Aim of the study This study was conducted to determine the effect of case-based education on the development of nursing students' clinical reasoning skills in critical illnesses.~Research hypotheses H01: There is no difference between the experimental group and the control group in terms of their CRCF scores.~H02: Case-based education on clinical reasoning has no positive effect on student satisfaction.
Aim: This study was conducted to determine the effect of case-based education on the development of clinical reasoning skills of nursing students in critical illnesses.~Methods: The study was conducted between January 20 and June 30, 2021 using a pilot randomized controlled trial design. In the study, 22 volunteer students were assigned to the experimental and control groups by simple randomization. The experimental group was given case-based education to improve their clinical reasoning skills, and the control group continued the standard education process. Data were collected using a Student Information Form, the Clinical Reasoning Case Form (CRCF), the Student Satisfaction with Education Questionnaire, and a Form for Views on the Education. In the evaluation of data, frequency values, Fisher exact test, Mann-Whitney U, and Wilcoxon tests, Cohen's d coefficient for effect size, ITT analysis, and covariance analysis were used.