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. 2023 Apr 13;22:124. doi: 10.1186/s12936-023-04509-2

Table 1.

Probability proportional to size of health area

Health area (Health facility) Total population
 ≤ 5 years
Proportion Proportionate sample
Buea Road (Buea regional hospital) 6,588 0.382 149
Molyko (Solidarity hospital) 2,676 0.156 61
Muea (Muea Sub-divisional hospital) 7,993 0.462 180
Total 17,257 01 390