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Table 1 Main demographic and clinical characteristics of children cohorts

From: Detection of Malawi polyomavirus sequences in secondary lymphoid tissues from Italian healthy children: a transient site of infection

Healthy subjects No. 200
Group 1 No. 100
 Age in years, mean 5.4
  Age categories, number (percentage)  
  1–5 y 59 (59 %)
  6–15 y 41 (41 %)
  Female, number (percentage) 43 (43 %)
 Diagnosis, number (percentage)  
  Tonsils/ Adenoids hypertrophy 100 (100 %)
Group 2a No. 100
  Age in years, mean 1.9
  Age categories, number (percentage)  
  0–4 y 100 (100 %)
  Female, number (percentage) 70 (70 %)
 Diagnosis, number (percentage)  
  Enterovirus 10 (10 %)
  Norovirus 20 (20 %)
Autoimmune children No. 40
  Age in years, mean 8.5
  Age categories, number (percentage)  
  1–5 y 11 (27.5 %)
  6–15 y 29 (72.5 %)
  Female, number (percentage) 23 (57.5 %)
  Diagnosis, number (percentage)  
  Crohn Disease 13 (32.5 %)
  Juvenile Rheumatoid Arthritis (JRA) 20 (50.0 %)
  Ulcerative Rectocolitis 7 (17.5 %)
  1. aGastrointestinal disorder children