Differential effects of team-based learning on clinical reasoning

Clinical reasoning (CR) is the ability to integrate information, knowledge and contextual factors for patient care. Few studies have explored effects of team-based learning (TBL) on neurological CR. This study compared simplified TBL (sTBL) against interactive lectures (IL) for teaching CR in neuroanatomical localisation (NL) and neurological emergencies (NE), assessed using a validated Script Concordance Test (SCT).

A crossover study was conducted with third- and fifth-year undergraduates, randomly assigned to two groups, from the Yong Loo Lin School of Medicine in Singapore. Group 1 was taught NE with sTBL and NL with IL, whereas Group 2 was taught NL with sTBL and NE with IL. Teaching was conducted sequentially over 3 h followed immediately by the SCT. The primary outcome was the difference in mean SCT scores of NE and NL taught with sTBL versus IL.

A total of 179 students (Group 1, n = 81; Group 2, n = 98) participated. Mean NL SCT scores for students taught with sTBL were significantly higher compared with IL (64.8% vs. 61.7%, mean difference 3.1%, 95% confidence interval [CI] 0.6%-5.5%, p = 0.013); effect size was 0.38. Mean NE SCT scores were similar between students taught with sTBL or IL (66.6% vs. 67.0%, mean difference -0.4%, 95% CI -2.2% to 3.1%, p = 0.75).

sTBL was superior to IL for teaching NL, whereas both methods were comparable for teaching NE. TBL may be suitable for teaching more complex neurological topics involving diagnostic reasoning through development of problem representation, hypothesis generation and illness script selection.