Table 2 Longitudinal beta regression model for the proportion of balance impairments during the first year after stroke (n = 93)
From: A cohort study on longitudinal changes in postural balance during the first year after stroke
|  | Standardized β coefficient | Standard error | 95% CI | P-value |
|---|---|---|---|---|
Intercept | -3.5 | 0.8 | -5.1 to -1.9 |  < 0.001 |
Age | 0.03 | 0.008 | 0.016 to 0.05 |  < 0.001 |
Cognition | -0.06 | 0.02 | -0.1 to -0.02 | 0.005 |
Severity (mild stroke as reference) | ||||
 Moderate | 1.5 | 0.21 | 1.11 to 1.96 |  < 0.001 |
Time (baseline as reference) | ||||
 Within 1 mo | -0.16 | 0.13 | -0.42 to 0.11 | 0.25 |
 2 mos | -0.44 | 0.14 | -0.72 to -0.17 | 0.002 |
 3 mos | -0.5 | 0.14 | -0.78 to -0.23 |  < 0.001 |
 1-year | -0.18 | 0.13 | -0.45 to 0.008 | 0.17 |
Interaction- Severity × Time (Mild × baseline as reference) | ||||
 Moderate × Within 1 mo | -0.51 | 0.17 | -0.85 to -0.17 | 0.004 |
 Moderate × 2 mos | -0.44 | 0.18 | -0.79 to -0.1 | 0.01 |
 Moderate × 3 mos | -0.61 | 0.18 | -0.96 to -0.26 |  < 0.001 |
 Moderate × 1-year | -0.65 | 0.17 | -0.99 to -0.31 |  < 0.001 |