Research Article Analysis: Sampling and Bias Worksheet

Research Article Analysis: Sampling and Bias Worksheet

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Research Article Analysis: Sampling and Bias Worksheet

Complete each of the following items.

1. Select an article in your area of interest. Provide a citation for the article.

< Zhang, Y., & Chu, L. (2018). Effectiveness of systematic health education model for type 2 diabetes patients. International Journal of Endocrinology, 2018(9349):1-9, doi: 10.1155/2018/6530607. Retrieved May 27, 2019, from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6083492/.>

2. Identify the sample size, method of recruitment, and type of setting in which the recruitment occurred.

<Zhang and Chu (2018) carried out a randomized study and a control group in Chinese patients living with type 2 diabetes mellitus (T2DM) in Nanjin. Investigators enrolled 998 eligible patients and randomized 498 patients to systematic health education model and 500 patients to conventional model. .>

3. Identify the inclusion and exclusion criteria for subjects and rationale given by the authors for their choices.

<patients in the control group were randomized to conventional model of education while the study group were randomized predicated on aspects such as monthly evaluation, lifestyle modifications, and individualized follow-ups. Inclusion criteria included females or males between 18 and 65 years, at least a single treatment before the study, and a diagnosis of T2DM. Exclusion criteria in the study were patients with gestational diabetes and those with type 1 diabetes mellitus, patients who had declined to be included in the study, those with less than 2 years life expectancy, and those who participated in trials>

4. Identify any potential bias the sampling methods might have introduced to the study.

<The non-blind trial carried out by the researchers was a potential of bias in the study. In addition, the use of mobile devices during patient recruitment limited the older population because most of the participants were young patients>

5. Write a 150- to 250-word response to the following question: To what population does the author suggest the findings are generalizable? Do you agree? Why or why not?

<During patient enrollment, the authors used mobile devices, and this had the potential to limit generalizability. Most of the recruited patients were young because of such limitation of older adults using mobile devices.>

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Response

Patients meeting the inclusion criteria were randomized from outpatient and inpatient wards. Inclusion criteria included females or males between 18 and 65 years, at least a single treatment before the study, and a diagnosis of type 2 diabetes mellitus (T2DM) (Zhang & Chu, 2018). Exclusion criteria in the study were patients with gestational diabetes and those with type 1 diabetes mellitus, patients who had declined to be included in the study, those with less than 2 years life expectancy, and those who participated in trials. Zhang and Chu (2018) carried out a randomized study and included a control group of Chinese patients living with T2DM in Nanjin. 998 eligible patients were randomized with 498 patients in the systematic health education group and 500 patients to conventional group. The outcomes of the study were measured by body mass index (BMI), glycated hemoglobin A1c (Hb1c), blood pressure, and lipids during the period of follow-ups that lasted 2 years. The authors found that the group randomized to systematic health education model showed a significant variation in systolic blood pressure (SBP), LDL cholesterol, and HbA1c (P<0.05) (Zhang & Chu, 2018). However, during patient enrollment, the Zhang and Chu (2018) used mobile devices, and this had the potential to limit generalizability. Most of the recruited patients were young because of such limitation of older adults using mobile devices. While the systematic health education model was shown to be successful in improving patient outcomes, the study does not reflect the results in general population that includes both young and older patients.

References

Zhang, Y., & Chu, L. (2018). Effectiveness of systematic health education model for type 2 diabetes patients. International Journal of Endocrinology, 2018(9349):1-9, doi: 10.1155/2018/6530607. Retrieved May 27, 2019, from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6083492/.>