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Table 3 Cox proportional hazards regression for long-term mortality

From: Culture positivity may correlate with long-term mortality in critically ill patients

Characteristics

Univariable Univariable

Multivariable

HR (95% CI)

p value

HR (95% CI)

p value

Age, per 1 year increment

1.017 (1.014–1.019)

< 0.001

1.008 (1.005–1.010)

< 0.001

Male gender

1.136 (1.046–1.235)

0.003

1.201 (1.104–1.308)

< 0.001

Body mass index, per 1 decrement

1.025 (1.016–1.034)

< 0.001

1.035 (1.026–1.045)

< 0.001

Charlson comorbidity index, per 1 increment

1.192 (1.166–1.219)

< 0.001

1.120 (1.093–1.148)

< 0.001

APACHE II, per 1 increment

1.095 (1.089–1.102)

< 0.001

1.053 (1.046–1.061)

< 0.001

Receiving mechanical ventilation

2.093 (1.887–2.322)

< 0.001

1.068 (0.953–1.198)

0.256

Fluid overload, day 1–3, per 1 L increment

1.096 (1.085–1.106)

< 0.001

1.050 (1.039–1.061)

< 0.001

Receiving renal replacement therapy

2.309 (2.097–2.543)

< 0.001

1.469 (1.324–1.631)

< 0.001

Presence of shock

2.565 (2.366–2.780)

< 0.001

1.521 (1.387–1.667)

< 0.001

Immunocompromised patients

2.418 (2.200–2.658)

< 0.001

2.341 (2.123–2.581)

< 0.001

Positive culture of MDRO1

1.774 (1.635–1.925)

< 0.001

1.008 (1.005–1.010`)

< 0.001

Culture site

 Blood

2.141 (1.938–2.364)

< 0.001

1.233 (1.104–1.378)

< 0.001

 Respiratory tract

1.873 (1.731–2.028)

< 0.001

1.217 (1.109–1.337)

< 0.001

 Urinary tract

1.648 (1.504–1.807)

< 0.001

1.230 (1.109–1.364)

< 0.001

 Skin and soft tissue

1.519 (1.198–1.927)

0.001

0.943 (0.741–1.200)

0.633

 Abdomen

1.835 (1.516–2.223)

< 0.001

1.028 (0.846–1.249)

0.780

  1. 1MDRO, included methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococci, and carbapenem-resistant Gram-negative bacilli. HR hazard ratio, CI confidence interval, APACHE acute physiology and chronic health evaluation, MDRO multidrug-resistant organism