Table 3. Description of Mean Uncertainty Score (MUIS-C) (N = 153).

Scale item	Mean (SD)
1. I do not know what is wrong with me.	2.5 (1.1)
2. I have a lot of questions without answers.	2.9 (1.2)
3. I am unsure if my illness is getting better or worse.	3.1 (1.1)
4. It is unclear how bad my pain will be.	3.3 (1.1)
5. The explanations they give about my condition seem hazy to me.	2.76 (1.1)
6. The purpose of each treatment is clear to me.	2 (0.9)
7. My symptoms continue to change unpredictably.	3.67 (0.86)
8. I understand everything explained to me.	1.8 (0.7)
9. The doctors say things to me that could have many meanings.	2.79 (1)
10. My treatment is too complex to figure out.	2.6 (0.7)
11. It is difficult to know if the treatments or medications I am getting are helping.	2.7 (0.9)
12. Because of the unpredictability of my illness, I cannot plan for the future.	3.4 (1)
13. The course of my illness keeps changing. I have good and bad days.	3.8 (0.87)
14. I have been given many differing opinions about what is wrong with me.	2.72 (0.9)
15. It is not clear what is going to happen to me.	3.5 (0.9)
16. The results of my test are inconsistent.	3 (0.7)
17. The effectiveness of the treatment is undetermined.	2.9 (0.8)
18. Because of the treatment, what I can do and cannot do keeps changing.	3.67 (0.9)
19. I’m certain they will not find anything else wrong with me.	2.3 (1.2)
20. The treatment I am receiving has a known probability of success.	2.7 (0.7)
21. They have not given me a specific diagnosis.	2.47 (1)
22. The seriousness of my illness has been determined.	2.71 (1)
23. The doctors and nurses use everyday language so I can understand what they are saying.	2.45 (0.9)
Total mean	66.1 (SD, 11.1)