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Description of study sample by year.
| Villages n (%) | Households n (%) | Maize samples n (%) | ||||
|---|---|---|---|---|---|---|
| Year | ||||||
| 2005 | 36 (36) | 289 (41)a | 298 (42) | |||
| 2006 | 38 (38) | 160 (23) | 165 (23) | |||
| 2007 | 25 (25) | 256 (36) | 253 (35) | |||
| Total | 99 (100) | 705 (100) | 716 (100) | |||
| aIn 2005, the total number of households includes 260 households randomly selected and 29 households of case–patients identified by hospital reporting. | ||||||
