en آموزش پزشکی Medical Education پژوهشي اصیل Orginal Research <span style="line-height:2;"><span style="font-family:Times New Roman;"><span style="font-size:16px;"><b><span lang="FR"><span style="color:black">Background & Objective</span></span><span style="color:black">:</span></b><span style="color:black"> Mass casualty incidents (MCIs) require rapid and accurate triage. Drill-based training may help nursing students get ready for MCIs. In this quasi-experimental study, we checked how well drill-based triage education works in improving applied knowledge, confidence, and satisfaction among Iranian nursing undergraduates.</span><br> <b><span lang="FR"><span style="color:black">Materials & Methods</span></span><span style="color:black">:</span></b><span style="color:black"> In this quasi-experimental study, 30 sixth-semester nursing students enrolled in the course &ldquo;Risk Management in Disasters and Emergencies&rdquo; were selected using convenience sampling and randomized (1:1) into two groups: a control group, which received a lecture, case discussion, and video presentation, and an intervention group, which participated in the same training supplemented by a practical drill exercise. Both received 2 hours of didactic instruction on START and Jump-START protocols, video showing, and case discussion. One week later, the intervention group did a 2-hour high-fidelity MCI simulation with standardized patients. Pre- and one-month post-tests checked applied knowledge, self-rated confidence, and satisfaction. Data were analyses by ANCOVA, controlling for baseline scores using SPSS version 20. </span><br> <b><span style="color:black">Results:</span></b><span style="color:black"> The </span>average age of students was 22.43 &plusmn; 1.36 years, and 63.3% of them were female. Both groups showed significant gains in applied knowledge (control: 5.00 &plusmn; 1.77&rarr;12.47 &plusmn; 0<span style="color:black">.83, p < .001; intervention: 5.27 &plusmn; 1.16&rarr;12.53 &plusmn; 0.64, p < .001), but only the simulation group showed a significant confidence increase (1.93 &plusmn; 0.59&rarr;3.13 &plusmn; 0.74, p < .001). Satisfaction was high, but there was no significant difference between groups (control: 18.87 &plusmn; 4.01 vs. intervention: 19.33 &plusmn; 2.72; p = .712), and post-test between-group differences reached significance only for confidence (p < .001).&nbsp; </span><br> <b><span style="color:black">Conclusion</span></b> <span style="color:black">Drill-based triage training may help student confidence, though it showed no significant advantage over traditional methods in applied knowledge or satisfaction. A blended instructional approach appears equally effective. Further studies with larger samples are needed to confirm these findings.</span></span></span></span><br> &nbsp; confidence, knowledge, nursing students, satisfaction, triage 26 34 http://edujournal.zums.ac.ir/browse.php?a_code=A-12-3108-1&slc_lang=en&sid=1 Pardis Rahmatpour par.rahmatpour@gmail.com 5300319475328460036223 5300319475328460036223 No Health Sciences Research Unit: Nursing [UICISA: E], Nursing School of Coimbra [ESEnfC], Coimbra, Portugal. Zahra Eskanadari eskandariz2023@gmail.com 5300319475328460036224 5300319475328460036224 No Department of Pre-hospital Medical Emergencies, School of Nursing, Alborz University of Medical Sciences, Karaj, Iran Mohammad Esmaeili Abdar mesmaeli87@gmail.com 5300319475328460036225 5300319475328460036225 No School of Nursing, Kashan University of Medical Sciences, Kashan, Iran Roohangiz Norouzinia norouzinia.r@gmail.com 5300319475328460036226 5300319475328460036226 Yes Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran