What is the difference between PTSD avoidance symptom severity post scores of critical illness survivors who receive nurse-initiated diaries during hospitalization and critical illness survivors who do not receive nurse-initiated diaries during hospitalization

What is the difference between PTSD avoidance symptom severity post scores of critical illness survivors who receive nurse-initiated diaries during hospitalization and critical illness survivors who do not receive nurse-initiated diaries during hospitalization at a large military medical center in the Pacific Region?