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Table 4 Logistic regression analysis

From: Prevalence of QTc interval prolongation and its associated risk factors among psychiatric patients: a prospective observational study

VariablesUnivariate analysisMultivariate analysis
OR (95% CI)p-valueOR (95% CI)p-value
Gender
 FemaleReference Reference 
 Male3.2 (1.1–9.5)0.035.6 (1.6–19.8)0.007
Age (years)
  ≤ 202.1 (0.5–7.7)0.262.8 (0.6–11.3)0.15
 21–30Reference Reference 
 31–401.1 (0.2–4.5)0.871.3 (0.2–5.9)0.71
  > 402.1 (0.6–7.3)0.202.5 (0.6–9.1)0.16
All prescribed drugs
 1Reference Reference 
 2–32.9 (0.3–22.7)0.325.5 (0.5–57.2)0.14
  > 33.5 (0.4–28.9)0.258.5 (0.6–111.3)0.10
QT prolonging Drugs
 1Reference Reference 
  ≥ 21.7 (0.7–3.9)0.221.9 (0.6–5.1)0.23
Medical illnesses
 Psychosis1.2 (0.2–5.1)0.845.7 (0.7–41.8)0.08
 Obsessive compulsive disorder2.1 (0.4–10.1)0.322.3 (0.2–19.9)0.45
 Schizophrenia1.04 (0.1–8.2)0.978.2 (0.7–95.1)0.09
 Major depression0.8 (0.3–1.9)0.673.8 (0.7–20.4)0.11
 Manic depressive psychosis1.6 (0.4–5.6)0.472.3 (0.3–13.6)0.35
Co-morbid illnesses
 Hypertension1.3 (0.3–4.5)0.690.5 (0.1–2.9)0.50
 Antipsychotics1.6 (0.6–3.6)0.281.9 (0.4–9.3)0.38
 Proton pump inhibitors0.3 (0.04–2.4)0.266.6 (0.7–62.5)0.09
 Other drugs1.8 (0.3–8.3)0.440.6 (0.1–3.9)0.59