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Table 4 Univariable and multivariable analysis of the association between age, sex, and clinical mediators associated with the presence of significant ventricular, supraventricular arrhythmia, and premature complexes

From: Risk factors and clinical outcomes of arrhythmias in the medical intensive care unit

  Supraventricular (n = 44) Ventricular (n = 27) Premature complexes (n = 82)
Univariable Multivariablea Univariable Multivariableb Univariable Multivariablea
Variable n (%) RR (95 % CI) p value RR (95 % CI) p value RR (95 % CI) p value RR (95 % CI) p value RR (95 % CI) p value RR (95 % CI) p value
Sex              
 Female 87 (40.5) Ref     Ref     Ref    
 Male 128 (59.5) 0.98 (0.57–1.68) 0.946 0.99 (0.48–2.03) 0.975 1.42 (0.73–2.77) 0.301
Age              
 21–50 66 (30.7) Ref   Ref   Ref     Ref   Ref  
 51–70 79 (36.7) 1.78 (0.82–3.86) 0.147 1.26 (0.56–2.82) 0.572 1.53 (0.60–3.93) 0.375 5.29 (1.63–17.15) 0.005 4.82 (1.48–15.70) 0.009
 >71 70 (32.6) 2.24 (1.05–4.77) 0.037 1.47 (0.68–3.14) 0.325 1.57 (0.60–4.09) 0.355 6.91 (2.17–22.08) 0.001 6.07 (1.88–19.65) 0.003
 ARF 108 (50.2) 1.73 (0.99–3.02) 0.052 1.47 (0.86–2.49) 0.151 1.07 (0.53–2.17) 0.858 1.19 (0.70–2.02) 0.523
 SHK 17 (7.9) 2.20 (1.16–4.18) 0.015 1.62 (0.74–3.54) 0.227 2.03 (0.79–5.19) 0.142 0.55 (0.15–2.10) 0.386
 ISC 45 (20.9) 1.58 (0.91–2.77) 0.107 2.02 (1.08–3.78) 0.027 0.66 (0.24–1.81) 0.416 1.11 (0.59–2.08) 0.741
 AKI 91 (42.3) 2.38 (1.37–4.14) 0.002 1.93 (1.09–3.37) 0.022 1.47 (0.72–2.97) 0.287 1.14 (0.67–1.93) 0.638
 DCHF 30 (14.0) 0.79 (0.34–1.85) 0.588 1.07 (0.40–2.89) 0.890 2.31 (1.35–3.97) 0.002 1.66 (0.97–2.84) 0.066
 GLU 86 (40.0) 1.37 (0.81–2.32) 0.241 0.63 (0.29–1.38) 0.249 0.86 (0.49–1.49) 0.584
 L-INF 101 (47.0) 1.63 (0.95–2.80) 0.076 1.08 (0.58–2.00) 0.815 1.05 (0.52–2.12) 0.896 1.13 (0.67–1.91) 0.653
 S-INF 60 (27.9) 1.96 (1.17–3.30) 0.011 1.67 (0.88–3.16) 0.116 1.52 (0.74–3.13) 0.257 0.76 (0.40–1.44) 0.401
 ABD 40 (18.6) 0.83 (0.40–1.72) 0.613 1.25 (0.54–2.90) 0.603 0.97 (0.49–1.93) 0.936
 E-DB 32 (14.9) 0.90 (0.42–1.96) 0.797 0.46 (0.11–1.84) 0.271 1.47 (0.78–2.76) 0.231
 CNS 19 (8.8) 0.75 (0.26–2.21) 0.608 0.83 (0.21–3.23) 0.783 1.32 (0.59–2.96) 0.496
  1. ARF acute respiratory failure, SHK shock, ISC acute myocardial ischemia, AKI acute kidney injury, DCHF decompensated CHF, GLU hyperglycemia, L-INF local infection, S-INF systemic infection, ABD acid/base disturbance, E-DB electrolyte imbalance, CNS acute CNS event
  2. aFactors included in the model had p < 0.20 in univariable analyses
  3. bModel was not built because only one factor had a p < 0.20