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Table 5 Univariate models and multivariate models for risk factors predicting 12-month mortality, n = 1055a

From: Intensive care–treated cardiac arrest: a retrospective study on the impact of extended age on mortality, neurological outcome, received treatments and healthcare-associated costs

  Univariate model Multivariate model
Variable OR (95 % CI) p OR (95 % CI) p
Age     
 Young (< 75y) 1   1  
 Elderly ( > = 75) 3.44 (2.44–4.84) < 0.001 2.90 (1.94–4.31) < 0.001
Pre-admission functional status     
 Independent 1   1  
 Dependent 4.20 (2.55–6.92) < 0.001 2.37 (1.36–4.14) 0.002
Initial CA-rhythm     
 Non-shockable 1   1  
 Shockable 0.33 (0.26–0.42) < 0.001 0.46 (0.33–0.64) < 0.001
Location of arrest     
 OHCA 1   1  
 IHCA 2.07 (1.61–2.67) < 0.001 1.36 (0.92–1.99) 0.119
 ICUCA 2.29 (1.52–3.449 < 0.001 3.84 (2.05–7.19) < 0.001
Witnessed arrest (not witnessed = 1) 0.59 (0.40–0.86) < 0.006 0.72 (0.46–1.15) 0.169
Time to ROSC in 10-minute intervals 1.04 (0.93–1.16) 0.520 1.63 (1.37–1.93) < 0.001
APACHE II-score excluding age pointsb 2.34 (2.01–2.73) < 0.001 2.21 (1.82–2.69) < 0.001
Total TISS-pointsb 0.99 (0.98-1.00) 0.001 0.98 (0.98–0.99) 0.002
  1. a A total of 1055 patients were included. 60 patients had missing functional status, 68 patients had missing initial rhythm, 24 patients had missing if the arrest was witnessed, 118 patients had missing time to ROSC, 1 patient had missing APACHE II-score.
  2. b Each step increases the variable by 10