Question

compare and control research studies and the quality management

Answer 1

Comparison of different types of Research Design

1. Meta-analysis – In this study method the focus is to thoroughly review a literature and then summaries the clinical findings in order to validate the studies. In this method, data for an individual is derived from a large group.

Advantage: Include validation of small evidences, evaluate critic documents and literature, and provide a structured review of literature

Disadvantages: Takes a lot of time, difficult to combine studies, subject may bias from original studies

2. Randomized controlled trial (RCT) – The participants are randomized and the design is manipulated through therapeutic intervention.

Advantages: No biasing as random participants are chosen, it provides opportunity to compare the result with control group, high efficacy and strong evidence of causality

Disadvantages: Studies involving ethical dilemmas cannot be carried on, takes time longer than usual, andis expensive though it has sound methodology.

3. Cohort study – A defines group of people is chosen and the data is collected from this group through interview etc.

Advantages: people are observed in natural setting with high chances of possible associations of results

Dis advantages: No randomization and hence no bias. It takes long time and is expensive

4. Case control study –

Advantages – it is fast and cheap and is used to determine rare disease.

Disadvnatages: No randomization, chances of choosing control group