Table 3 Convergent and discriminant validation measures
| Validation Measure | Response Options | Assessment Toola |
|---|---|---|
| Objective Measures (Convergent Validity) | ||
| 1. Total score on Berg Balance Scale | Score range from 0 to 56 | interRAI |
| 2. Unsteady gait |
▪ No ▪ Yes | interRAI |
| 3. Gait (path) | ▪ Straight without walking aid | VCA |
| 4. Gait (trunk) |
▪ No sway, flexion, use of arms, or walking aid ▪ Sway/Uses aid/Flexion/Spreads | VCA |
| 5. Gait (abnormality) |
▪ No ▪ Yes | VCA |
| 6. Evidence of lower extremity weakness |
▪ No ▪ Yes | VCA |
| 7. Postural stability test (nudged)b |
▪ Steady ▪ Staggers, grabs, catches self/Beings to fall | VCA |
| Self-Report Measures (Convergent Validity) | ||
| 1. Ability to walk 3 city blocks in last 3 days |
▪ No difficulty ▪ Difficulty/Unable | interRAI |
| 2. Difficulty with ordinary housework |
▪ No difficulty ▪ Some/Great difficulty | interRAI |
| 3. Limits going outdoors (fear of falling) |
▪ No ▪ Yes | interRAI |
| 4. Pain affects mobility |
▪ No ▪ Yes | VCA |
| Objective Measures (Discriminant Validity) | ||
| 1. Vision |
▪ Adequate ▪ Impaired/Moderately, highly or severely impaired | interRAI |
| 2. Skin problems |
▪ No ▪ Yes | interRAI |
| 3. Evidence of hearing deficit |
▪ No ▪ Yes | VCA |
| Self-Report Measures (Discriminant Validity) | ||
| 1. Home environment hazardous |
▪ No ▪ Yes | interRAI |
