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Table 4 Relation of K. pneumonia e serotype to clinical characteristics

From: Bacteremic community-acquired pneumonia due to Klebsiella pneumoniae: Clinical and microbiological characteristics in Taiwan, 2001-2008

Characteristic

Serotype K1,

n = 7

No. (%)

Serotype K2,

n = 19

No. (%)

Serotype non-K1/K2,

n = 23

No. (%)

p-valuea

Age > 65 years

5 (71.4)

14 (73.7)

18 (78.3)

0.674

Male sex

4 (57.1)

15 (78.9)

20 (87)

0.229

Underlying disease or risk factor

    

   Malignancy

1 (14.3)

5 (26.3)

8 (34.8)

0.365

   Diabetes mellitus

5 (71.4)

6 (31.6)

6 (26.1)

0.234

   Liver cirrhosis

0 (0)

2 (10.5)

2 (8.7)

1.000

   Chronic kidney disease stage≧4

1 (14.3)

5 (26.3)

7 (30.4)

0.560

   Chronic lung diseases

2 (28.6)

10 (52.6)

11 (47.8)

0.907

   Neurologic disorders

3 (42.9)

2 (10.5)

7 (30.4)

0.363

   Autoimmune disease

0 (0)

2 (10.5)

1 (4.3)

1.000

   Alcoholism

1 (14.3)

2 (10.5)

2 (8.7)

1.000

CXR--bilateral involvement

6 (85.7)

12 (63.2)

14 (60.9)

0.539

Leucopenia b

1 (14.3)

3 (15.8)

2 (8.7)

0.671

Concurrent lung abscess

0 (0)

2 (10.5)

1 (4.3)

1.000

Initial presentation with septic shock

4 (57.1)

10 (52.6)

11 (47.8)

0.674

Initial presentation with respiratory failure

4 (57.1)

12 (63.2)

14 (60.9)

0.962

APACHE-II score>25

5 (71.4)

15 (78.9)

15 (65.2)

0.365

PSI Risk Class V

7 (100)

17 (89.5)

20 (87)

0.655

ICU admission

3 (42.9)

12 (63.2)

13 (56.5)

0.934

Early deaths ≦ 48 hrs

3 (42.9)

7 (36.8)

8 (34.8)

0.790

In-hospital death

4 (57.1)

11 (57.9)

12 (52.2)

0.698

  1. Values given as No. of patients (%).a Serotype K1/K2 vs. Serotype non-K1/K2.
  2. b Leucopenia was defined as leucocyte count less than 4000 × 103/μL. APACHE, Acute Physiologic and Chronic Health Evaluation; PSI, Pneumonia Severity Index, ICU: intensive care unit.