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Table 1 Distribution of baseline characteristics among COVID-19 patients and non-COVID-19 patients in the ICU

From: Nosocomial infections among COVID-19 patients: an analysis of intensive care unit surveillance data

Baseline characteristics COVID-19 patients (n = 71) Non-COVID-19 patients (n = 487) All patients (n = 558) Chi-squared test
Age, median (IQR)a 52 (39–66) 66 (55–75) 65 (53–74) < 0.001
Male 59 (83.10) 299 (61.40) 358 (64.16) < 0.001
Length of stay in ICU, Median days (IQR)a 6 (2–9) 2 (1–4) 2 (2–4) < 0.001
Underlying diseases
Overall comorbidities 25 (35.21) 342 (70.23) 367 (65.77) < 0.001
Chronic pulmonary diseases 2 (2.82) 60 (12.32) 62 (11.11) 0.017
Cardiovascular diseases 4 (5.63) 100 (20.53) 104 (18.64) 0.003
Connective tissue disease 0 (0.00) 11 (2.26) 11 (1.97) 0.201
Peptic ulcer disease 0 (0.00) 13 (2.67) 13 (2.33) 0.164
Chronic neurological diseases 2 (2.82) 79 (16.22) 81 (14.52) 0.003
Chronic kidney disease 5 (7.04) 125 (25.67) 130 (23.30) 0.001
Diabetes Mellitus 19 (26.76) 197 (40.45) 216 (38.71) 0.027
Malignant diseases 1 (1.41) 82 (16.84) 83 (14.87) 0.001
Chronic liver diseases 1 (1.41) 24 (4.93) 25 (4.48) 0.180
Immunosuppression 2 (2.82) 30 (6.16) 32 (5.73) 0.258
  1. aRank sum test