Table 4

Relationship between patient's and prescription's characteristics and potential drug-drug interactions

Variables
Patients without potential drug-drug interactions in their prescription
n = 132
Patients with at least one potential drug-drug interactions in their prescription
n = 492

Gender (female)
105 (79.5)
386 (78.5)
Civil status (single)
61 (46.2)
259 (52.6)
Did not work
102 (77.3)
416 (84.6)
Literacy (only elementary school o less)
67 (54.9)
266 (62.9)
Patient age ≥ 60*
87 (65.9)
406 (82.5)
Number of disease ≥ 3*
73 (55.3)
396 (80.5)
Cardiovascular disease*
43 (32.6)
403 (81.9)
Musculoskeletal and joint disorders
126 (95.5)
471(95.7)
Gastrointestinal disease
48 (36.4)
205 (41.7)
Endocrine, alimentary and metabolic disease*
38 (28.8)
275 (55.9)
Pulmonary disease
8 (6.0)
31 (6.3)
Mental disease
12 (9.1)
21 (4.3)
Neurological disease
11 (8.3)
40 (8.1)
Infections and parasitic disease
30 (22.7)
88 (17.9)
Number of medicines ≥ 5*
50 (37.9)
383 (77.8)

*p < 0.05

Doubova (Dubova) et al. BMC Health Services Research 2007 7:147   doi:10.1186/1472-6963-7-147