Understanding Jessica’s DNP Project: Study Design and Purpose

QUESTION

For her DNP project, Jessica decides to pull 25 medical records of healthcare workers who had been diagnosed with hepatitis B and 25 of healthcare workers who were free of hepatitis B to evaluate how many had experienced a known needlestick. Her study was an example of a: 1. Case control study 2. Case series study 3. Cohort study 4. Randomized controlled study

ANSWER

Understanding Jessica’s DNP Project: Study Design and Purpose

Introduction

Jessica’s Doctor of Nursing Practice (DNP) project involves investigating the association between hepatitis B infection and needlestick injuries among healthcare workers. To determine the study design Jessica used and its purpose, we will delve into the characteristics and objectives of her research.

Study Design

Jessica’s DNP project is an example of a **”Case Control Study” (Option 1)**.

Purpose and Characteristics

A Case Control Study:
1. Comparative Nature: It involves comparing two groups – in Jessica’s case, healthcare workers with hepatitis B (cases) and healthcare workers without hepatitis B (controls).
2. Retrospective: Case control studies are typically retrospective, meaning they look back at past data and medical records to identify associations.
3. Outcome-Oriented: The primary goal is to determine if a specific exposure (in this case, needlestick injuries) is associated with a particular outcome (hepatitis B infection).
4. Efficiency: It is an efficient way to investigate rare outcomes (hepatitis B) by selecting a smaller but relevant sample size (25 cases and 25 controls in Jessica’s study).
5. Comparative Risk Assessment; It allows for the calculation of odds ratios or relative risk, providing insights into the strength of the association between exposure and outcome.

In Jessica’s study, she aims to compare the history of needlestick injuries between healthcare workers with hepatitis B and those without the infection. This design allows her to identify whether needlestick injuries are more common among healthcare workers with hepatitis B, which can provide valuable insights into infection prevention measures in healthcare settings.

Explanation of Other Study Types

1. Case Series Study: A case series study involves the collection and analysis of data from a group of patients with similar characteristics or conditions. It does not include a control group for comparison, making it different from Jessica’s study.

2. Cohort Study: A cohort study involves the selection of two or more groups (cohorts) and follows them over time to assess outcomes. Jessica’s study is cross-sectional, comparing cases and controls at a single point in time, rather than following them over time.

3. Randomized Controlled Study: Randomized controlled trials (RCTs) are experimental studies that involve random allocation of participants into intervention and control groups. Jessica’s study is observational, not experimental, as she is not assigning exposures but rather comparing groups based on their hepatitis B status and needlestick history.

Conclusion

Jessica’s DNP project, which examines the association between hepatitis B infection and needlestick injuries among healthcare workers, represents a Case Control Study. This design allows her to assess the relationship between exposure and outcome efficiently and is well-suited to her research objectives. By comparing healthcare workers with and without hepatitis B, Jessica aims to contribute valuable insights into infection prevention strategies in healthcare settings.