Dyad practice is efficient practice: a randomised bronchoscopy simulation study

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Abstract

CONTEXT

Medical simulation training requires effective and efficient training strategies. Dyad practice may be a training strategy worth pursuing because it has been proven effective and efficient in motor skills learning. In dyad practice two participants collaborate in learning a task they will eventually perform individually. In order to explore the effects of dyad practice in a medical simulation setting, this study examined the effectiveness and efficiency of dyad practice compared with individual practice in the learning of bronchoscopy through simulation-based training.

METHODS

A total of 36 students of medicine were randomly assigned to either individual practice or dyad practice. The training setting included video-based instruction, 10 bronchoscopy simulator cases and instructor feedback. Participants in the dyad practice group alternated between physical and observational practice and hence physically undertook only half of the training cases undertaken by participants who practised individually. Pre-, post- and delayed (3 weeks) retention tests were used to assess skills according to previously validated simulator measures. Data were analysed using repeated-measures analysis of variance (ANOVA) on each dependent measure.

RESULTS

A significant main effect of test was found for all measures (F2,67 > 23.32, p < 0.001), indicating improvement in performance from pre-tests to post-tests and retention tests. No interaction was found between test and group (F2,67 < 0.26, p > 0.49), indicating parallel learning curves. Most importantly, no main effect of group was found for any of the measures, indicating no difference between learning curves (F1,34 = 2.08, p < 0.16).

CONCLUSIONS

Individual practice and dyad practice did not differ in their effectiveness for the acquisition of bronchoscopy skills through supervised simulation training. However, dyad practice proved more efficient than individual practice because two participants practising in dyads learned as much as one participant practising individually but required the same instructor resources and training time as the single learner.

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