as an epidemiologist you are going to investigate the effect of lead exposure in a Baltimore neighborhood and the incidence of lead poisining and related difficulties in early childhood. You start with a cohort of 400 babies born in 2015. At baseline, none of them have any symptoms of lead poisining, but after taking envirnomental samples from their homes you find that 250 have lead paint exposure and 150 of them do not You follow them for ten years and keep track of incident cases of lead poisining based on blood samples. In 2025 you end your study and report the following: 100 of the children previously exposed to lead paint in 2015 have lead poisining and 25 of the children that were not exposed in 2015 have lead poisining. Calculate the cumulative incidence for the exposed group and the unexposed group. Calculate the relative risk between lead paint exposure and lead poisining.
as an epidemiologist you are going to investigate the effect of lead exposure in a Baltimore neighborhood and the incidence of lead poisining and related difficulties in early childhood. You start with a cohort of 400 babies born in 2015. At baseline, none of them have any symptoms of lead poisining, but after taking envirnomental samples from their homes you find that 250 have lead paint exposure and 150 of them do not You follow them for ten years and keep track of incident cases of lead poisining based on blood samples. In 2025 you end your study and report the following: 100 of the children previously exposed to lead paint in 2015 have lead poisining and 25 of the children that were not exposed in 2015 have lead poisining. Calculate the cumulative incidence for the exposed group and the unexposed group. Calculate the relative risk between lead paint exposure and lead poisining.
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