A case-controlled trial evaluating the summative performance of the 3-D skills Model

Area of Science:

• Medical Education
• Clinical Skills Training
• Assessment Methods

Background:

• Near-peer teaching is widely used but often fails to improve summative OSCE performance.
• The 3-step deconstructed (3-D) skills model showed initial promise in formative OSCEs.
• Existing models lack consistent evidence of impact on summative clinical examination performance.

Purpose of the Study:

• To evaluate the effect of the 3-D skills near-peer teaching model on summative OSCE grades.
• To determine if this pedagogical approach translates to improved long-term clinical assessment outcomes.
• To assess the efficacy of the 3-D skills model in enhancing medical student performance.

Main Methods:

• Seventy-nine third-year medical students participated in a formative OSCE.
• Students received either 3-D skills teaching or unguided practice for 3 minutes per station.
• Summative OSCE results were compared against the wider cohort to assess performance differences.

Main Results:

• Both 3-D skills and unguided practice groups outperformed the general cohort in summative OSCEs.
• The 3-D skills group achieved a median increase of one station pass, potentially improving grades from B to A.
• Improvement in the unguided practice group lacked educational significance.

Conclusions:

• The 3-D skills model integrated into formative OSCEs significantly boosts summative OSCE performance.
• This finding addresses conflicting literature on formative OSCEs' translation to summative success.
• Institutional investment in the 3-D skills model may enhance clinical examination skills effectively.