All are disadvantages of Coho study except
**Core Concept**
The **cohort study** is a type of observational study in epidemiology where a group of people sharing similar characteristics are followed over time to assess the development of a specific outcome. This study design is used to investigate the causes of diseases and to examine the effects of risk factors.
**Why the Correct Answer is Right**
Since the correct answer is not provided, I will explain the general advantages of cohort studies. Cohort studies allow for the direct estimation of **incidence rates** and **relative risks**, providing strong evidence for causality. They can also examine multiple outcomes from a single exposure, making them efficient for studying diseases with multiple risk factors.
**Why Each Wrong Option is Incorrect**
**Option A:**
**Option B:**
**Option C:**
**Option D:**
Given the lack of specific options, I will provide general information. Typically, disadvantages of cohort studies include **confounding variables**, **selection bias**, and **loss to follow-up**.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that cohort studies can be **prospective** or **retrospective**, each with its own set of advantages and disadvantages. Prospective cohort studies are less prone to **recall bias** but may suffer from **loss to follow-up**.
**Correct Answer:** Not provided.