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Table 1 Demographics and clinical characteristics of patients infected or colonized by extended-spectrum β-lactamase producing Escherichia coli

From: Molecular epidemiology of extended-spectrum β-lactamase-producing Escherichia coli in the community and hospital in Korea: emergence of ST131 producing CTX-M-15

  Total episodes (n = 202) Hospital-onset (n = 95) Community-onset
    Total (n = 107) Healthcare-associated (n = 62) Community-associated (n = 45)
Age, year, mean (range) 60 (0–97) 68.3 (5–97) 52.7 (0–85) 64.3 (0–85) 36.7 (0–85)
Gender, M: F 79:123 50:45 29:78 19:43 10:35
Healthcare-associated risk factors
    Previous Admission 89 (44.1) 41 (43.2) 48 (44.9) 48 (77.4) NAa
    History of long term care facility stay 34 (16.8) 20 (21.1) 14 (13.1) 14 (22.6) NAa
    Hemodialysis 16 (7.9) 9 (9.5) 7 (6.5) 7 (11.3) NAa
    Surgery/invasive procedures 56 (27.7) 46 (48.4) 10 (9.3) 10 (16.1) NAa
Co-morbidity      
    Cerebrovascular disease 85 (42.1) 63 (66.3) 22 (20.6) 18 (29.0) 4 (8.9)
    Diabetes 68 (33.7) 40 (42.1) 28 (26.2) 22 (35.5) 6 (13.3)
    Chronic kidney disease 48 (23.8) 17 (17.9) 31 (29.0) 25 (40.3) 6 (13.3)
    Malignancy 40 (19.8) 22 (23.3) 18 (16.8) 16 (25.8) 2 (4.4)
    Heart failure 27 (13.4) 20 (21.1) 7 (6.5) 5 (8.1) 2 (4.4)
    Chronic lung disease 18 (8.9) 15 (15.8) 3 (2.8) 2 (3.2) 1 (2.2)
    Liver cirrhosis 14 (6.98) 7 (7.4) 7 (6.5) 7 (11.3) 0 (0)
    Transplant 6 (3.0) 3 (3.2) 3 (2.8) 1 (1.6) 2 (4.4)
    Obstructive uropathy 18 (8.9) 1 (1.1) 17 (15.9) 12 (19.4) 5 (11.1)
Vascular catheter 58 (28.7) 55 (57.9) 3 (2.8) 3 (4.8) 0 (0)
Urinary catheter 94 (46.5) 76 (80) 18 (16.8) 18 (29) 0 (0)
Recent use of antibiotics 141 (69.8) 88 (92.6) 53 (49.5) 34 (54.8) 19 (69.8)
Infection: colonization 105:97 34:61 71:36 41:21 30:15
Type of infection      
    Bloodstream infection 23 (11.4) 4 (11.8) 19 (26.8) 12 (29.3) 7 (23.3)
    Urinary tract infection 49 (24.3) 5 (14.7) 44 (44) 23 (56.1) 21 (70)
    Lung infection 20 (9.9) 17 (50) 3 (4.2) 3 (7.3) 0 (0)
    Intra-abdominal infection 5 (4.8) 5 (14.7) 1 (1.4) 1 (2.4) 0 (0)
    SSTb/bone infection 5 (6.7) 3 (8.8) 4 (5.6) 2 (4.9) 2 (6.7)
Colonization site      
    Urine 56 (54.6) 28 (45.9) 25 (69.4) 13 (61.9) 12 (80)
    Respiratory tract 23 (23.7) 20 (32.8) 3 (8.3) 3 (14.3) 0 (0)
    Wound 8 (8.2) 8 (13.1) 0 (0) 0 (0) 0 (0)
    Bile 4 (4.1) 1 (1.6) 3 (8.3) 3 (14.3) 0 (0)
    Others 9 (9.3) 4 (6.6) 5 (13.9) 2 (9.5) 3 (20)
No. of isolates collected 142 (70.3) 61 (64.2) 81 (75.7) 46 (74.2) 35 (77.8)
  1. Data are no. (%) of patients, unless otherwise indicated.
  2. aNA, not applicable.
  3. bSST, skin and soft tissue infection.