Table 25.
Impact on plasma zinc concentration of complementary feeding interventions
| Author | Site | Target group | Study groups | n | Zn dose (mg) | Mean plasma Zn (µg dL−1) | % low (<70 µg dL−1) |
|---|---|---|---|---|---|---|---|
| Efficacy trials | |||||||
| Lartey et al. (1999) | Ghana | 12 months | Fortified maize/legume | 30 | 6 | 94.2 ± (22.2) | 10.0 |
| Maize/legume/fish | 31 | 0 | 104.0 ± (18.3) | 6.5 | |||
| Maize/fish | 29 | 0 | 102.0 ± (22.2) | 6.9 | |||
| Maize/legume | 31 | 0 | 101.4 ± (28.1) | 3.2 | |||
| Faber et al. (2005) | South Africa | 12–18 months | Fortified maize | 140 | 3 | 69.3 ± (13.7) | NA |
| Unfortified maize | 132 | 0 | 69.3 ± (11.8) | NA | |||
| Smuts et al. (2005) | South Africa | 12–18 months | Daily MMN | 49 | 10 mg day−1 | +6.8 ± (2.2)* | NA |
| Weekly MMN | 46 | 20 mg week−1 | +3.7 ± (2.4) | NA | |||
| Daily iron | 49 | 0 | +0.5 ± (2.2) | NA | |||
| Placebo | 50 | 0 | −2.0 ± (2.8) (change from baseline) | NA | |||
| Oelofse et al. (2003) | South Africa | 12 months | Fortified food | 16 | 5.6 | 85.0 ± (9) | NA |
| Control | 14 | 0 | 73.6 ± (12) | NA | |||
| Programmes | |||||||
| Lutter et al. (2006) | Ecuador | 20–26 months | Programme | 74 | 6.5 mg day−1 | 89.0 ± (26.7) | 23.0 |
| Control | 80 | 0 | 86.3 ± (22.5) | 17.7 | |||
MMN, multiple micronutrients; NA, not available. *Means are significantly different from control (P < 0.05).