Understanding basics of biostatistics

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Reference no: EM1313668

a) In explaining their findings, the authors have ignored a major threat to the validity of their estimates of exposure. Explain and discuss this error.

b)Specify the alternative study design should overcome this problem and why?

c) Rate the study's internal validity; low, medium or high. Explain this systematically in relation to the data and other evidence presented in this paper.

d) To whom may the results be generalised? Describe your answer briefly.

Reference no: EM1313668

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