# A Test Platform for Managing School Stress Using a Virtual Reality Group Chatbot Counseling System
## 4 Case Demonstration
### Offline Survey Result  
For this prototype test, students from a university filled out a questionnaire in class. Respondents were between 20 and 39 years old, including 68 females and 49 males. A total of 134 questionnaires were collected, 117 of which were valid. The stress level survey using the 10-point Likert scale (range = 0 to 9) showed that the students' stress level score averaged 5.40 points and the standard deviation was 1.60. Among the cohort, 26% of students had a stress level greater than 7 points, 22 females and 9 males, respectively. The 5-point Likert scale (range = 0 to 4) was used in the survey of students' stress and life. Among the sources of student stress, the average score for stress caused by schoolwork was the highest (2.73 points), and about 16% of students give 4 points for stress caused by schoolwork. In terms of stress affecting their lives, 58% of students stated that stress made them unable to rest or relax, and 47% stated that stress changed their sleeping habits. In terms of physical condition, 37% of students felt too fatigued to be effective, 36% of students felt stomach pain, and 35% of students experienced increased or decreased appetite due to stress. In terms of social interaction, 31% of students withdrew or even isolated themselves from others because of stress. In the 10-point Likert scale (range = 0 to 9) survey of coping with stress, the students' ability to cope with stress had an average of 5.28 points and a standard deviation of 1.88. Among them, 7% of the students have coped with stress levels of less than 2 points, including three females and five males. According to the results of the student stress analysis, students are experiencing a lot of stress with social disturbances which could endanger their health. Table 3 lists the 20 PCL-5 questions and the average score and standard deviation of each question. A score for each item higher than 3 out of 5 points means that there is a certain degree of severity, so the number of participants with a score higher than 3 points was counted. Next, scores of 20 questions were summed to provide a total severity score (range = 0 to 80). A cut-point score of 32 was used based upon current psychometric research references. A total of 35 students in the PCL-5 survey had ratings higher than 32 points, including 19 female and 16 male students. \begin{table}
\begin{tabular}{l c c c} \hline \hline
**In the Past Month, How Much Were You** & **Avg.** & **S.D.** &
\begin{tabular}{c} **Number of** \\ **Participants**\(\geq\) **3 Points** \\ \end{tabular} \\ \hline
1. Repeated, disturbing, and unwanted & 1.29 & 1.13 & 18 \\ memories of a stressful experience? & 0.97 & 1.09 & 12 \\ \hline
2. Repeated, disturbing dreams of a & 0.97 & 1.09 & 12 \\ stressful experience? & & & \\ \hline
3. Suddenly feeling or acting as if the & & & \\ stressful experience were actually & 1.18 & 1.09 & 16 \\ happening again (as if you were actually & & & \\ back there reliving it)? & & & \\ \hline
4. Feeling very upset when something & 1.79 & 1.09 & 30 \\ reminded you of the stressful experience? & & & \\ \hline
5. Having strong physical reactions when & & & \\ something reminded you of the stressful experience (for example, heart pounding, trouble breathing, sweating)? & 1.00 & 1.11 & 16 \\ \hline
6. Avoiding memories, thoughts, or feelings & & & \\ related to the stressful experience? & & & \\ \hline
7. Avoiding external reminders of the & & & \\ stressful experience (for example, people, places, conversations, activities, objects, or situations)? & 1.54 & 1.17 & 23 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Result of PCL-5. For the subjects tested, a total of 134 questionnaires were collected, of which 17 were incompletely answered and were removed. Among the 117 valid questionnaires, the median stress level was 6, and 67 subjects were in the higher stress level score group. Among the group with higher stress level, 27 subjects with more than 32 points of PCL-5 total score were listed as candidates for VRGC experiments in the future research.