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. 2017 Apr 25;8(6):199–210. doi: 10.1177/2042098617702615

Table 4.

Risk factors associated with adverse drug reactions or nonpreventable adverse drug events.

Risk factor Rashed et al.18
Thiesen et al.19
Silva et al.20
Dos Santos and Coelho16
Multivariate analysis
Multivariate analysis
Bivariate/multivariate analysis
Multivariate analysis
(OR; CI 95%; p) (HR; CI 95%; p) (OR; CI 95%; p) (OR; CI 95%; p)
Age 11–18-years old
(2.1; 1.1–3.8; 0.02)
Increasing age
(1.06; 1.04–1.07; <0.001)
<48 months
(2.1; 1.19–3.72; 0.01)
Gender Male
(2.83; 1.19–6.73; <0.05)
Prescription drugs Number of low-risk drugs prescribed (≥1)
(2.3; 1.4–4.0; 0.002)
Increase in the number of prescription drugs
(1.25; 1.22–1.28; <0.001)
Increase in the number of prescription drugs (≥5)*
(2.19; 1.14–4.20, 0.01)
Number of drugs administered (6–10)
(7.45; 1.88–29.65; <0.001)
Number of low-risk drugs prescribed (5–10)
(4.7; 2.4–9.3; <0.001)
Received a GA
(6.38; 5.30–7.68; <0.001)
Number of drugs administered (≥11)
(20.33; 3.57–115.73; <0.05)
Number of low-risk drugs prescribed (>10)
(11.5; 3.6–36.3; <0.001)
Number of high-risk drugs prescribed (≥2)
(2.4; 1.0–5.6; 0.04)
Number of high-risk drugs prescribed (>3)
(6.5; 2.7–16.0; <0.001)
Length of stay Increase in length of stay*
(slope coefficient: 2.75; p = 0.001)
Diagnoses D50–D89
(2.3; 1.0–5.1; 0.04)
Oncology
(1.89; 1.36–2.63; <0.001)
G00–G99
(2.3; 1.3–4.2; 0.006)
P00–P96
(2.6; 1.0–6.5; 0.04)
Combinations Age < 48 months + increase in the number of drugs (≥5)
(2.05; 1.18–3.57; 0.01)

CI, confidence interval; GA, general anesthetic; D50–D89, diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism; G00–G99, diseases of the nervous system; HR, hazard ratio; OR, odds ratio; P00–P96, certain conditions originating in the perinatal period; p, significance level.

*

Variables related to the bivariate analysis.