Mathematics, 08.04.2021 23:00 willoughbysierra

During 1997, a researcher selected a random sample of women who lived in a particular county in 1992. Examining the medical records, the researcher found that of 674 women who were diagnosed with breast cancer in 1992, 88% of the Caucasian women and 83% of the African American women were still alive in 1997. Determine whether this investigative study is retrospective or prospective.

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During 1997, a researcher selected a random sample of women who lived in a particular county in 1992...