Table 2.
The Associations Between Objectively Measured Physical Activity and Subsequent Health Care Utilization
| Odds Ratio For Hospitalization (95% CI) | Facility Days Rate Ratio Among Those Hospitalized (95% CI) | ||||||
|---|---|---|---|---|---|---|---|
| Measure | Unit | Base Modela | Model 1b | Model 2c | Base Modela | Model 1b | Model 2c |
| Step count | SD = 3,092 increase | 0.66 (0.54, 0.81) | 0.79 (0.65, 0.96) | 0.76 (0.62, 0.94) | 0.82 (0.68, 1.00) | 0.93 (0.75, 1.14) | 0.96 (0.76, 1.21) |
| Total Energy Expenditure | SD = 442 kcal increase | 0.76 (0.63, 0.91) | 0.84 (0.70, 1.01) | 0.82 (0.68, 1.00) | 0.84 (0.66, 1.07) | 0.94 (0.75, 1.19) | 0.97 (0.76, 1.25) |
| Active Energyd Expenditure | SD = 333 kcal increase | 0.79 (0.66, 0.95) | 0.92 (0.77, 1.09) | 0.90 (0.76, 1.08) | 0.90 (0.72, 1.11) | 0.92 (0.75, 1.13) | 0.95 (0.75, 1.20) |
| Time Sedentary (nonsleep with METs ≤ 1.5) | SD = 110 min decrease | 0.89 (0.75, 1.05) | 0.94 (0.80, 1.12) | 0.94 (0.79, 1.11) | 0.94 (0.78, 1.12) | 0.89 (0.75, 1.05) | 0.90 (0.76, 1.07) |
| Time Light/Moderate/Vigorous Activity (METS > 1.5) | SD = 92 min increase | 0.79 (0.65, 0.96) | 0.93 (0.77, 1.12) | 0.92 (0.75, 1.12) | 0.87 (0.72, 1.06) | 0.91 (0.76, 1.10) | 0.93 (0.76, 1.15) |
| Time Moderate or Vigorous Physical Activity (METs ≥ 3) | SD = 60 min increase | 0.81 (0.67, 0.98) | 0.95 (0.80, 1.13) | 0.94 (0.78, 1.13) | 0.86 (0.70, 1.07) | 0.88 (0.72, 1.07) | 0.89 (0.71, 1.12) |
| PASE score (self-reported) | SD = 66 point increase | 0.86 (0.72, 1.02) | 1.01 (0.85, 1.21) | NA | 0.86 (0.71, 1.04) | 0.92 (0.77, 1.11) | NA |
Note: CI = Confidence interval; METs = Metabolic Equivalent of Tasks; PASE = Physical Activity Scale for the Elderly.
aBase model adjusted for age and clinical site. bModel 1 adjusted for base model variables and body mass index, marital status, geriatric depression score, Elixhauser comorbidity score, modified Mini-Mental State examination, prior hospitalization. cModel 2 adjusted for model 1 variables and PASE. dActive energy = 0.9 × total energy-RMR, RMR = Resting metabolic rate.