Evidence for PBL effectiveness is rated low quality with considerable heterogeneity, attributed to instructor supervision, participant characteristics, and unstandardized assessment¶

Claim · All claims
Evidence · 1 study (2 entries) · quant-synthesis r2 · q2
Currency · newest study 2025 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? The umbrella review concludes that although current evidence suggests PBL is effective, the evidence level is relatively low and there is considerable heterogeneity. → Ge Wei-Li 2025 q2 i? The review identifies lack of instructor supervision and evaluation, participant baseline differences, and unstandardized assessment as potential sources of heterogeneity. → Ge Wei-Li 2025 (2)

Evidence¶

Ge Wei-Li 2025¶

Ge Wei-Li, Zhu Xia-Yin, Lin Jiang-Bo, Jiang Jian-Jun, Li Tao, Lu Yi-Fei, Mi Ya-Fei, Tung Tao-Hsin. (2025). Critical thinking and clinical skills by problem-based learning educational methods: an umbrella systematic review. BMC Medical Education. https://doi.org/10.1186/s12909-025-06951-z

q2 · i? · quant-synthesis · r2

The review's limitations section states the evidence level for PBL effectiveness is relatively low with considerable heterogeneity, and calls for more high-quality studies; no effect size is printed for this overall judgment.

"Finally, Although current evidence suggests that PBL is effective, the evidence level is relatively low, and there is considerable heterogeneity. Therefore, more high-quality studies are needed in the future to validate its effectiveness."

Ge Wei-Li 2025 (2)¶

Ge Wei-Li, Zhu Xia-Yin, Lin Jiang-Bo, Jiang Jian-Jun, Li Tao, Lu Yi-Fei, Mi Ya-Fei, Tung Tao-Hsin. (2025). Critical thinking and clinical skills by problem-based learning educational methods: an umbrella systematic review. BMC Medical Education. https://doi.org/10.1186/s12909-025-06951-z

q2 · i? · quant-synthesis · r2

The review's publication-bias section names lack of instructor supervision and evaluation, variations in participants' baseline characteristics and prior learning experience, and non-standardized assessment methods as contributors to the observed heterogeneity.

"One significant factor is the lack of supervision and evaluation of instructors in the existing research, which could lead to differences in teaching quality and thus contribute to heterogeneity."

Discussion¶

Related Claims¶

• Evidence on clinical reasoning teaching strategies is inconclusive, so no specific teaching strategy can currently be recommended — related
• PBL significantly improves clinical skill scores compared with lecture-based learning in medical education — related
• The overall effect of PBL in the tutor-background meta-analysis is modest (g = 0.27) with large, statistically significant heterogeneity — related
• PBL shows significant advantages in critical thinking compared with traditional education or team-based learning in nursing and clinical student populations — related