32 CHAPTER 2 Outcomes See Table 1 for an overview of all outcome measures and their corresponding collection time points. Primary outcome Functional capability of the upper extremity The primary outcome measure for the clinical part of the RCT is the change in SRQDLV score from baseline to post intervention. The SRQ-DLV is a reliable and validated questionnaire measuring functional capability of the shoulder, arm and hand34 and has been shown to be sensitive to (changes in) functional capability of the shoulder in patients with NA. 1 Secondary outcomes Secondary outcome measures are divided into clinical measures and measures related to motor planning (see below). Clinical The secondary clinical outcome measures cover multiple domains of the International Classification of Functioning, Disability and Health: 47 A. Activities and function: these will be assessed by administration of the following additional questionnaire: i. Disability of Arm, Shoulder and Hand (DASH) The DASH questionnaire measures the functional capability of the affected upper extremity and has good clinometric properties. 48 B. Personal factors: fatigue, pain, self-efficacy and patient activation are assessed using the following questionnaires: i. Checklist individual strength- subscale fatigue (CIS-fatigue) The CIS-fatigue measures experienced fatigue. 49 ii. McGill Pain Questionnaire (MPQ) The MPQ measures the pain experienced. It assesses the nature, intensity, location, course and effect of the pain on daily life. 50 iii. Self-efficacy for performing energy conservation strategies assessment (SEPECSA) The SEPECSA assesses how the patients perceive their ability to apply energy conservation strategies to their daily lives. 51 iv. Pain self-efficacy questionnaire (PSEQ) The PSEQ assesses the confidence that people with ongoing pain have in performing activities while being in pain. 52 v. Patient activation measure (PAM) Patient’s activation with regard to their health and disease is assessed using the PAM. The PAMmeasures knowledge, skills and confidence in managing one’s own health and/or disease. 53
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