Table 2.
Instruments and constructs included in the convergent and discriminant analysis
| Surgical priority instruments | ||||
| Hip/Knee arthroplasty | Cataract surgery | |||
| Instruments | Convergent | Discriminant | Convergent | Discriminant |
| Doctors' opinions (VAS) | Yes | No | Yes | No |
| Patients' perceptions on difficulty | Yes | No | Yes | No |
| WOMAC | Yes | No | No | No |
| VF-14 | No | No | Yes | No |
| HUI31 | -Overall score -Pain, Ambulation |
Vision, Emotion, Dexterity, Hearing, Cognition | -Overall score -Vision, Ambulation |
Pain, Emotion, Anxiety/depression, Dexterity, Hearing, Cognition |
| EQ-5D | -Overall score -Pain, Daily activities, Mobility, Self-care |
Anxiety/depression | -Overall score -Daily activities, Mobility |
Pain, Anxiety/Depression, Self-care |
VAS: visual analogue scale; WOMAC: Western Ontario McMaster Osteoarthritis Index; VF-14: Visual Function Index VF-14; HUI3: Health Utilities Index Mark 3.
1 The speech dimension was not included in the analysis as none of the patients had difficulty with it.