Table 5.
Aflatoxin contamination levels by crop in all three districts (baseline vs. Eend-line) (n = 696).
| Indicator | Groundnut | Maize | Sorghum | |||
|---|---|---|---|---|---|---|
| Baseline | End-line | Baseline | End-line | Baseline | End-line | |
| Number of samples tested (n) | 589 | 386 | 114 | 268 | 79 | 42 |
| % of samples that tested negative for AFB1 | 31.4 | 2.8 | 49.1 | 2.9 | 30.3 | 4.7 |
| % of samples that tested positive and with < 20 ppb of AFB1 | 55.4 | 70.4 | 55.1 | 65.0 | 49.0 | 62.5 |
| % of samples with > 20 ppb of AFB1 | 39.6 | 29.6 | 44.8 | 31.9 | 50.9 | 32.5 |
| Median AFB1 (ppb) | 1.97 | 7.92 | 0.00 | 7.22 | 0.09 | 10.42 |
| Mean AFB1 (ppb) | 146.6 | 56.6 | 25.8 | 43.8 | 119.5 | 103.7 |
| Standard Deviation AFB1 (ppb) | 1929.9 | 173.3 | 142.0 | 144.3 | 245.4 | 296.3 |
| Percentage point reduction in contamination level > 20 ppb | 10.0 | 12.9 | 18.4 | |||
| p-value for Chi square (χ2) test | 0.886 | 0.045 | 0.022 | |||