OSCE designs with 5-10 stations achieve good internal consistency (Cronbach's alpha = 0.83), outperforming designs with fewer than 5 or more than 10 stations¶

Claim · All claims
Evidence · 1 study · quant-synthesis r3 · q3
Currency · newest study 2025 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Meta-analysis of 23 studies shows OSCEs with 5-10 stations achieve good internal consistency (alpha = 0.83, 95% CI: 0.81-0.84), significantly better than fewer than 5 stations (alpha = 0.75) or more than 10 stations (alpha = 0.77). → Peng Qiyun 2025

Evidence¶

Peng Qiyun 2025¶

Peng Qiyun, Luo Jiani, Wang Chunyan, Chen Lei, Tan Shenglan. (2025). Impact of station number and duration time per station on the reliability of Objective Structured Clinical Examination (OSCE) scores: a systematic review and meta-analysis. BMC Medical Education. https://doi.org/10.1186/s12909-025-06691-0

q3 · i? · quant-synthesis · r3

Random-effects meta-analysis of 23 studies (26 alpha values) categorized by station number (<5, 5-10, >10). The 5-10 station group achieved the highest pooled alpha of 0.83, meeting the threshold for good internal consistency, while both smaller and larger station counts fell below it.

"good internal consistency was achieved when the station number was between 5 and 10 (Cronbach's alpha = 0.83, 95% CI: 0.81, 0.84). However, internal consistency was poorer when the station number was less than 5 (Cronbach's alpha = 0.75, 95% CI: 0.72-0.78) or more than 10 stations (Cronbach's alpha = 0.77, 95% CI: 0.75-0.80)."

Discussion¶

Related Claims¶

• Cronbach's alpha values for OSCE scores vary widely across studies, ranging from 0.43 to 0.93, with most studies not reaching good internal consistency — related
• When OSCEs have 5-10 stations, duration per station under 10 minutes yields significantly better internal consistency (alpha = 0.88) than 10 or more minutes (alpha = 0.64) — related
• When station number varies widely, duration time per station is not a major factor affecting OSCE internal consistency — related
• Publication bias is present in the OSCE reliability literature, with funnel plot asymmetry detected by Egger's regression test (p < 0.001) — related
• A six-station sport medicine OSCE showed high reliability and construct validity, with senior residents outscoring junior residents — a narrower finding that bears on this claim
• Correlations between different OSCE station scores are weak, with a pooled Pearson correlation of 0.27 — related