Table 1: Proportionate samples for each health area.
| Health area | Population of mothers with a child less than one-year-old (a) | Sample of mothers with a child less than one-year-old (a*f) | Number of clusters selected (a*f)/30 |
| Bafia | 712 | 114 | 4 |
| Malende | 801 | 129 | 4 |
| Muyuka | 1158 | 187 | 6 |
| Total | 2671 | 430 | 14 |