Table 2.
Association of BMI and lower extremity performance with life-space restriction (cross-sectional analysis)
| Model 1 | Model 2 | Model 3a | Model 4a | Model 5a | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PR | 95% CI | PR | 95% CI | PR | 95% CI | PR | 95% CI | PR | 95% CI | |
| Single association | ||||||||||
| BMI | ||||||||||
| < 23 | 1.36 | (0.93, 1.98) | 1.03 | (0.74, 1.44) | ||||||
| 23–25 | 1.00 | 1.00 | ||||||||
| 25–30 | 1.21 | (0.86, 1.69) | 1.01 | (0.75, 1.36) | ||||||
| ≥ 30 | 1.68 | (1.16, 2.44) | 1.24 | (0.89, 1.73) | ||||||
| Lower extremity performance | ||||||||||
| Intact (SPPB 10–12) | 1.00 | 1.00 | ||||||||
| Impaired (SPPB 0–9) | 3.31 | (2.62, 4.18) | 2.58 | (2.05, 3.25) | ||||||
| Combined association | ||||||||||
| Intact LEP with BMI | ||||||||||
| < 23 | 1.15 | (0.60, 2.23) | 1.09 | (0.56, 2.11) | ||||||
| 23–25 | 1.00 | 1.00 | ||||||||
| 25–30 | 1.18 | (0.66, 2.11) | 1.19 | (0.67, 2.12) | ||||||
| ≥ 30 | 1.48 | (0.77, 2.82) | 1.43 | (0.76, 2.71) | ||||||
| Impaired LEP with BMI | ||||||||||
| < 23 | 3.03 | (1.73, 5.31) | 2.71 | (1.55, 4.74) | ||||||
| 23–25 | 3.14 | (1.74, 5.67) | 2.73 | (1.53, 4.89) | ||||||
| 25–30 | 2.89 | (1.68, 4.97) | 2.66 | (1.56, 4.53) | ||||||
| ≥ 30 | 3.55 | (2.02, 6.27) | 3.31 | (1.89, 5.81) | ||||||
| Use of a private car | ||||||||||
| Car driver | 1.00 | |||||||||
| Private car passenger | 2.07 | (1.39, 3.07) | ||||||||
| No use a private car | 2.15 | (1.41, 3.28) | ||||||||
n = 823
PR prevalence ratio, CI confidence interval, BMI body mass index, LEP lower extremity performance, SPPB short physical performance battery
aAdjusting for sex, age, chronic diseases, and education