This could have the desired effect of increasing the expected effect size.
Attrition rates must be accounted for when determining sample size. If there was a 30% attrition rate, the determined sample size would remain realistic, since 88 nursing schools is still a considerable number of schools to work with as long as the numbers of schools that do and do not use case studies in the study are relatively equal.
Collecting a sample of this size would not take a large amount of time. The recruitment process would involve identifying BSN and ADN programs who are HESI clients and either do or do not use standardized case studies. Enough programs would have to be identified that fall into each group for the study. No agencies would be required for the collection of this sample. The information and means necessary for recruitment for this study are available directly to the researcher through various accessible resources, and the researcher is able to self-sufficiently recruit for the study through personalized direct contact with nursing schools.
The timeframe required for this study would be the duration of the nursing curriculum, which is 5 semesters or 20 months. A sample inclusion criterion would be schools of nursing that were clients of HESI, inc. A sample exclusion criterion would be schools that were not clients of HESI, inc. These criteria would be used to ensure that the intervention under investigation (the use of HESI standardized case studies) is the treatment being measured.
Instrumentation
1). Demographic data
Demographic data will be collected on all schools involved in the study. This data will include details such as the breakdown of students according to age, sex, educational background, etc.
2) HESI exam
The measurement tool that will be used to measure the proportion of passing grades within schools that do or do not use case studies as part of their curricula is the HESI exit exam. This instrument will be chosen because it is a widely used, standardized test that all nursing students at schools that are HESI clients must complete in order to pursue careers within the field of nursing. Also, the presence of case studies in the curricula may affect the scores on the HESI exam, influencing the proportion of passing and failing grades within each school.
It is hypothesized that the presence of case studies within the curricula will result in schools adhering to this type of curricula exhibiting a larger proportion of passing grades in comparison to schools that do not utilize case studies in their curricula. The HESI exit exam comprehensively assesses the knowledge attained by students in these nursing schools, and it is therefore an appropriate measure of the dependent variable and will be useful for the study.
The operational definition of the HESI exit exam is compatible with the conceptual definition of the variable. The dependent variable (proportion of passing grades) may be conceptually defined as an indication of how effective the presence of case studies in the nursing school curricula is at improving nursing students' comprehension and retaining of knowledge acquired from curricula. The HESI exam is compatible with this conceptual definition because it is designed to assess the particular knowledge that nursing students are exposed to and expected...
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