Health Resarch Methods - Article Critique – Article Example

Health research methods Article The hypothesis of this study is ambiguous. It should be declarative for itsdictation of the study. “Family functions influence weight loss of African Americans and whites.” The Homeostatic theory would be a reference to this theory. Sampling strategies are well adjusted in this study. It is a study of 217 out of 291 persons (Carmen, 2010). There are no biases, and the sample is neither large nor minute for the study. However, randomness is not proven in the sample. The study does not offer an apparent breakdown of the demographics. The study does not have a direct link with the study, since it is not clearly stated. This study requires a keen study, since the glucostatic and metabolism theories would coincide with the ideal theory quoted for this context. This study does not manifest biases that may diminish its accuracy.
Article 2
This study lacks a clear hypothesis statement. “Changes made in diet are independent from changes physical activity during weight loss.” This would be the ideal hypothesis. The Metabolism theory would guide this study. Choosing this theory and the hypothesis would make this study more accurate, clear and authentic. The sampling is also ambiguous, since the researcher does not quote the total number of individuals represented (CL Dunn, 2006). It is difficult to determine whether the sample is large or small. There is bias in the sampling, since the women are many than men by a substantial margin. Evidently, the sample was not chosen randomly and this leads to exaggerated predictions and findings. The hypothesis is not stated, and it does not link with the theory. There is no other theory that has a probability to give the same recommendations for this study. Biasness of the sample would lead to error in this study.
Article 3
An ideal research design requires a clearly stated hypothesis. The hypothesis is a statement that dictates the course of the research. In this case, the data obtained in research should either prove or nullify the hypothesis. The hypothesis of this research should have taken a declarative nature. “Waiting impairs the process of weight loss.” This should have been the hypothesis for the research findings to prove or nullify it. In this study, the glucostatic theory would be a recommendable reference. This study therefore requires a clear statement of the hypothesis, and a direct link amongst the study and the glucostatic theory. The sampling strategy is also ambiguous (Glenn, 2012). Research should not choose a very small sample. This creates a large probability of error. A large sample would also lead to recurring figures hence tampering with the frequency and the mode of the research. However, the distribution is outstanding due to existence of both genders (Glenn, 2012). This research does not link with the hypothesis. There is no other theory that would coincide with the recommended one. Articulations in this study are not biased. They key challenge is in the hypothesis formulation and relating it to the study.
References
Carmen D. Samuel-Hodge, J. C. (2010). Family Functioning and Weight Loss in a Sample of African Americans and Whites. The Society of Behavioral Medicine.
CL Dunn, P. H. (2006). The comparative and cumulative effects of a dietary restriction and exercise on weight loss. International Journal of Obesity , 30, 112-121.
Glenn, N. M. (2012). Weight-ing : The Experience of Waiting on Weight Loss. Qualitative Health Research , 23(3) 348–360.