Using it's concept, it is found that the prevalence of frequent multivitamin use is of 0.4523 = 45.23%.
The prevalence of a sample is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, 588 out of 1300 women reported taking a multivitamin at least 4 times a week during the month before pregnant, hence the prevalence is given by:
p = 588/1300 = 0.4523 = 45.23%.
More can be learned about prevalence at https://brainly.com/question/14398287
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