drug substitution
8	0.491
9	0.672