Table 4 Prescription costs per patient—results of bivariate robust regression analyses and Spearman’s—rho coefficients in gastroenterology (n = 485)
From: Factors associated with prescribing costs: analysis of a nationwide administrative database
Independent variables | R2 lmrob | Spearman |
|---|---|---|
Number of patients | .01 | − .49 |
Average age of patients | .06 | − .22 |
Median age of patients | .05 | − .20 |
Proportion of pensioners | .07 | − .23 |
Proportion of female patients | .00 | − .12 |
Morbidity index | .00 | .07 |
Proportion of prescriptions issued (PPI) | .03 | .49 |
Proportion of DDD issued (PDDD) | .01 | .23 |
Proportion of polypharmacy patients | .02 | .38 |
Proportion of polypharmacy patients ≥ 2Q | .02 | .35 |