This paper is to critique a study conducted on the metabolic control of adults with type 2 diabetes mellitus. This one year study examines the impact of education and counseling on the metabolic control specifically in the Mexican population.
Burns and Grove (2009) describe sampling as “a process of selecting subjects, events, behavior, or elements for participation in a study”. In this study, the researchers obtained a sample of the population to be studied by using the self-selection method. The participants were selected from a specific geographic area and adults affected by DMT 2 in ambulatory care setting agreed to be a part of the study after a door to door calling was conducted to identify the subjects. Creatinine level was tested on the participants who agreed to participate due to the possibility of renal damage (Rule et al, 2004 as cited in Gallegos, ovalle-Berumen, & Gomez-Meza, 2006). The experimental group had 29 adults while the comparison had 28. Only 25 adults completed the entire study in the experimental group while a number of 20 participants made it through in the comparison group. There was no explanation given in the study for the participants who did not complete the study.
The research used convenient sampling in both groups nevertheless assignment of the subjects to each group was random. The sample size does not truly represent the population in the study. There were three different settings utilized in this study. Educational activities took place in nursing facilities for the experimental group and the counselors were able to go the participants’ homes or talk to them via telephone. For the comparison group, the researchers relied on the participants monthly visits with their primary care provider to check blood glucose level to collect data for the study. In this study, the population was clearly identified as well as the inclusion and exclusion criteria. A nonprobability sampling was utilized. The creatinine level was checked before the participant took part in the study. The study participants had a similar socioeconomic status, same genetic homogeneity, and several years of formal education.
The Research and Ethics Committee from the school nursing had a chance to analyze and approve the research proposal before the research begins to contact the participants. The researchers informed the participants of the contents and obtained consent from each participant. Participants were given the guarantee that confidentiality and the concept of beneficence would be respected. It was made clear to the participants that they could withdraw from the study at any time. Participation in the research was also voluntary.
Measurements were taken at regular intervals on 5 different occasions. Since HbA1C is generally checked every 3 months the time interval was 3 months and the study went on for one full year which is equal to 12 months. Measurements taken include the anthropometrics and clinical as well four...