An epidemiologist wants to determine the association between birth weight with current weight among young adults.

An epidemiologist wants to determine the association between birth weight with current weight among young adults. The epidemiologist recruits a group of 100 18-year-olds for the study. The epidemiologist will obtain measures of birth weight from the participant’s birth certificates and will directly measure current weight during in-person study visits. They would like to get this information relatively quickly so they can include the results in one of their upcoming grant proposals, which is in 6 months. a. (1 point) What is the most appropriate study design for this research question and situation? i. Case report/case series ii. Cross-sectional study using ecologic data (ecologic study) iii. Cross-sectional study iv. Case-control study v. Prospective cohort study vi. Retrospective cohort study vii. Randomized trial b. (2 points) Justify your answer from part a.