The three items with the highest and lowest scores in each dimension
| Items | Score |
| Knowledge | |
| Do you know the scoring criteria for SSD? | 3.56±1.276 |
| Do you know what assessment tools can diagnose SSD? | 3.55±1.193 |
| Do you know the incidence of SSD in ICU patients? | 3.54±1.207 |
| Do you think the actual occurrence of SSD in ICU is higher than the definite diagnosis in clinical practice? | 2.70±1.092 |
| Do you know the difference between SSD and delirium? | 3.21±1.200 |
| Do you know the major risk factors for SSD? | 3.26±1.115 |
| Attitudes | |
| Do you think your knowledge of SSD meets clinical needs? | 3.15±1.190 |
| Do you think SSD is widely recognised and effectively treated by medical professionals? | 2.63±1.031 |
| Do you think it is necessary for ICU staff to make bedside rounds and discuss SSD together? | 2.17±0.880 |
| Do you think it is necessary for ICU nurses to know about SSD in their clinical work? | 1.72±0.864 |
| Do you think it is necessary for ICU nurses to be able to assess and diagnose SSD? | 1.77±0.829 |
| Do you think it is necessary to routinely use assessment tools to assess SSD? | 1.93±0.828 |
| Practices | |
| I can timeously report the patient’s state of consciousness to the doctor. | 4.36±0.850 |
| I will carefully evaluate whether the patients need to be restricted to avoid the stimulation of unnecessary restraint. | 4.00±9.47 |
| I would recommend early transfer out of ICU if the condition permits. | 3.92±1.258 |
| I can be trained in SSD to improve my recognition and care. | 2.92±1.244 |
| I can use SSD assessment tools frequently in my clinical work. | 2.98±1.244 |
| I can use noise reduction, eye masks or earplugs at night to prevent patients’ sleep deprivation. | 3.29±1.257 |
ICU, intensive care unit; SSD, subsyndromal delirium.