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Table 1 Clinical and microbiological characteristics, host response and nutritional status of hvKp

From: Hypervirulent Klebsiella pneumoniae (hypermucoviscous and aerobactin positive) infection over 6 years in the elderly in China: antimicrobial resistance patterns, molecular epidemiology and risk factor

Characteristic

HvKp (80)

cKp (95)

P value

K serotype

 K1

26 (32.5%)

3 (3.2%)

0.000

 K2

11 (13.8%)

1 (1.1%)

0.001

 K5

1 (1.3%)

0 (0%)

0.276

 K20

2 (2.5%)

5 (5.3%)

0.354

 K54

2 (2.5%)

3 (3.2%)

0.795

 K57

6 (7.5%)

7 (7.4%)

0.974

 rmpA

65 (81.3%)

17 (17.9%)

0.000

 rmpA2

58 (72.5%)

19 (20.0%)

0.000

 magA

63 (78.8%)

58 (61.1%)

0.012

Basic demographics

 Age

83.2 ± 8.75

86.2 ± 8.04

0.020

 Male

77 (96.3%)

92 (96.8%)

0.837

Underlying diseases

 Pulmonary disease

73 (91.3%)

90 (94.7%)

0.363

 Diabetes

61 (76.3%)

52 (54.7%)

0.003

 Cardiovascular disease

40 (50.0%)

58 (61.1%)

0.142

 Cerebrovascular disease

9 (11.3%)

20 (21.1%)

0.082

 Cancer

21 (26.3%)

28 (29.5%)

0.636

 Surgery within 1 mo

6 (7.5%)

11 (11.6%)

0.364

 Digestive disease

25 (31.3%)

20 (21.1%)

0.124

Catheter

 Central intravenous catheter

50 (62.5%)

65 (68.4%)

0.411

 Urinary catheter

57 (71.3%)

79 (83.2%)

0.059

 Tracheal catheter

24 (30.0%)

33 (34.7%)

0.505

 Stomach tube

45 (56.3%)

71 (74.7%)

0.01

 Drainage tube

4 (5.0%)

1 (1.1%)

0.119

Infection type

 HAP

62 (77.5%)

68 (71.6%)

0.372

 Urinary infection

8 (10.0%)

20 (21.1%)

0.047

 Invasive infection

23 (28.8%)

6 (6.3%)

0.000

  Bacteraemia

5 (6.3%)

4 (4.2%)

0.543

  Liver abscess

8 (10.0%)

1 (1.1%)

0.008

  Other abscess

13 (16.3%)

3 (3.2%)

0.003

 Abdominal infection

18 (22.5%)

6 (6.3%)

0.002

 Sepsis

41 (51.3%)

40 (42.1%)

0.227

 Septic shock

9 (11.3%)

3 (3.2%)

0.035

Host response

 WBC

12.87 ± 4.24

10.34 ± 2.95

0.000

 NEU%

78.87 ± 7.60

74.23 ± 7.83

0.000

Nutrition status

 TP

65.14 ± 4.93

62.96 ± 4.71

0.003

 ALB

35.54 ± 2.75

34.45 ± 3.44

0.021

SOFA score

6.84 ± 2.81

4.93 ± 2.59

0.000

Infection occurred in ICU

13 (16.3%)

14 (14.7%)

0.783

Relapse

5 (6.3%)

5 (5.3%)

0.779

Mortality at 28 days

14 (17.5%)

17 (17.9%)

0.946

  1. Underline values indicate statistical significance
  2. TP total protein, ALB albumin; HAP hospital acquired pneumonia, WBC white blood cell count, ESBLs extended spectrum beta lactamases, NEU% percentage of neutrophils