Table 5

Factors related to the potential drug-drug interactions

Variables

Odds ratio

95% Confidence intervals

Adjusted Odds Ratio

95% Confidence intervals

Patient age ≥ 60

2.44*

1.59 – 3.75

1.66*

1.01 – 2.74

Cardiovascular disease

9.37*

6.09 – 14.41

7.26*

4.61 – 11.44

Number of medicines ≥ 5

5.76*

3.82 – 8.69

4.34*

2.76 – 6.83

Adjustment variables: number of disease ≥ 3 and endocrine, alimentary and metabolic disease.

Goodness of fit > 0.05

*P < 0.05

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