Baseline characteristics of children randomised to weekly chloroquine and weekly placebo in 2007 and 2008, pooled
| Parameter | Chloroquine group N=50 | Placebo group N=46 |
|---|---|---|
| Male sex (%) | 28 (56.0) | 24 (52.2) |
| Age in months, mean (SD) | 41.9 (18.1) | 38.7 (17.8) |
| Height-for-age Z scores, mean (SD) | −1.19 (0.91) | −0.94 (1.20) |
| Weight-for-age Z scores, mean (SD) | −1.44 (0.95) | −1.35 (0.87) |
| Weight-for-height Z scores, mean (SD) | −0.94 (0.90) | −0.96 (0.79) |
| BMI (kg/m2), mean (SD) | 14.7 (1.4) | 14.7 (1.3) |
| Parasite density at recruitment (day 0), geometric mean, (95% CI) | 47 783 (31 617 to 71 120) | 32 496 (21 910 to −47 507) |
| Hb (g/L) at recruitment (day 0), mean (SD) | 103.9 (14.2) | 101.5 (14.8) |
| Hb (g/L) at baseline (day 3), mean (SD) | 93.4 (9.6) | 93.7 (10.2) |
| Iron deficient* at baseline (day 3) (%) | 23 (46) | 23 (50) |
*Iron deficiency was defined as zinc protoporphyrin ≥61 μmol/mol of Hb, mean cell volume ≤73 fL and mean cell haemoglobin ≤25 pg.