Basics of epideomology and biostatistics

1) The following data is related to an unusual episode when the SS Titanic sank in the early twentieth century.

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Explain the epidemiological attributes of this episode.

2) In which special circumstances can cross-sectional surveys be utilized to test the hypotheses? In your answer explain briefly the characteristics of the cross-sectional study.

3) Case-control studies can be of a higher quality rather than a prospective cohort study. Describe why you agree or disagree with this statement.

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