Cox regression analysis of variables for the incidence of functional disability
| HR (95% CI) | P value | |
| Age, 5-year increase | 2.48 (2.23 to 2.75) | <0.001 |
| Male sex | 1.25 (0.90 to 1.74) | 0.178 |
| Body mass index | ||
| <18.5 | 1.63 (1.02 to 2.63) | 0.043 |
| 18.5–24.9 | Ref | |
| ≥25.0 | 1.01 (0.67 to 1.52) | 0.962 |
| Diabetes | 1.74 (1.12 to 2.68) | 0.013 |
| Hypertension | 1.23 (0.89 to 1.70) | 0.208 |
| Dyslipidemia | 1.00 (0.71 to 1.41) | 0.997 |
| No physical activity habit | 1.83 (1.27 to 2.65) | 0.001 |
| Current smoking | 1.35 (0.77 to 2.38) | 0.293 |