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Table 1 Baseline characteristics

From: Humoral and cellular immune responses after influenza vaccination in patients with chronic fatigue syndrome

  Chronic fatigue syndrome patients (n=20) Healthy controls (n=20) p-value
Gender
 Male 7 (35) 7 (35) 1.000
 Female 13 (65) 13 (65)  
Age (years)
 Mean 35.0±10.0 34.4±9.2 0.857
CIS-fatigue 48.15±5.48 15.80±3.62 <0.001
Hemoglobin (mmol/l) 8.6±0.6 8.4±0.7 0.235
Mean absolute leukocyte count (*10 9 /l) 7.2±1.9 6.9±1.9 0.654
Mean neutrophil count (% of total) 60.2±8.7 59.9±8.7 0.928
Mean lymphocyte count (% of total) 29.8±7.6 29.2±7.1 0.797
Mean monocyte count (% of total) 5.7±1.5 5.2±1.4 0.332
Influenza vaccination prior to 2010
 Yes 5 (25) 5 (25) 1.000
 No 15 (75) 15 (75)  
  1. Data are presented as mean ± standard deviation or as absolute numbers with percentages in brackets.