Table 2.
Associations between dependent variables for each test condition.
| Biosway SI | COM SI/BOS | COM velocity/BOS | |||
|---|---|---|---|---|---|
| C1 (eyes open, firm surface, double leg) | Biosway SI | τ b value (N = 40) | — | 0.818 | 0.411 |
| p value | — | <0.0001 | <0.001 | ||
| C2 (eyes closed, firm surface, double leg) | Biosway SI | τ b value (N = 40) | — | 0.751 | 0.355 |
| p value | — | <0.0001 | <0.01 | ||
| C3 (eyes open, foam surface, double leg) | Biosway SI | τ b value (N = 40) | — | 0.781 | 0.382 |
| p value | — | <0.0001 | <0.001 | ||
| C4 (eyes closed, foam surface, double leg) | Biosway SI | τ b value (N = 40) | — | 0.590 | 0.433 |
| p value | — | <0.0001 | <0.0001 | ||
| C5 (eyes open, foam surface, right single leg) | SBMA score | τ b value (N = 37) | −0.353 | −0.086 | −0.534 |
| p value | <0.01 | 0.456 | <0.0001 | ||
| Biosway SI | τ b value (N = 38) | — | 0.209 | 0.304 | |
| p value | — | 0.068 | <0.01 | ||
| C6 (eyes open, foam surface, left single leg) | SBMA score | τ b value (N = 37) | −0.441 | −0.170 | −0.545 |
| p value | <0.001 | 0.139 | <0.0001 | ||
| Biosway SI | τ b value (N = 38) | — | 0.409 | 0.575 | |
| p value | — | <0.001 | <0.0001 | ||
| C7 (eyes closed, firm surface, right single leg) | SBMA score | τ b value (N = 38) | −0.439 | −0.319 | −0.632 |
| p value | <0.001 | <0.01 | <0.0001 | ||
| Biosway SI | τ b value (N = 39) | — | 0.325 | 0.469 | |
| p value | — | <0.01 | <0.0001 | ||
| C8 (eyes closed, firm surface, left single leg) | SBMA score | τ b value (N = 39) | −0.305 | −0.384 | −0.570 |
| p value | <0.01 | <0.01 | <0.0001 | ||
| Biosway SI | τ b value (N = 40) | — | 0.302 | 0.483 | |
| p value | — | <0.01 | <0.0001 | ||
| C9 (eyes open, firm surface, anterior posterior sway) | SBMA score | τ b value (N = 39) | 0.070 | 0.099 | 0.131 |
| p value | 0.529 | 0.377 | 0.241 | ||
| Biosway SI | τ b value (N = 40) | — | −0.027 | 0.119 | |
| p value | — | 0.807 | 0.278 | ||
| C10 (eyes open, firm surface, medial lateral sway) | SBMA score | τ b value (N = 39) | 0.087 | 0.138 | 0.192 |
| p value | 0.439 | 0.217 | 0.086 | ||
| Biosway SI | τ b value (N = 40) | — | 0.249 | 0.341 | |
| p value | — | <0.05 | <0.01 | ||
Kendall's tau-b correlation coefficient (τb) and p value with Hochberg α adjustments (significant correlations are presented in bold) for correlations between SWAY Balance Mobile Application (SBMA) scores and Biosway Sway Index (SI), SBMA scores and Center of Mass (COM) Balance indices (COM SI/Base of Support (BOS) and COM velocity/BOS), and Biosway SI and COM Balance indices. A larger velocity and SI score represent more postural sway. A larger SBMA score represents less postural sway.