Table 1.
Multiple linear regression analysis of possible explanatory variables for the serum pentosidine levels.
| Total |
Poly |
|||
|---|---|---|---|---|
| (N = 274) | (N = 68) | |||
| Independent variables: | b(SE) | β | b(SE) | β |
| Duration of education | – | – | – | – |
| Total BPRS score | – | – | – | – |
| Estimated duration of medication | 0.318 (0.139) | 0.197* | 0.900 (0.443) | 0.365* |
| Daily dose of antipsychotics | 0.012 (0.003) | 0.390*** | 0.014 (0.007) | 0.368* |
| Daily dose of antiparkinsonian drugs | – | – | – | – |
| Daily dose of anxiolytics | – | – | – | – |
| Constant | 32.0 | 16.2 | ||
| R2 | 0.195*** | 0.407*** | ||
Multiple linear regression analysis includes six possible explanatory variables for all 274 patients and for the polypharmacy treatment group. Statistical values of independent factors excluded from the first step of the equation are not shown. *p < 0.05, **p < 0.01, ***p < 0.001 (22).
BPRS, brief psychiatric rating scale; Poly, polypharmacy treatment group (treated with both types of antipsychotics; at least one of each); SE; standard error. Reprinted from Ref. (20), Copyright (2017), with permission from Elsevier (license number; 4241900807314).