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Table 6 Summary of suggested revisions to the SAT

From: Are treatment benefits in neuropathic pain reflected in the self assessment of treatment questionnaire?

Item Original Changes Revised baseline item Revised follow up and last visit items
Instructions Please mark one response for each question Instructions to mark responses clarified. Instructions: Please mark your response by marking one of the boxes for each question below. Instructions: Please mark your response by marking one of the boxes for each question below.
Item 1 How do you assess your pain level after treatment in this study? 1. Item developed to assess pain level at baseline 1. Over the past 7 days, how would you rate your pain level? 1. Over the past 7 days, how much has the study treatment improved your pain level?
  - I feel my pain is much worse (−2) 2. Recall period changed to 7 days - No pain at all - Not at all
  - I feel my pain is somewhat worse (−1) 3. The response options were made consistent with the item stem and with other response options on the questionnaire - Mild pain - Slightly better
  - I feel my pain is no better and no worse (0) 4. Weighting numbers were removed - Moderate pain - Moderately better
  - I feel my pain is somewhat better (1)   - Severe pain - Quite a bit better
  - I feel my pain is much better (2)   - Very severe pain - Very much better
Item 2 How do you assess your activity level after treatment in this study? 1. Item developed to assess activity at baseline. 2. Over the past 7 days, how much has pain affected your ability to do the following activities: 2. Over the past 7 days, how has the study treatment improved your ability to do the following activities:
  - I feel much less active (−2) 2. Recall period changed to 7 days A. Daily self care activities, such as showering and dressing? A. Daily self care activities, such as showering and dressing?
  - I feel somewhat less active (−1) 3. The item was split into several questions that are more targeted to pain relief aspects noted during the qualitative interviews B. Daily activities, such as cleaning, fixing things around the house, grocery shopping, preparing meals, going to appointments, caring for someone else and other day to day tasks? B. Daily activities, such as cleaning, fixing things around the house, grocery shopping, preparing meals, going to appointments, caring for someone else and other day to day tasks?
  - I feel no more and not less active (0) 4. The response options were made consistent with the item stem and with other response options on the questionnaire C. Physical activities, such as walking, exercising, gardening or yard work? C. Physical activities, such as walking, exercising, gardening or yard work?
  - I feel somewhat more active (1) 5. Weighting numbers were removed Response options for A, B, and C Response options for A, B, and C
  - I feel much more active (−2)   - Not at all - Not at all
    - Slightly - Slightly better
    - Moderately - Moderately better
    - Quite a bit - Quite a bit better
    - Very much= - Very much better
Item 3 How has your quality of life changed after treatment in this study? 1. Item developed to assess quality of life at baseline. 3. Over the past 7 days, how much has pain affected the following aspects of your life: 3. Over the past 7 days, how much has the study treatment improved the following aspects of your life:
  - I feel my quality of life is much worse (−2) 2. Recall period changed to 7 days A. Emotional wellbeing such as mood, temperament or outlook on life? A. Emotional wellbeing such as mood, temperament or outlook on life
  - I feel my quality of life is somewhat worse (−1) 3. The item was split into several questions that are more targeted to QOL aspects noted during the qualitative interviews B. Ability to sleep? B. Ability to sleep?
  - I feel my quality of life is no better and no worse (0) 4. The response options were made consistent with the item stem and with other response options on the questionnaire C. Social functioning, such as participating in activities or relationships with friends and family? C. Social functioning, such as participating in activities or relationships with friends and family?
  - I feel my quality of life is somewhat better (1) 5. Weighting numbers were removed Response options for A, B, and C Response options for A, B, and C
  - I feel my quality of life is much better (2)   - Not at all - Not at all
    - Slightly - Slightly better
    - Moderately - Moderately better
    - Quite a bit - Quite a bit better
    - Very much - Very much better
Item 4 Would you undergo this treatment again? 1. This item now does not ask if the participant “would undergo” [treatment] as in the original question   4. Based on your experience with the study treatment, would you like to receive this treatment again?
  - No, definitely not (−2) 2. Weighting numbers were removed   - No, definitely not
  - No, probably not (−1)    - No, probably not
  - Unsure (0)    - Unsure
  - Yes, probably (1)    - Yes, probably
  - Yes, definitely (2)    - Yes, definitely
Item 5 How do you compare the treatment in this study to previous medication or therapies for your pain? 1. The item was rephrased to clarify the intended meaning of the question   5. Based on your experience with the study treatment, overall, how does this treatment compare to other treatments you have received for your pain?
  - Very much prefer previous (−2) 2. The response options were revised to fit the item stem.   - Very much worse
  - Somewhat prefer previous (−1) 3. Weighting numbers were removed   - Somewhat worse
  - No preference (0)    - No better no worse
  - Somewhat prefer this treatment (1)    - Somewhat better
  - Very much prefer this treatment (2)    - Very much better