4) Exposure to metals has been implicated in the pathogenesis of Parkinson disea

Question

4) Exposure to metals has been implicated in the pathogenesis of Parkinson disease (PD). Researchers sought to examine in a large study of female nurses whether exposure to airborne metals was associated with risk of PD. Researchers linked the U.S. Environmental Protection Agency (EPA)'s Air Toxics tract-level data with the Nurses' Health Study. Researchers tracked the nurses from 1990 through 2008 and identified 425 incident cases of PD. Researchers examined the association of risk of PD with the following metals that were part of the first U.S. EPA collections in 1990, 1996, and 1999: arsenic, antimony, cadmium, chromium, lead, manganese, mercury, and nickel. What type of study is this? Explain. 5) Health Education researchers assessed whether community health workers (CHWs) could improve glycemic control among Mexican Americans with diabetes. Researchers recruited 144 Mexican Americans with type 2 diabetes between January 2006 and September 2008 Participants were randomly assigned to either a CHW intervention, delivering self-management training through 36 home visits over 2 years, or a bilingual control newsletter delivering the same information on the same schedule. What type of study is this? Explain

Explanation / Answer

Answer to question# 4)

This is observational study. In this there is no control implement or manipulations made in the existing environment. Rather data from the past has been linked up and analyzed in order to draw conclusions. This type of study is called observational study, where only the normal and natural phenomenon is observed and studied

.

Answer to question# 5)

This is experimental study, where a sample is selected and divided into two groups. One can be considered as experimental group and the other one can be considered as control group that receives the newspaper. Like this the sample is subjected to some sort of experiment and the recordings for the two different groups are analyzed to trace the impact of the treatment on the subjects

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.