Table 2 Overview of questionnaire used to assess the functional recovery, work ability and patients subjective experience on function pain and quality of life. The questionnaires will be completed at baseline, 8 weeks, 5 months and 1 year after treatment
Measures | Questionnaires | Scores | Reliability and validity | Population |
|---|---|---|---|---|
Physical function and symptoms | 0 (no disability) to 100 (most severe disability) | Cronbach α > or = 0.92 and an ICCa > or = 0.94. validity was established (r > or = 0.64 | Patients with various upper-limb conditions | |
Patients’ subjective experience of elbow surgery on elbow function, pain, and Quality of life | Oxford Elbow score [13] | 0 (unsatisfactory joint function)to 48 (satisfactory joint function) | Cronbach’s α coefficients for the function, pain and social-psychological domains respectively 0.90, 0.87 and 0.90,. ICC 0.87 for function, 0.89 for pain and 0.87 for social-psychological. | Patients after elbow trauma and surgery |
Functional recovery | The WORQ-UP questionnaire for the upper limb [14] | 0 (no disability) to 102 (most severe disability) | - | Patients with elbow complaints |
Pain and functional ability | The Dutch Patient-Rated Tennis Elbow Evaluation PRTEE-D [15] | Pain subscale (0 = no pain, 10 = worst imaginable). function subscale (0 = no difficulty, 10 = unable to do) | Crohnbach’s α 0.98 and 0.93 for the pain subscale and 0.97 for the function subscale. ICC 0.98 and 0.97 for pain and function scale | Patients with LE |
Work ability | The first question on work ability of the Work Ability Index amended for elbow pain “current work ability compared with the lifetime best regarding your elbow complaints”, [16,17,18] | 0 (completely unable to work) to 10 (work ability at its lifetime best) | Acceptable test-retest reliability and predictive validity for return to work | Construction workers with and without musculoskeletal complaints of the upper extremity, lower back, and lower extremity |
Generic measure of health gain, as a derivative of quality of life | Quality adjusted life years (EQ-5D/QALYs) [19] | a year of life lived in perfect health is worth 1 QALY and a year of life lived in a state of less than this perfect health is worth less than 1. | validated, no studies on reliability | General population sample |