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Table 1 Characteristics of 879 asplenic patients

From: Pneumococcal and influenza immunization in asplenic persons: a retrospective population-based cohort study 1990-2002

Characteristic Total Pre-existing hematologic diagnosis for which splenectomy could be considered No pre-existing hematologic diagnosis
    ITP Hodgkins disease Non-Hodgkins lymphoma Hemolytic anemia Hypersplenism   
  n = 879 n = 196 n = 9 n = 89 n = 55 n = 78 n = 452
  (100%) (22.3%) (1.0%) (10.1%) (6.3%) (8.9%) (51.4%)
  n % n % n % n % n % n % n %
Age at splenectomy               
   ≤ 18 years 65 7.4 12 6.1    19 34.6 11 14.1 21 4.7
   > 18 years 814 92.6 184 93.9      36 65.4 67 85.9 431 95.3
Gender               
   Male 471 53.6 79 40.3   54 60.7 27 49.1 41 52.6 265 58.6
   Female 408 46.4 117 56.7    35 39.3 28 50.9 37 47.4 187 41.4
Death               
   Yes 230 26.2 39 19.9   28 31.5 13 23.6 12 15.4 135 29.9
   No 649 73.8 157 80.1    61 68.5 42 76.4 66 84.6 317 70.1
Any vaccination for influenza               
   Yes 467 53.1 123 62.8   49 55.1 39 70.9 41 52.6 210 46.5
   No 412 46.9 73 37.2    40 44.9 16 29.1 37 47.4 242 53.5
Any vaccination for S.pneumoniae               
   Yes 145 16.5 42 21.4   12 13.5 16 29.1 21 26.9 53 11.7
   No 734 83.5 154 78.6    77 86.5 39 70.9 57 73.1 399 88.3
  1. ITP = immune thrombocytopenic purpura
  2. † Numbers suppressed due to cell size < 5