Table 4.

Al combination of multiple regression models with 2, 3 or 4 independent variables and their R² with and without interaction included

	Independent variables				R2
Models	β1	β2	β3	β4	No interaction	Interaction
1	Equivalence to Risperidone	Number of psychodrugs	NA	NA	0.277	0.283
2	Equivalence to Risperidone	NA	Illicit drugs	NA	0.003	0.004
3	Equivalence to Risperidone	NA	NA	Amount of diagnostics	0.001	0.009
4	NA	Number of psychodrugs	Illicit drugs	NA	0.281	0.294
5	NA	Number of psychodrugs	NA	Amount of diagnostics	0.279	0.297
6	NA	NA	Illicit drugs	Amount of diagnostics	0.003	0.073
7	Equivalence to Risperidone	Number of psychodrugs	Illicit drugs	NA	0.282	0.370
8	Equivalence to Risperidone	Number of psychodrugs	NA	Amount of diagnostics	0.280	0.317
9	Equivalence to Risperidone	NA	Illicit drugs	Amount of diagnostics	0.003	0.081
10	NA	Number of psychodrugs	Illicit drugs	Amount of diagnostics	0.284	0.333
11	Equivalence to Risperidone	Number of psychodrugs	Illicit drugs	Amount of diagnostics	0.285	0.424

Note: each model [1 to 11] was run 2 times, one with interaction and the other without interaction