11. In 1940, 2,000 women working in a factory were recruited into a study. Half of thewomen worked in manufacturing and half in administrative offices. The incidence ofbone cancer through 1970 among the 1,000 women working in manufacturing wascompared with that of 1,000 women working in administrative offices. Thirty of thewomen in manufacturing developed bone cancer as compared to 9 of the women inadministrative offices. This study is an example of aa. randomized controlled trialb. case-control studyc. cohort studyd. crossover trial

Answered: 11. In 1940, 2,000 women working in a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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11. In 1940, 2,000 women working in a factory were recruited into a study. Half of the
women worked in manufacturing and half in administrative offices. The incidence of
bone cancer through 1970 among the 1,000 women working in manufacturing was
compared with that of 1,000 women working in administrative offices. Thirty of the
women in manufacturing developed bone cancer as compared to 9 of the women in
administrative offices. This study is an example of a
a. randomized controlled trial
b. case-control study
c. cohort study
d. crossover trial

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Cohort studies are observational studies, which include repeated observations of the same variables that follow the same sample over time. It is a type of longitudinal study.

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