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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 stage4 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.