TABLE 2.
Regression coefficients (β) and 95% CIs of salt intake associated with BMI1
| Model 12 | Model 23 | Model 34 | ||||||
|---|---|---|---|---|---|---|---|---|
| Salt intake, g/d | BMI, kg/m2 | β (95% CI) | P value | β (95% CI) | P value | β (95% CI) | P value | |
| Japan | 11.6 ± 3.3 | 23.4 ± 2.9 | 0.28 (0.23, 0.33) | <0.0001 | 0.28 (0.23, 0.33) | <0.0001 | 0.28 (0.23, 0.34) | <0.0001 |
| China | 13.3 ± 5.9 | 23.1 ± 3.4 | 0.11 (0.06, 0.16) | <0.0001 | 0.11 (0.06, 0.15) | <0.0001 | 0.10 (0.05, 0.14) | 0.0001 |
| United | 8.5 ± 2.9 | 27.5 ± 4.6 | 0.40 (0.25, 0.55) | <0.0001 | 0.41 (0.27, 0.56) | <0.0001 | 0.42 (0.27, 0.56) | <0.0001 |
| Kingdom | ||||||||
| United States | 9.5 ± 3.5 | 28.9 ± 5.9 | 0.57 (0.50, 0.64) | <0.0001 | 0.53 (0.46, 0.60) | <0.0001 | 0.52 (0.45, 0.59) | <0.0001 |
| All | 10.6 ± 4.2 | 26.4 ± 5.5 | 0.36 (0.32, 0.40) | <0.0001 | 0.35 (0.31, 0.38) | <0.0001 | 0.34 (0.30, 0.38) | <0.0001 |
1
Values are mean ± SD unless otherwise indicated. β (95% CI) was calculated by general linear models.
2
Model 1 adjusted for age, gender, and sample center.
3
Model 2 further adjusted for smoking status, drinking status, years of education, and physical activity in leisure time.
4
Model 3 further adjusted for total energy intake and dietary fiber intake.