S/N | Names of Sample Villages | Estimated Study Population | Estimated Average House-Hold Size | Estimated House-Hold Number | % of Sampled House-Hold | No. of Sampled Households | No. of Retrieved Questionnaires Properly Filled | % of Returned Questionnaire |
1 | Obololi | 1577 | 7 | 225 | 10 | 23 | 22 | 95.7 |
2 | Emete | 864 | 6 | 144 | 10 | 14 | 12 | 85.7 |
3 | Lobia | 1203 | 5 | 241 | 10 | 24 | 21 | 87.5 |
4 | Azama | 1306 | 6 | 218 | 10 | 22 | 20 | 90.9 |
| Total | 4952 | 6 (average) | 828 | - | 83 | 75 | 90.4 |