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Table 1 Characteristics of the study patients

From: Plasma cell-free DNA in patients needing mechanical ventilation

  All patients
N = 580
Postoperative patients
N = 229
Non-operative patients
    Infection
N = 124
No infection
N = 227
Age 61 (51, 74) 69 (56, 76) 63 (55, 73) 62 (48, 74)
Male, n (%) 382 (66) 150 (66) 85 (69) 147 (65)
SAPS II 42 (30, 55) 33 (26, 46) 42 (34, 54) 51 (36, 63)
SOFA at 24 hours 8 (5, 10) 7 (5, 9) 7 (5, 10) 8 (6, 10)
Max SOFA total 9 (6,12) 9 (6, 11) 10 (6, 14) 9 (6, 12)
Invasive ventilation, days 2 (1, 4) 2 (1, 4) 2 (0, 5) 2 (1, 4)
Length of stay, ICU, days 3.2 (1.7, 6.8) 2.9 (1.7, 7.1) 5.0 (2.6, 7.7) 2.7 (1.6, 5.8)
Hospital mortality, n (%) 134 (23) 33 (14) 37 (30) 64 (28)
90-day mortality, n (%) 169 (29) 44 (19) 44 (36) 81 (36)
  1. Data are presented in numbers (percentages) or median (interquartile range).
  2. SAPS, Simplified Acute Physiology Score; SOFA, Sequential Organ Failure Assessment; ICU, intensive care unit