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| No. | Items | Dimension 1 (functional health literacy) | Dimension 2 (interactive health literacy) | Dimension 3 (critical health literacy) |
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| 1 | I have knowledge of the anatomy and physiology of pain, as well as its mechanism of conduction | 0.806 | | |
| 2 | I know the difference between acute pain and chronic pain | 0.804 | | |
| 3 | I am knowledgeable regarding the classification and nature of chronic pain | 0.876 | | |
| 4 | I am familiar with essential information concerning chronic pain, such as the working hours and locations of pain specialists | 0.727 | | |
| 5 | I have knowledge of strategies and solutions for preventing and treating chronic pain and do not have difficulties acquiring relevant information | 0.877 | | |
| 6 | I have knowledge of the characteristics, developmental trends, and prognoses of chronic pain | 0.895 | | |
| 7 | I have knowledge of the nature, dosage instructions, and side effects of analgesic medicine and can complete related medical forms calculating the pain medication dose when necessary | 0.872 | | |
| 8 | I have knowledge of the main comorbidities of chronic pain, such as distress and depression, and many other psychological issues | 0.867 | | |
| 9 | I have knowledge of the safety and risks of increasing my engagement in activities | 0.810 | | |
| 10 | I have knowledge of strategies and relaxation techniques for improving sleep | 0.679 | | |
| 11 | I am willing to accept therapy for chronic pain | | 0.774 | |
| 12 | I trust physicians and therapeutic methods | | 0.765 | |
| 13 | I have confidence in my self-care abilities and the effects of therapy for chronic pain | | 0.735 | |
| 14 | I am willing to emphasize my needs regarding physiological, psychological, and social support for chronic pain | | 0.764 | |
| 15 | I am willing to spend time and effort to relieve my pain | | 0.793 | |
| 16 | I am willing to pay for my medical expenses (mainly referring to out-of-pocket expenses) | | 0.806 | |
| 17 | I am willing to pay for chronic pain management (referring to medical costs) | | 0.808 | |
| 18 | I adhere to physicians’ advice | | 0.770 | |
| 19 | I make some preparations before visiting the physician | | 0.600 | |
| 20 | I engage in adequate communication with health-care providers regarding the status of my pain | | 0.687 | |
| 21 | I proactively seek help when I do not comprehend something relating to the prevention and control of chronic pain | | 0.462 | |
| 22 | I implement useful information I have obtained regarding chronic pain prevention and control | | 0.595 | |
| 23 | I make detailed inquiries when I do not understand physicians’ explanations | | 0.590 | |
| 24 | I perform timely identification of my own chronic pain and seek professional help | | 0.557 | |
| 25 | When chronic pain occurs, I can implement coping strategies in a timely manner | | | 0.631 |
| 26 | I can use analgesic medical equipment/instruments to relieve chronic pain | | | 0.515 |
| 27 | I can adjust my personal mental outlook to manage the psychological outcomes of chronic pain | | | 0.501 |
| 28 | I can collect different opinions about health information and analyze and compare their applicability, accuracy, and reliability | | | 0.622 |
| 29 | I can self-monitor my pain | | | 0.605 |
| 30 | I can make decisions regarding analgesics by incorporating physicians’ advice with the characteristics of my own situation | | | 0.651 |
| 31 | I can take an objective view of the adverse effects of analgesic drugs and proactively address these effects | | | 0.547 |
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