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Students Are Rarely Independent: When, Why, and How to Use Random Effects in Discipline-Based Education Research.

ABSTRACT: Discipline-based education researchers have a natural laboratory-classrooms, programs, colleges, and universities. Studies that administer treatments to multiple sections, in multiple years, or at multiple institutions are particularly compelling for two reasons: first, the sample sizes increase, and second, the implementation of the treatments can be intentionally designed and carefully monitored, potentially negating the need for additional control variables. However, when studies are implemented in this way, the observations on students are not completely independent; rather, students are clustered in sections, terms, years, or other factors. Here, I demonstrate why this clustering can be problematic in regression analysis. Fortunately, nonindependence of sampling can often be accounted for with random effects in multilevel regression models. Using several examples, including an extended example with R code, this paper illustrates why and how to implement random effects in multilevel modeling. It also provides resources to promote implementation of analyses that control for the nonindependence inherent in many quasi-random sampling designs.

SUBMITTER: Theobald E

PROVIDER: S-EPMC6234830 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Students Are Rarely Independent: When, Why, and How to Use Random Effects in Discipline-Based Education Research.

Theobald Elli E

CBE life sciences education 20180901 3

Discipline-based education researchers have a natural laboratory-classrooms, programs, colleges, and universities. Studies that administer treatments to multiple sections, in multiple years, or at multiple institutions are particularly compelling for two reasons: first, the sample sizes increase, and second, the implementation of the treatments can be intentionally designed and carefully monitored, potentially negating the need for additional control variables. However, when studies are implemen ...[more]

PMID: 30142053

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Project description:IntroductionOne argument for introducing research in bachelor`s degree in health care is to ensure the quality of future health care delivery. The requirements for research-based education have increased, and research on how research-based education is experienced is limited, especially in bachelor health care education programmes. The aim of this study was to explore how occupational therapy students and faculty members experienced and perceived research-based education.MethodsThis qualitative, interpretative description consisted of three focus group interviews with occupational therapy students in their final year (n = 8, 6 and 4), and three focus group interviews with faculty members affiliated with occupational therapy programmes in Norway (n = 5, 2 and 5). Interviewing both students and faculty members enabled us to explore the differences in their experiences and perceptions.ResultsFive integrative themes emerged from the analysis: "introducing research early", "setting higher expectations", "ensuring competence in research methods", "having role models" and "providing future best practice". Research was described as an important aspect of the occupational therapy bachelor program as it helps ensure that students achieve the necessary competence for offering future best practice. Students expressed a need to be introduced to research early in the program, and they preferred to have higher expectations regarding use of research. Competence in research methods and the importance of role models were also highlighted.ConclusionsUndergraduate health care students are expected to be competent in using research. Findings from our study demonstrated that the participants perceived the use of research during training as important to ensure future best practice. Increasing the focus on research in the programme's curricula and efforts to improve students' formal training in research-specific skills could be a starting point towards increased use of research in the occupational therapy profession.

Project description:ObjectiveAlzheimer disease (AD) risk factors are present throughout the lifespan. This randomized controlled trial evaluated the effectiveness of various online education strategies concerning AD risk reduction and brain health in younger populations.MethodHigh school and college students were recruited via social media (Facebook and Instagram) to join AlzU.org, an evidence-based education portal, and were randomized to 1 of 4 courses: highly interactive webinar lessons narrated by actor Seth Rogen (celebrity webinar) or a physician (doctor webinar), minimally interactive video lessons with Seth Rogen (celebrity video), or minimally interactive video lessons (control). Surveys were administered at baseline and postcourse. The primary outcome was change in knowledge of AD risk reduction assessed by pre vs post lesson quiz scores. Secondary outcomes included change in awareness of AD research, hopefulness about AD, interest in pursuing health care, willingness to volunteer, and likelihood of recommending AlzU.org.ResultA total of 721 participants joined. A total of 281 (38.9%) completed the course. Among college students, quiz score improvements were greater in celebrity webinar and celebrity video vs doctor webinar and control. Among high school students, no differences were found in quiz scores. In both groups, celebrity webinar, celebrity video, and doctor webinar resulted in greater improvements in awareness that nutrition and exercise may reduce AD risk vs controls. Among college students, celebrity webinar and celebrity video group participants felt more hopeful about the future of AD and more likely to recommend AlzU.org vs doctor webinar and control participants. Among college students, celebrity webinar, celebrity video, and doctor webinar participants were more willing to volunteer for AD causes and pursue health care careers vs controls.ConclusionOnline education involving a celebrity may be an effective strategy for educating college students about AD risk reduction strategies. Further studies are warranted in high school students.

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Students Are Rarely Independent: When, Why, and How to Use Random Effects in Discipline-Based Education Research.

Publications

Students Are Rarely Independent: When, Why, and How to Use Random Effects in Discipline-Based Education Research.

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