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Table 3 Cox regression proportional hazard analysis for factors influencing 28-day survival

From: Clinical characteristics and outcome of very elderly patients ≥90 years in intensive care: a retrospective observational study

Variables

Hazard-ratio (95 % CI)

p value

Univariate analysis for 28-day outcome

 Planned surgery

0.242 (0.143–0.409)

<0.001

 Medical admission

2.156 (1.515–3.068)

<0.001

 Unplanned surgery

1.357 (0.945–1.948)

0.098

 Mechanical ventilation

3.186 (2.216–4.58)

<0.001

 Catecholamines

2.602 (1.819–3.722)

<0.001

 Renal replacement

1.379 (0.438–4.335)

0.583

 Age

1.085 (1.022–1.151)

0.008

 Sex (female)

0.753 (0.524–1.081)

0.124

 pH

0.829 (0.626–1.097)

0.189

 Leukocytes

1.032 (1.007–1.0579

0.01

 Creatinine

1.328 (1.168–1.511)

<0.001

 Hemoglobin

0.97 (0.872–1.079)

0.576

 Bilirubin

1.435 (1.186–1.736)

<0.001

Multivariate analysis for 28-day outcome

 Planned surgery

0.439 (0.225–0.856)

0.016

 Medical

1.125 (0.665–1.902)

0.661

 Mechanical ventilation

1.513 (0.819–2.796)

0.186

 Catecholamines

2.224 (1.195–4.139)

0.012

 Age

1.14 (1.045–1.243)

0.003

 Leukocytes

1.017 (0.986–1.049)

0.276

 Creatinine

1.224 (1.033–1.45)

0.02

 Bilirubin

1.281 (1.046–1.569)

0.017

  1. CI Confidence interval
  2. All parameters at ICU admission