Developing a sampling strategy is one of the important steps in research as it dictates the quality of the results.

Developing a sampling strategy is one of the important steps in research as it dictates the quality of the results. A good sampling strategy should take care of the sample population, the reproducibility of the results and research question in mind. The different aspects of a sampling strategy will be defined in this task.
Target Population and Sample
The target population for this research is women who are 55 years and above and diagnosed with Osteoarthritis. The patients must have been admitted to Inova Fairfax Hospital Center medical unit at the time of the research. The target sample population is fifty patients with 50% being subjected to plant-based supplements and the other 50% having been given other medications.
Sampling Approach
This essay will utilize a purposive/selective sampling strategy, which is a non-probabilistic sampling strategy that rely on individual judgement in selecting members of a population. This method has the advantage of selecting participants based on other attributes. The results generated are, therefore, skewed towards a predefined outcome. The method is also less costly and has the advantage of generalizing the results to a larger population.
Inclusion and Exclusion Criteria
Patients that will be part of the sample will be expected to be women who are 55 years and above. The patients must also be suffering from osteoarthritis. The participants must also consent to the research. The exclusion criteria, on the other hand, will be women less than 55 years, with other underlying conditions.

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Factors that Influenced the determination of Sample Size
The sample size was determined first by approximating total population and taking 10% of the population as explained by Kotrlik and Higgins (2001). For a hospital that receives approximately 500 female patients, a good sample size would be 50 patients. The sampling method was another factor that influenced the sample size. The use of purposive sampling ensured that only those patients that meet the inclusion criteria are involved in the study.
Threats to Internal and External Validity
There are notable threats to internal validity. One such threat is history where moments to the study, some participants opt to withdraw their consent. Another threat is maturation where different results are derived during a pre-study and during the study itself. The threats to external validity include the selectin bias where some participants are left out despite being important contributors to the PICOT question.

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Cosmic Question
Would you use the same sampling strategy when doing qualitative and quantitative research? If not, what could be the difference?

Reference
Kotrlik, J. W. K. J. W., & Higgins, C. C. H. C. C. (2001). Organizational research: Determining appropriate sample size in survey research appropriate sample size in survey research. Information Technology, Learning, and Performance Journal, 19(1), 43.

SAMPLE SOLUTION

Purposive sampling strategy is a non-probabilistic sampling strategy often effectively used to explore specific cultural domains. The assumption is that there are already specific attributes the researcher is looking for and therefore an almost informed decision has already been made. The sampling strategy can be used for both qualitative | GET AN EXPERT FOR YOUR ASSIGNMENT /sampling is often used to identify and select cases that are rich in information by effectively utilizing limited resources. The sampling must however be consistent in the specific aims and assumptions that could be inherent in the observation under study. The advantage of using this method in qualitative research is that it gives an opportunity for the generalizations from the data, it can entail multiple phases and it is a cost-effective research | GET AN EXPERT FOR YOUR ASSIGNMENT /qualitative research, purposive sampling can as well be applied in quantitative research. Using the judgement of the research expert, purposive sampling…