A hinting strategy for online learning of radiograph interpretation by medical students.
Context We examined whether a 'hint' manoeuvre increases the time novice medical learners spend on reviewing a radiograph, thereby potentially increasing their interpretation accuracy. Methods Senior year medical students were recruited into a randomised control, three-arm, multicentre trial. Studen...
| Publicado en: | Medical Education Vol. 47; no. 9; pp. 877 - 888 |
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| Autores principales: | , , , , , , |
| Formato: | pictorial research tables/charts randomized controlled trial Journal Article |
| Publicado: |
Wiley-Blackwell
Sep2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104211197&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104211197 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03080110 ESF jtl: Medical Education issn: 03080110 maglogo: Y pubinfo: dt: Sep2013 vid: 47 iid: 9 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 104211197 89658909 10.1111/medu.12182 NLM23931537 104211197 ppf: 877 ppct: 11 formats: fmt: @attributes: type: P tig: atl: A hinting strategy for online learning of radiograph interpretation by medical students. aug: au: Boutis, Kathy Pecaric, Martin Shiau, Maria Ridley, Jane P Gladding, Sophie S Andrews, John V Pusic, Martin affil: The Hospital for Sick Children sug: subj: Education, Medical Learning Methods Radiography Diagnostic Imaging Evaluation Models, Theoretical Outcomes of Education Human Funding Source Randomized Controlled Trials Multicenter Studies Descriptive Statistics Confidence Intervals Prospective Studies Data Collection, Computer Assisted Algorithms Coefficient alpha Pretest-Posttest Design Random Assignment Effect Size One-Way Analysis of Variance Post Hoc Analysis Students, Medical ab: Context We examined whether a 'hint' manoeuvre increases the time novice medical learners spend on reviewing a radiograph, thereby potentially increasing their interpretation accuracy. Methods Senior year medical students were recruited into a randomised control, three-arm, multicentre trial. Students reviewed an online 50-case learning set that varied in degree of 'hint' intervention. The 'hint' was a dialogue box that appeared after a student submitted an answer, encouraging the student to re-evaluate their interpretation. The students in the control group received no hints. In the weak intervention group, students received 'hints' with 66% of their incorrect interpretations and 33% of those that were correct. In the strong intervention group, the incorrect interpretation hint frequency was 80%, whereas for correct responses it was 20%. All students completed a 20-case post-test immediately and 2 weeks after the 50 cases. The primary outcome was student performance on the immediate post-test, measured as the ability to discriminate between normal and abnormal films (dPrime). Secondary outcomes included the probability of considering the hint, time spent on learning cases and knowledge retention at 2 weeks. Results We enrolled 117 medical students from three sites into the three study groups: control (36), weak intervention (40) and strong intervention (41) groups. The mean ( standard deviation) dPrime in the control, weak and strong groups were 0.4 (1.1), 0.7 (1.1) and 0.4 (0.9), respectively ( P = 0.4). In the weak and strong groups, participants reconsidered answers in 556 of 1944 (28.6%) hinting opportunities, and those who reconsidered their answers spent a mean (95% confidence interval) of 13.9 (11.9, 16.0) seconds longer on each case. There were no significant differences in knowledge retention at 2 weeks between the groups ( P = 0.2). Conclusions Although the implemented hinting strategy did result in students spending more time considering a proportion of the cases, overall it was not effective in improving student performance. pubtype: Academic Journal doctype: pictorial research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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