Table I.

Prescription quality.

	Group A			Group B			Group C
	Baseline	12 months	p-value	Baseline	12 months	p-value	Baseline	12 months	p-value	p-value overall
Number of drugs per patient (median)	8.0	9.0	0.029	10.0	11.0	0.655	10.0	10.0	0.454	0.382
Number of drug-risk indicators per patient (median)	2.0	2.0	0.181	2.0	2.0	0.813	2.0	2.0	0.401	0.444
Number of medication errors per patient (median)	5.0	2.0	0.099	3.0	2.0	0.031	3.0	3.0	0.862	0.331
Proportion of correct medication lists (%)	10.0	18.0	0.130	4.0	13.0	0.029	8.0	12.0	0.371	0.614
Proportion of patients with interactions of C type (%)	60.6	57.8	0.135	43.9	48.7	0.327	42.4	48.5	0.705	0.788
Proportion of patients with interactions of D type (%)	3.0	3.0	0.655	2.6	7.7	0.317	21.2	6.1	0.096	0.088