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Post a reply: Cluster or SRS

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From Alemu Gemechu Abbo Hi, I am about to begin data collection on time of initiation of complementary feeding. The sampling method I have chosen is cluster sampling however it desires a large sample size compared to SRS method that made me frustrated because of shortage of financial resource. Here what I wan to discuss is to recommend me if I can use households already registered & kept in the health post as what we call health development army. It is a system in whach all households are registered by 5 to 1 system. Is it acceptable if I use this existing record as a sample frame & then employ simple random sampling (SRS) method to make the sample size smaller? As another alternative can I change the design from community based to health facility based? thanks,
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