. Were the criteria for inclusion in the sample clearly defined? Yes/No/Unclear
Evidence: Wang et al (2016) stated that the criteria of inclusion in the sample were clearly stated as people above the age of 50 with desired evidence were only to be included in the research. In this particular case study, a total of 3277 inhabitants over the age of 50 were eligible for this study, but 1563 individuals were disbarred since they ceased to provide the required anthropometric data, such as height, mass, waist measurement, waist-hip ratio, blood pressure systolic and diastolic fasting glucose metabolism, triglyceride, and cholesterol levels, in addition to details about their medication management use. Therefore, the final data included 1714 people.
2.Were the study subjects and the setting described in detail?
Evidence: The subject of the study was clearly defined. The aim of the study was to analyze how geographic position and racial composition influence the correlation between type 2 diabetes mellitus (T2DM) and obesity. Wang et al (2016) mentioned that the objective was to further emphasize and investigate the proportion of T2DM and the percentage of individuals without a diagnosis. In addition, to examine the correlations between various obesity indices and T2DM among middle-aged and elderly individuals from six areas in Jinan, China.
The setting seemed to be unclear. It is only stated in the article that the study participants were taken in a random way from blocks within each of Jinan, China’s six communities in a cross-sectional study done in 2011 and 2012.
3.Was the exposure measured in a valid and reliable way?
Evidence: Yes the exposure was measured invalid and in a proper way. The participants’ age, gender, tobacco consumption status, present alcohol intake, and daily exercise frequency were all inquired about on a questionnaire by trained interviewers. All participants had a comprehensive physical assessment that included standard anthropometric, medical, and laboratory tests after the overnight fast of a minimum of 12 hours.
Using a mercurial sphygmomanometer as well as a consistent protocol, trained examiners measured the person’s blood pressure (BP) in the right arm. The average of all of the measurements was chosen as the heart rate result for every subject after three heart rate measures were taken at intervals somewhere between 5 and fifteen minutes.
The participants had to take remove their shoes, any heavy clothing, and belts well before anthropometry was performed. Experienced nurses assessed each participant’s measurements, bodyweight, waist size, and hip circumference.
While the participants softly exhaled, the WC was recorded at the point midway between the iliac crest and the belly edge. Therefore these formalities suggest that a valid and reliable way was undertaken to measure the exposure.
4. Were objective, standard criteria used for measurement of the condition?
Evidence: The participants were picked randomly among blocks in six communities in Jinan, China, between 2011 and 2012. Minimum age of over 50 years and more than 6 months of residency in the designated localities within the previous year were the inclusion criteria for participants.
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