26 Sep Case Study The study was approved by the Universit
Case Study The study was approved by the University of Arizona Institutional Review Board. We recruited a convenience sample of 20 participants who were randomly assigned to control or intervention group using a list of random numbers from the Microsoft Excel random-number generator function. Inclusion criteria were self-identification as Mexican American, age between 18 and 75 years, diagnosis of type 2 diabetes, fluency in Spanish, and ability to walk without assistance. Potential participants who were pregnant; had a medical condition, such as heart failure, in which dietary changes and exercise were contraindicated; were cognitively impaired; or had participated in a diabetes self-management program within the previous 12 months were excluded from the study. Participants were recruited in a number of ways: flyers describing the study in Spanish were posted in high-traffic areas of the clinic, providers and staff were informed of the study and asked to refer prospective participants, and an experienced bilingual promotora contacted potential participants using the clinic’s diabetes roster and informed them of the study. To reduce systematic bias, the roster was numbered and calls were made using a list of random numbers from the Excel random-number generator function. Those people who spoke Spanish were then informed of the study and asked if they wished to learn more about the study. Approximately 60 Spanish speakers were contacted and 30 agreed to schedule an appointment to learn more about the study. The main reason given for not participating was the person’s work schedule. Of those who expressed interest in attending this information session, 8 did not attend. Reasons for not attending included an ill child, change in work schedule, lack of transportation, and change of mind. The remaining 22 potential participants attended the information session; 1 of these decided not to participate and 1 did not meet the inclusion criteria. Thus 20 participants were enrolled in the study. Source: Vincent D, Pasvogel, A: A feasibility study of a culturally tailored diabetes intervention for Mexican Americans. Biol Res Nurs 9:130, 2007. Answer the following questions about this study: -Identify the type of sampling technique used in this study and its strengths and weaknesses. -Describe some of the sample characteristics. -Explain how the researcher determined the sampling criteria (inclusion and exclusion criteria) for the study. -State the significance of the following statement: “Demographic and clinical characteristics of the refusers were statistically similar to those of the study sample.”
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