Table 6.
Further analyses: goodness of fit of negative binomial regression models
| Factors | Univariate | Multivariatea | |||||
|---|---|---|---|---|---|---|---|
| RR (95% CI) | P-value | AIC | RR (95% CI) | P-value | AIC | ΔAIC | |
| Frailty and physical function | |||||||
| Frailty (yes/no) | 4.10 (1.60–10.5) | 0.003 | 185 | 2.53 (0.96–6.70) | 0.060 | 149.6 | −19.1% |
| Daily steps (n°) | 0.99 (0.99–1.00) | 0.006 | 142.3 | 1.00 (0.99–1.00) | 0.036 | 113.2 | −20.4% |
| Daily sit to stands (n°) | 0.96 (0.93–0.99) | 0.042 | 146.7 | 0.99 (0.95–1.03) | 0.543 | 116.7 | − 20.4% |
| Handgrip (kg) | 0.94 (0.88–0.99) | 0.034 | 188.6 | 0.97 (0.91–1.03) | 0.330 | 151.8 | −19.5% |
| Gait speed (m/s) | 0.08 (0.01–0.62) | 0.016 | 176.3 | 0.14 (0.02–1.39) | 0.094 | 141.1 | −20.0% |
| TUG (s) | 1.16 (1.02–1.32) | 0.021 | 171.7 | 1.10 (0.95–1.27) | 0.226 | 138.5 | −19.3% |
| Cardiovascular function | |||||||
| Total-BEI (%) | 0.96 (0.93–0.98) | <0.001 | 150.8 | 0.96 (0.94–0.99) | 0.003 | 149.6 | −0.8% |
| CO (L/min) | 0.51 (0.27–0.98) | 0.043 | 168.6 | 0.58 (0.33–1.04) | 0.068 | 165.7 | −1.7% |
| OscDBP (mmHg) | 0.90 (0.83–0.98) | 0.010 | 144.1 | 0.92 (0.85–0.99) | 0.028 | 142.6 | −1.0% |
Abbreviations: RR rate ratio, CI confidence interval, AIC Akaike’s information criterion, TUG timed up and go test, Total-BEI total-events baroreceptor effectiveness index, CO cardiac output, OscDBP oscillometric diastolic blood pressure
aFrailty and physical function variables are adjusted by Total-BEI, cardiovascular function variables are adjusted by frailty