Table 1 Baseline characteristics
| Â | 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) |  |