Table 4.
Demographic and/or adherence factors significantly associated with gait speed and SPPB score response categories for PA participants over time identified through ordinal logistic regression .
| Variable (SD) | OR (95% CI) of strong response vs. moderate and poor responses* |
|---|---|
| Gait speed | |
| Attendance (21.72) | 1.26 (1.10-1.45) |
| Age (5.22) | 0.80 (0.69-0.91) |
| Waist Circumference (15.41) | 0.83 (0.72-0.96) |
| Diastolic BP (9.79) | 1.16 (1.02-1.31) |
| SPPB score | |
| Attendance (21.72) | 1.26 (1.12-1.41) |
| Age (5.22) | 0.65 (0.58-0.74) |
| CESD score (7.70) | 0.82 (0.73-0.93) |
Values represent the odds ratio (OR) and 95% confidence interval (CI) for each predictive factor indicating likelihood of experiencing a strong response to the intervention
Relative to poor and moderate response categories according to ordinal logistic regression modeling adjusting for sex and clinical site and other selected covariates. The site effect is not shown. Response categories were chosen based on established clinically-meaningful cut-points67,68 and defined as strong (≥0.05 m/s Δ gait speed, >1 point increase in SPPB score), modest (−0.49-0.49 m/s, 0.999-1 points) or poor (≤−0.05 m/s, ≤−1 points). BP indicates blood pressure; SPPB, Short Physical Performance Battery; CESD, Center for Epidemiological Studies Depression Scale.