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Social & Preventive Medicine General c0819626

Estimation of percentage of children immunized in community as per WHO is to be done by:

A
Multistage random sampling
B
Cluster random
C
Systematic random sampling
D
All of the above
High-Yield Explanation
WHO recommends cluster random sampling (CRS) to estimate the percentage of children immunized in the community, paicularly in developing nations. Their recommended strategy is 30x7 sampling. Ref: Medical biostatistics, 1st edition pg: 201

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