Identify the Type of Observational Study (Cross-Sectional, Retrospective, Prospective)

question 148

Essay

Identify the type of observational study (cross-sectional, retrospective, prospective).
-In a clinical trial for a new headache medication, participants are randomly assigned to a treatment group or a
placebo group. They do not know whether they are receiving the medication or a placebo. However the doctors
administering the medication and evaluating the results do know which participants are receiving the
medication. This experiment is blind but not double blind. Explain what this means and why the absence of
double blinding could cause a problem.

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Definitions:

Machine-Hours

The quantity of operational time, captured in hours, that industrial equipment is actively utilized for manufacturing purposes.

Departmental Overhead Rates

The method of allocating overhead costs to specific departments within a company based on predetermined rates.

Manufacturing Cost

The total cost related to producing goods, including materials, labor, and overhead expenses.

Machine-Hours

A measure of production volume or activity based on the number of hours machines are operated within a specified period.