| Model 1 | Model 2 | Model 3a | Model 4a | Model 5a | |||||
---|---|---|---|---|---|---|---|---|---|---|
HR | 95% CI | HR | 95% CI | HR | 95% CI | HR | 95% CI | HR | 95% CI | |
Single effect | ||||||||||
 BMI | ||||||||||
   < 23 | 1.19 | (0.72, 1.97) |  |  | 1.03 | (0.62, 1.70) |  |  |  |  |
  23–25 | 1.00 |  |  |  | 1.00 |  |  |  |  |  |
  25–30 | 1.21 | (0.80, 1.84) |  |  | 1.07 | (0.70, 1.62) |  |  |  |  |
   ≥ 30 | 1.73 | (1.05, 2.86) |  |  | 1.65 | (0.99, 2.75) |  |  |  |  |
 Lower extremity performance | ||||||||||
  Intact (SPPB 10–12) |  |  | 1.00 |  | 1.00 |  |  |  |  |  |
  Impaired (SPPB 0–9) |  |  | 2.44 | (1.80, 3.32) | 2.39 | (1.75, 3.27) |  |  |  |  |
Combined effect | ||||||||||
 Intact LEP with BMI | ||||||||||
   < 23 |  |  |  |  |  |  | 1.02 | (0.54, 1.93) | 1.00 | (0.53, 1.89) |
  23–25 |  |  |  |  |  |  | 1.00 |  | 1.00 |  |
  25–30 |  |  |  |  |  |  | 1.06 | (0.61, 1.84) | 1.06 | (0.61, 1.83) |
   ≥ 30 |  |  |  |  |  |  | 1.70 | (0.88, 3.29) | 1.78 | (0.92, 3.47) |
 Impaired LEP with BMI | ||||||||||
   < 23 |  |  |  |  |  |  | 2.40 | (1.16, 4.97) | 2.03 | (0.98, 4.22) |
  23–25 |  |  |  |  |  |  | 2.50 | (1.18, 5.29) | 1.91 | (0.90, 4.08) |
  25–30 |  |  |  |  |  |  | 2.57 | (1.46, 4.52) | 2.77 | (1.57, 4.87) |
   ≥ 30 |  |  |  |  |  |  | 3.79 | (1.84, 7.83) | 3.57 | (1.72, 7.38) |
  Use of a private car | ||||||||||
  Car driver |  |  |  |  |  |  |  |  | 1.00 |  |
  Private car passenger |  |  |  |  |  |  |  |  | 1.96 | (1.27, 3.01) |
  No use a private car |  |  |  |  |  |  |  |  | 1.51 | (0.87, 2.62) |