Abstract: Objective To investigate the impact of trainer experience and the types of trainees on quantitative teaching score for surgical education. Methods The present study adopted two-way repeated measures design. The quantitative teaching scores were collected between September 2018 and January 2020. The impact factors were trainer experience and student category. Repeated measure was performed by recording teaching score each month. Results The average of overall teaching score was 0.98±1.58/Teacher/Month. Both teacher experience(P＜0.001) and student category (P＜0.001) had significant impact on teaching score, and these two factors had interaction effect. Teacher experience had remarkable influence on resident and graduate subgroup compared to the other student category. In resident and graduate subgroup, trainer experience had a positive correlation with teaching score (All the between-subgroup comparisons had P＜0.001). However, this effect diminished in the other student category. Conclusions The present teaching system puts in great effort to surgical education for resident and graduate students. And trainer experience is positively correlated with quantitative teaching score.

Key words: surgical teaching for breast surgery, quantitative evaluation, trainer experience, student category