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5. ANNEXES<br />

Annex 5.1: Sample size<br />

z 2<br />

(P) (1-P) (f)<br />

e<br />

2<br />

Where:<br />

z= confidence interval (95%)<br />

P= P-Value which assumed some security correlation within the cluster (0.3)<br />

f= is the sample design effect (1.5)<br />

e= the margin of error to be attained (+ or – 5%)<br />

36

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