Table 3.
Definitions for SoA
| Terms | Definitions | |
|---|---|---|
| Time Point | tx | Time at initial contact via email with PIS, CF, and eligibiility screen. If a patient is eligible and consents, allocation will immediately follow this time. |
| t0 | Time at allocation with initial concurrent assessments. | |
| t1 | Immediately after allocation, for prognostic tool use in TAU group. | |
| t2 | 6 weeks after initial assessment (t0) | |
| t3 | 12 weeks after initial assessment (t0) | |
| t4 | 6 months after initial assessment (t0) | |
| ty | Time at study closure for individual participant. This should be equal to t4 if all assessments are completed on schedule. | |
| Baseline Questionnaire | Questionnaire for all patients who have been allocated in the study. Same for all groups. Captures basic demographic data as well as questions about previous knee treatment and surgery. This section will also capture baseline health-related quality of life through the VR-12 and EQ-5D-3L. | |
| Wilingness for Surgery | This assessment asks the question "Are your knee symptoms so bothersome that you wish to undergo surgery if medically fit to do so?" Yes / No. If yes, "In what time frame are you willing to have surgery?" [Time in months]. | |
| Already Proceeded with Surgery | This assessment asks the question "Have you already received a TKA for your knee symptoms?" Yes / No. The purpose for this assessment is to 1) check if the patient has undergone TKA, and 2) outcome aligns with their willingness for surgery response. | |
| Qualitative Questionnaires | This assessment consists of K-DQI (decision quality) and SURE (decisional conflict) tools. | |
PIS participant information sheet, CF consent form, TKA total knee arthroplasty, OA osteoarthritis, VR-12 Veterans-RAND 12, EQ-5D-3L EuroQol 5 Dimensions 3 Levels, K-DQI Knee Decision Quality Instrument, SURE decisional conflict screening tool