探讨联合Up To Date循证系统的四步法腹腔镜培训对住院医师和进修医师规范化培训的应用效果，并分析阶梯式技能训练与循证决策支持之间的协同效应。

采用前瞻性随机对照设计，纳入首都医科大学第三临床医学院12名未受训医师（住院医师与进修医师1∶1匹配），随机分为研究组与对照组，研究组采用联合Up To Date医学循证系统的"理论-模拟-模型-临床"四步法阶梯式腹腔镜培训模式，对照组采用传统"师带徒"模式进行培训。采用独立样本t检验或χ²检验比较2组学员理论考核、客观结构化技术技能评估（OSATS）操作评分、临床决策能力及并发症处理效率的差异，比较研究组内住院医师与进修医师操作流畅性的差异，评估不同培训模式的效果。

研究组理论考核得分、OSATS总分及紧急事件决策正确率均高于对照组[（92.4±3.1）分vs （85.7±4.2）分；（28.6±2.3）分vs （25.1±3.0）分；89.5% vs 73.2%]，差异具有统计学意义（t=5.12，P<0.001；t=3.87，P=0.001；χ²=5.82，P=0.016）。研究组中，住院医师的操作流畅性提升幅度高于进修医师（Δ3.8±0.9分vs Δ1.2±0.7分，t=3.42，P=0.003）。

联合Up To Date循证系统的腹腔镜四步法培训模式可显著提升不同层级医师的腹腔镜综合诊疗能力，尤其对低年资住院医师的基础操作能力提升效果明显。

To investigate the synergistic effect of the "Four-Step" laparoscopic training method combined with the Up To Date evidence-based system in the standardized training for resident physicians and visiting physicians, and analyze the synergistic effect between stepped skill training and evidence-based decision-making support.

A prospective randomized controlled trial was conducted, involving 12 untrained physicians (with a 1:1 ratio of residents to fellows) from the Third Clinical Medical College of Capital Medical University. Participants were randomly assigned to either the experimental group or the control group. The study group received the staged "four-step" laparoscopic training integrated with the Up To Date evidence-based medical system, while the control group underwent traditional apprenticeship-style training. Independent-samples t-test or Chi-square test was used to compare the differences in theoretical assessment scores, Objective Structured Assessment of Technical Skills (OSATS) operation scores, clinical decision-making ability and complication management efficiency between the two groups of trainees, so as to evaluate the effects of different training modes.

The study group demonstrated significantly better performance than the control group in perioperative theoretical scores, total OSATS scores, and correct decision rate in emergency scenarios (92.4±3.1 vs 85.7±4.2, 28.6±2.3 vs 25.1, 89.5% vs 73.2%), and the differences were statistically significant (t=5.12, P<0.001; t=3.87, P=0.001; χ²=5.82, P=0.016). Within the study group, residents showed a greater improvement in operational fluency compared to fellows (Δ3.8±0.9 vs Δ1.2±0.7, t=3.42, P=0.003).

The "Four-Step" method significantly combined with the Up To Date evidence-based system enhances comprehensive laparoscopic skills among multi-level physicians, with particularly notable improvement in basic operational skills for junior physicians.