Study participants will be evaluated on self-efficacy related to chronic pain, which can be defined as an individual’s confidence he/she can successfully produce desirable results related to living with chronic pain. The PSEQ has 10 items which are rated on a 7-point ordinal scale (ranging from 0: “not at all confident” to 6: “completely confident”). It was adapted and validated to Brazilian Portuguese [29]. Previous research showed an effect on self-efficacy using a PNE intervention based on metaphors compared to an intervention using cognitive-behavioral concepts [35].
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