Table 5.
Significant Predictors of Change in SPPB Over 1 Year.
| Variables | OR | 95% CI | P value |
|---|---|---|---|
| A. Improvement in SPPB (≥1 point) | |||
| Weight, kg | 0.98 | 0.97-1.00 | .04 |
| Baseline SPPB | 0.83 | 0.75-0.93 | <.01 |
| Area under the ROC curve (95% CI): 0.707 (0.629-0.785) | |||
| B. Decline in SPPB (≥1 point) | |||
| eGFR (per unit increase) | 0.95 | 0.91-0.98 | <.01 |
| Diabetes | 3.57 | 1.68-7.63 | <.01 |
| Calcium (per 0.1-unit increase) | 1.39 | 1.12-1.73 | <.01 |
| PO4 (per unit increase) | 0.25 | 0.08-0.80 | .02 |
| Albumin (per unit increase) | 0.93 | 0.86-1.00 | .04 |
| Area under the ROC curve (95% CI): 0.746 (0.671-0.821) | |||
Note. Model selection methods used: stepwise Selection. Variables considered: exercise counseling/control group, age, sex, modality, race, weight, SBP, DPB, IHD, lung disease, CHF, PVD, cholesterol, stroke, diabetes, hypertension, arthritis, hemoglobin, creatinine, eGFR, calcium, PO4, albumin, physical activity change, baseline SPPB. SPPB = Short Physical Performance Battery; OR = odds ratio; CI = confidence interval; ROC = receiver operating characteristic; eGFR = estimated glomerular filtration rate; SBP = systolic blood pressure; DBP = diastolic blood pressure; IHD = ischemic heart disease; PVD = peripheral vascular disease; CHF = congestive heart failure; PO4 = phosphate.