$1.00 A researcher wants to determine the amou
A researcher wants to determine the amount of wieght loss for patients recieving a newly marketed natural supplement' Weiht is assessed at 3,6,and 9 month intervals. A sample of patients for one busy primary care practice is used as the comparison group. what is the research design and its variables?
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- Posted on May. 23, 2012 at 12:56:09AM
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