Social Studies, 04.11.2019 23:31 giavanleer14
Residents of three villages with three different types of water supply were asked to participate in a survey to identify cholera carriers. because several cholera deaths had occurred recently, virtually everyone present at the time underwent examination. the proportion of residents in each village who were carriers was computed and compared. what is the proper classification for this study? a. cross-sectional studyb. case-control studyc. prospective cohort studyd. retrospective cohort studye. experimental study
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Social Studies, 22.06.2019 04:30, mariaaaaa69
One of the great societal changes brought about by industrialization in europe was a. slavery. b. urbanization. c. ruralization. d. democracy.
Answers: 2
Social Studies, 23.06.2019 09:00, brittany7436
What are the four classes of fire according to nfpa?
Answers: 1
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