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Table 3 Characteristics of CFS and non-CFS patients with RRTI

From: Polymorphism in COMT is associated with IgG3 subclass level and susceptibility to infection in patients with chronic fatigue syndrome

  CFS w/o RRTI (n = 40) CFS with RRTI (n = 34) non-CFS RRTI (n = 68)
Age (years) 39 ± 10 42 ± 10 38 ± 13
m/f 37/63 % 35/65 % 29/71 %
Bell score 40 ± 10 30 ± 10 n.a.
RRTI (n)   34 (46 %) 68 (100 %)
Lower RRTI (n)   5 (15 %) 30 (44 %)
 Pneumonia   9 % 19 %
 Bronchitis   15 % 31 %
Upper RRTI (n)   34 (100 %) 54 (79 %)
 Sinusitis   79 % 57 %
 Pharyngitis   15 % 16 %
 Tonsilitis   6 % 10 %
  1. na not applicable.