Table 1

Changes in GPs' drug prescription annual cost per patient.

Intervention areasControl departmentsMann–Whitney U test
Baseline, €Post-intervention, €Difference, € (evolution rate, %)Baseline, €Post-intervention, €Difference, € (evolution rate, %)UTwo-tailed P-value
Age-sex adjusted annual cost per patient
A307312+ 5 (+ 1.8)311319+ 8 (+ 2.8)0.0000.05
B301303+ 2 (+ 0.5)296301+ 5 (+ 1.9)
C298290− 8 (− 2.4)307315+ 8 (+ 2.7)