john_foreman
Forum Newbie
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How can investigator bias be avoided when selecting sample for a prospective controlled clical investigation?
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| Dr_Cosme
Forum Junior
Topics: 7
Posts: 58
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there are different methods which you can use to select sample and prevent enbias:
RANDOM: In a population of 100 people, you want to have a sample of 10 people which represents the general populations, you then put them in a homogeneous group (Example, Black and white) and you select five of each group.
SYSTEMATIC: you select every 5th patient that comes in the clinic
CLUSTER: to select 100 students from the top universities, you look for the top 10 universities and select randomly 10 students.
hope this helps.
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"100% Dominican 2 U"
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| Ig F
Forum Elite
Topics: 3
Posts: 342
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i guess cluster is the most appropriate......
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i m not perfect but i wanna get close to it......
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