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Peer-reviewedCC BY-NC-NDBMC research notes

Speed-quality divergence in a one-handed square-knot OSCE station: implications for total-score interpretation.

  • Minghui Yue1
  • Junjun Li1
  • Yang Liu1
  • Jiachun Zheng2
  • Weishan Zhang3
  • Chujun Shi4
4 affiliations
  1. 1Medical Simulation Center, Shantou University Medical College, No. 22 Xinling Road, Shantou, 515041, Guangdong, China.
  2. 2The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China.
  3. 3Medical Simulation Center, Shantou University Medical College, No. 22 Xinling Road, Shantou, 515041, Guangdong, China. [email protected].
  4. 4Medical Simulation Center, Shantou University Medical College, No. 22 Xinling Road, Shantou, 515041, Guangdong, China. [email protected].
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Abstract

Objective

To describe the relation between speed, graded knot tightness, and the compensatory total score in a one-handed square-knot Objective Structured Clinical Examination (OSCE) station at one institution.Results

Scoring records from 449 undergraduate medical students were retrospectively analyzed. Full-mark rates were 74.2% for speed and 33.2% for tightness, a 41.0-percentage-point ceiling contrast. Among the 433 students (96.4%) who met the 60% passing threshold (≥ 15/25), 284 (65.6%, 95% confidence interval [CI] 61.0-69.9) scored below the stringent 5/5 tightness ceiling, a rubric-defined rather than clinical bar. The most concerning rubric-defined subgroup comprised the 25 passers (5.8%, 95% CI 3.9-8.4) who received 0/5 ("clearly visible gap"), although this category has not been validated as a patient-safety endpoint. At a 70% threshold, 61.7% (95% CI 56.7-66.4) remained below the ceiling. In the pooled binary model, T4 had the largest odds ratio; its positive association persisted in both station/rater groups, although its magnitude differed and it was not the largest association in Station A. T4 is a marker, not a causal lever. This single-center finding is hypothesis-generating; multi-site, multi-rater validation is required.

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Cite

BibTeXRIS
BibTeX
@article{yue2026speedquality,
  title = {{Speed-quality divergence in a one-handed square-knot OSCE station: implications for total-score interpretation.}},
  author = {Minghui Yue and Junjun Li and Yang Liu and Jiachun Zheng and Weishan Zhang and Chujun Shi},
  journal = {BMC research notes},
  year = {2026},
  month = aug,
  doi = {10.1186/s13104-026-07951-y},
  url = {https://europepmc.org/article/MED/42968197},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Speed-quality divergence in a one-handed square-knot OSCE station: implications for total-score interpretation.
AU  - Minghui Yue
AU  - Junjun Li
AU  - Yang Liu
AU  - Jiachun Zheng
AU  - Weishan Zhang
AU  - Chujun Shi
PY  - 2026
DA  - 2026/08/04
JO  - BMC research notes
DO  - 10.1186/s13104-026-07951-y
UR  - https://europepmc.org/article/MED/42968197
AB  - Objective  To describe the relation between speed, graded knot tightness, and the compensatory total score in a one-handed square-knot Objective Structured Clinical Examination (OSCE) station at one institution.Results  Scoring records from 449 undergraduate medical students were retrospectively analyzed. Full-mark rates were 74.2% for speed and 33.2% for tightness, a 41.0-percentage-point ceiling contrast. Among the 433 students (96.4%) who met the 60% passing threshold (≥ 15/25), 284 (65.6%, 95% confidence interval [CI] 61.0-69.9) scored below the stringent 5/5 tightness ceiling, a rubric-defined rather than clinical bar. The most concerning rubric-defined subgroup comprised the 25 passers (5.8%, 95% CI 3.9-8.4) who received 0/5 ("clearly visible gap"), although this category has not been validated as a patient-safety endpoint. At a 70% threshold, 61.7% (95% CI 56.7-66.4) remained below the ceiling. In the pooled binary model, T4 had the largest odds ratio; its positive association persisted in both station/rater groups, although its magnitude differed and it was not the largest association in Station A. T4 is a marker, not a causal lever. This single-center finding is hypothesis-generating; multi-site, multi-rater validation is required.
SN  - 1756-0500
ER  -