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Table 3 Cultures performed.

From: Characteristics and outcomes of culture-negative versus culture-positive severe sepsis

Type of culturea Culture-negative patients (n= 415) Culture-positive patients (n= 586) P value Rate of culture positivity (%)b
Blood 410 (98.8) 579 (98.8) 1.00 20.3
Urine 310 (74.7) 445 (75.9) 0.65 11.0
Endotracheal aspirate 216 (52.0) 332 (56.7) 0.15 39.4
Expectorated sputum 101 (24.3) 146 (24.9) 0.84 34.8
Bronchoalveolar lavage 24 (5.8) 32 (5.5) 0.83 51.7
Pleural fluid 12 (2.9) 14 (2.4) 0.62 14.8
Stool 43 (10.4) 74 (12.6) 0.27 4.2
Peritoneal fluid 9 (2.2) 22 (3.8) 0.15 20.6
Bile 0 (0) 6 (1.0) 0.045 83.3
Liver abscess 0 (0) 7 (1.2) 0.046 85.7
Other abscess 1 (0.2) 3 (0.5) 0.65 60.0
Soft tissue and skin 9 (2.2) 36 (6.1) 0.003 65.5
Cerebrospinal fluid 8 (1.9) 8 (1.4) 0.48 12.5
Synovial fluid 1 (0.2) 5 (0.9) 0.41 88.9
Others 6 (1.4) 14 (2.4) 0.29 56.5
  1. aCultures collected within two days before and the two days after ICU admission were included; bcalculated as (total number of positive cultures divided by total number of cultures performed) × 100. ICU, intensive care unit.