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Table 2 The structure of the POST module of the Self-Injection Assessment Questionnaire© (SIAQ)v1.0 and the SIAQv1.1.

From: Assessment of self-injection experience in patients with rheumatoid arthritis: psychometric validation of the Self-Injection Assessment Questionnaire (SIAQ)

Items and sub-items Hypothetical domains (v1.0) Refined domains (v1.1)
1. In general, how afraid are you of needles? General feelings about injections Feelings about injections
2. In general, how afraid are you of having an injection?   
3. How anxious do you feel about giving yourself an injection? Feelings about giving self-injections  
4. How embarrassed would you feel if someone saw you with the self-injection device?   Self-image
5. How confident are you about giving yourself an injection in the right way?   Self-confidence
6. How confident are you about giving yourself an injection in a clean and sterile way?   
7. How confident are you about giving yourself an injection safely?   
8. Does your current way of taking your medication (self-injection) make you feel in control of your disease?   DELETED
9a. During and/or after the injection, how bothered were you by pain? Injection-site reaction burden Injection-site reactions
9b. During and/or after the injection, how bothered were you by burning sensation?   
9c. During and/or after the injection, how bothered were you by cold sensation?   
10a. During and/or after the injection, how bothered were you by itching at the injection site?   
10b. During and/or after the injection, how bothered were you by redness at the injection site?   
10c. During and/or after the injection, how bothered were you by swelling at the injection site?   
10d. During and/or after the injection, how bothered were you by bruising at the injection site?   
10e. During and/or after the injection, how bothered were you by hardening at the injection site?   
11. How much do you agree or disagree with the following: the cap is easy to remove. Device features Ease of use
12. How much do you agree or disagree with the following: the device fits comfortably in my hand.   
13. How much do you agree or disagree with the following: I can easily depress the plunger or button on the device.   
14. How much do you agree or disagree with the following: I can administer the injection without any help.   
15. How much do you agree or disagree with the following: the self-injection device is easy to use.   
16. How easy was it to give yourself an injection? Satisfaction with self-injection Satisfaction with self-injection
17. How satisfied are you with how often you give yourself an injection?   
18. How satisfied are you with the time it takes to inject the medication?   
19. Overall, how satisfied are you with your current way of taking your medication (self-injection)?   
20. Overall, how convenient is the self-injection device?   
21. Overall, how comfortable is the injection?   DELETED
22. After this study, would you choose to continue self-injecting your medication? Willingness to continue to self-inject Satisfaction with self-injection
23. After this study, how confident would you be to give yourself injections at home?