Table 4.
Scoring distribution and data completeness of Activities-specific Balance Confidence scale (time 1 data)
| Items | Activity | Mean (SD) n = 97 a | Missing or invalid responses b | Corrected item-total correlations n = 82 c |
|---|---|---|---|---|
| 1. |
Walk around the house |
7.2 (2.7) |
5 |
0.84 |
| 2. |
Walk up or down stairs |
6.0 (3.4) |
6 |
0.90 |
| 3. |
Bend over and pick up a shoe from the floor |
6.4 (3.0) |
5 |
0.86 |
| 4. |
Reach for a small can off a shelf at eye level |
7.5 (2.8) |
6 |
0.80 |
| 5. |
Stand on your tiptoes and reach for something above your head |
6.1 (3.3) |
6 |
0.83 |
| 6. |
Stand on a chair and reach for something |
4.4 (3.8) |
9 |
0.80 |
| 7. |
Sweep or vacuum the floor |
6.3 (3.7) |
7 |
0.87 |
| 8. |
Walk to a taxi that is waiting by the sidewalk |
6.9 (3.3) |
6 |
0.89 |
| 9. |
Get into or out of a car |
6.7 (3.0) |
5 |
0.88 |
| 10. |
Cross a street |
6.6 (3.5) |
8 |
0.90 |
| 11. |
Step onto or off a curb |
6.8 (3.3) |
5 |
0.90 |
| 12. |
Walk on a street where people are rapidly passing |
6.8 (3.2) |
6 |
0.91 |
| 13. |
Others bump into you as you walk on the street |
5.9 (3.5) |
5 |
0.90 |
| 14. |
Travel by bus without a bag of groceries |
6.6 (3.8) |
13 |
0.89 |
| 15. |
Travel by bus with a bag of groceries |
6.1 (3.8) |
13 |
0.90 |
| 16. |
Walk on icy sidewalks |
3.7 (3.5) |
6 |
0.75 |
| Total score (n = 82) |
62.4 (29.6) |
|||
| Min-Max |
1–100 |
|||
| Skewness (SE) |
–0.45 (0.27) |
|||
| Floor/ceiling effects (%) | 0/4.9 | |||
SE = standard error.
aOne person left the questionnaire blank and four persons misunderstood the entire scale.
bMissing data includes the four persons who misunderstood the scale, but not the person who left it blank.
cFifteen persons did not answer all 16 items and did therefore not receive a total score.
Possible item score range 0–10, possible total score range 0–100, higher = better.