Skip to main content

Table 1 Characteristics, clinical specimen distribution, and culture positive rate of SBA and SAA groups

From: Effect of prior receipt of antibiotics on the pathogen distribution: a retrospective observational cohort study on 27,792 patients

 SBA group
N = 19,868
SAA group
N = 7924
P value
Demographic
 Age in yr, medians (IQR)60 (47–70)61(49–72)< 0.001
 male (%)12,477 (62.8%)4938 (62.3%)0.443
Department distribution
 Intensive Care Unit1582 (8.0%)499 (6.3%)< 0.001
 Surgery departments8760 (44.1%)3873 (48.9%)< 0.001
 Internal departments8849 (44.5%)3114 (39.3%)< 0.001
 Others677 (3.4%)428 (5.5%)< 0.001
Distribution of Clinical specimens
 Respiratory specimens a7351 (37.0%)3162 (39.9%)< 0.001
 Blood4229 (21.3%)1196 (15.1%)< 0.001
 Body fluid specimens b1495 (7.5%)1131 (14.3%)< 0.001
 Urine4311 (21.7%)947 (12.0%)< 0.001
 Stool403 (2.0%)297 (3.7%)< 0.001
 Other specimens c2079 (10.5%)1191 (15.0%)< 0.001
Culture positive rate
 Culture positive, n (%)5650 (28.4%)2014 (25.4%)< 0.001
 Polymicrobial result, n (%)d864 (15.3%)320 (15.9%)0.525
  1. Abbreviations: SBA specimen taken before antibiotic therapy, SAA specimen taken after antibiotic therapy
  2. a including sputum, throat swab, tracheal aspirate, protected bronchial brush, and bronchoalveolar lavage
  3. b including cerebrospinal fluid, pleural fluid, ascites, bile, puncture fluid, and pericardial effusion
  4. c including intravascular catheter tip, various secretions, peritoneal dialysate, pus, drainage fluid, biopsy tissue and other specimens
  5. d Polymicrobial result was defined as more than one pathogen cultured from the same specimen