Reading Journal Articles

Reading Journal Articles

Read the text called Reading Journal Articles in your book (also included in the following slides).
Answer the questions after each section of text.

📝A. Types of Research Articles 

Section 1:

In nutrition, understanding research is necessary for providing effective care. When a patient has a health concern, like high blood sugar, a nutritionist needs to evaluate their diet, lifestyle, and medical history. Medical research assists in finding the best ways to improve people's health. Research articles provide information that helps dieticians make decisions about patient care.

Multiple Choice

What is the main purpose of the reading text?

• To help researchers choose a type of research and structure their articles

• To introduce students to types of articles and the structure of journal articles

• To provide statistical analysis of research articles

• To compare different medical case studies

Section 2

In medical research, when a patient shows symptoms, like high blood sugar, the first thing a doctor or dietician does is to look at the patient’s diagnostic process. This means they try to understand the cause of the symptoms. After understanding the patient's condition, the dietician assesses the patient’s health status in relation to others, including their medical history, lifestyle, and current health.

One type of research article is called a Case Report (or a Case Study), which describes the treatment of a patient or a small group of patients. These reports can help record rare or unusual conditions, but they have a limitation. They cannot prove what works for all patients. For example, a case report might describe a patient with a rare vitamin deficiency and how their diet was adjusted to treat the deficiency.

Multiple Choice

What is one major drawback of a Case Study?

• It usually covers many years.

• It requires a lot of statistical analysis.

• There is not enough evidence to prove anything.

• It is difficult to recruit patients.

Multiple Choice

What is NOT true of Case Reports?

• establishes the side effects and adverse reactions to a specific medication

• considers the situation and condition of a single patient or small group

• investigates a specific condition or problem

• takes into account signs and symptoms, diagnoses, treatments, and results

Section 3

Another type of research is called a retrospective study, which looks at past data, such as patient records, to understand health trends. For instance, researchers could use hospital records from the last decade to examine how many patients with obesity developed type 2 diabetes. Unfortunately, these studies often do not have complete information about the patient's diet or lifestyle. This reduces the reliability of the results, making it harder to draw conclusions or prove significant results.

Multiple Choice

In a retrospective study, the researchers recruit patients and follow them over time to draw conclusions.

• False

• True

Section 4: Prospective Studies & Cohort Studies follow groups of people over time to see how certain factors affect their health outcomes. In Prospective Studies researchers identify a group of individuals and follow them forward in time, collecting data at different points. The goal is to see the factors associated with the prognosis of a disease or outcome. Cohort Studies, often called prospective studies, involve following a cohort, which is a group of people who share a common characteristic. Researchers track this cohort over time to see who develops a specific condition and the common factors shared. To illustrate, a prospective cohort study could follow a group of people in Oman for many years to see how their diet impacts the development of certain chronic diseases. Prospective and cohort studies require careful planning to ensure the groups are comparable and the results are accurate. The findings of such studies can have significant implications for public health recommendations. If a study is poorly designed, it can invalidate the conclusions drawn from it.

Multiple Choice

In a prospective study, the researchers analyze previously gathered data.

• False

• True

Section 5:In a case-control study, researchers compare people who have a certain condition, like iron-deficiency anemia, to those who do not. The goal is to identify factors, like diet, that could be causing the condition. To do this, the groups must be carefully matched so the results are meaningful. If participants match too closely, they might hide important factors, making the results less reliable.

In clinical trials, researchers test new treatments, like a new diet or supplement. A clinical trial might have two groups: one group receives the new treatment, while the other gets a placebo, a treatment that looks like the real one but has no active ingredients and is inert. This helps to ensure that any changes in health are caused by the treatment and not by chance. Some clinical trials use blinding, where neither the participants nor the researchers know who is receiving the treatment and who is receiving the placebo. This helps reduce bias and makes the results more trustworthy.

Multiple Choice

This study recruited 130 outpatients and inpatients with a diagnosis of Alzheimer's disease for a randomized, double blind, placebo-controlled study with a nutritional intervention/supplement.

• Clinical Trial

• Prospective Longitudinal Cohort Study

• Case Report

• Retrospective Study

Multiple Choice

A patient presented with inability to speak for 1 week and cerebral problems documented by tomography. It showed a rare syndrome potentially linked to a severe nutritional deficiency.

• Retrospective Study

• Prospective Longitudinal Cohort Study

• Case Report

• Clinical Trial

Multiple Choice

Study of link between long-term intake of dietary and supplemental calcium and death from all causes and cardiovascular disease over a median of 19 years in 61,433 women:

• Retrospective Study

• Prospective Longitudinal Cohort Study

• Case Report

• Clinical Trial

Multiple Choice

Study of patients with infections treated with specific diet (1 g IV q8h equivalent via feeding tube) before 2008, versus inpatients treated with 500 mg IV q6h equivalent after 2008:

• Retrospective Study

• Prospective Longitudinal Cohort Study

• Case Report

• Clinical Trial

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B. Finding Your Way Around a Journal Article

When reading a research article, it is important to know where to find key information. The abstract of the article provides a short summary of the study and its main findings. The introduction explains the background of the research and the aim of the study. 

The methods section tells you how the study was conducted, including how participants were recruited, and how data was gathered. To assess participants' health status, researchers often use measurements, like height, weight, waist circumference, and body fat percentage. Researchers collect data on participants' diets and measure results, using various methods of dietary intake assessment. This can include food frequency questionnaires, 24-hour recalls, or food diaries. These methods help researchers understand participants' usual food consumption. A study on the impact of traditional diets on cholesterol levels would require careful dietary intake assessment to determine the types and amounts of food consumed (Gibson, 2005). The methods section will also explain how researchers measured the effectiveness of the dietary intervention. This could include analyzing blood samples to determine nutrient bioavailability, which is how well the body can absorb and use nutrients from food. A study might examine the nutrient bioavailability of iron from dates when consumed with different dishes.
The results section shows the findings, often in the form of graphs or tables. Finally, the discussion or conclusion interprets the results, talks about the limitations of the study, and suggests future directions for research.

Multiple Choice

= interpreting findings, discussing limitations, and suggesting possible future research

• Discussion / Conclusion

• Results

• Methods

• Abstract

Multiple Choice

= explains how study was conducted, criteria for recruiting participants, and process for data gathering

•  Introduction

• Methods

• Results

• Discussion

Multiple Choice

= presents findings and objective data of the study (graphs, charts, tables, etc.)

• Abstract

• Introduction

• Methods

• Results

Multiple Choice

= context and background of research topic and aim or purpose of study

• Methods

• Introduction

• Results

• Discussion

Multiple Choice

= at beginning or before article, briefly summarizes study and main findings

• Introduction

• Methods

• Discussion

• Abstract

Multiple Choice

Reading journal articles is important for nutrition students because it helps them to:

• Stay updated with current research

• Improve writing skills

• Understand nutritional guidelines

• Memorize facts