Characteristics of women receiving iron or placebo for unexplained fatigue in the absence of anaemia. Values are means (standard deviations)
| Iron group (n=71) | Placebo group (n=65) | |
|---|---|---|
| Age (years) | 36.1 (9.9) | 34.6 (11.5) |
| Serum ferritin concentration (μg/l) | 30.4 (31) | 29.2 (28) |
| Haemoglobin concentration (g/l) | 135.4 (9.5) | 136.5 (10.4) |
| Fatigue scale (1-10 points) * | 6.4 (1.6) | 6.5 (1.5) |
| Multi-item fatigue questionnaire † | 18.9 (8.9) | 20.7 (8.1) |
| Depressive mood † | 8.7 (7.5) | 8.2 (6.5) |
| Anxiety † | 7.8 (6.8) | 7.5 (6.5) |