TABLE 2.
Association of usual 24-h sodium excretion (independent variable) with BMI and WC (dependent variable) among US adults aged 20–69 y, NHANES 20141
| BMI | WC | |||||
|---|---|---|---|---|---|---|
| Usual sodium excretion | β-Coefficient | (95% CI) | P | β-Coefficient | (95% CI) | P |
| Model 1 | 3.8 | (2.8, 4.8) | <0.001 | 9.1 | (6.6, 11.6) | <0.001 |
| Model 2 | 3.8 | (2.8, 4.8) | <0.001 | 9.2 | (6.9, 11.5) | <0.001 |
| Model 3 | 3.8 | (2.8, 4.8) | <0.001 | 9.2 | (6.9, 11.5) | <0.001 |
| Model 4 | 3.8 | (2.8, 4.7) | <0.001 | 9.2 | (7.0, 11.4) | <0.001 |
The unweighted sample size in each model is 730. β-Coefficients for usual sodium excretion represent change in BMI or WC (centimeters) associated with per 1000-mg/d higher usual sodium excretion. Model 1 adjusted for age, sex, and race–Hispanic origin; model 2 adjusted for age, sex, race-Hispanic origin, physical activity, alcohol consumption, smoking status, and educational attainment; model 3 adjusted for covariates of model 2 plus usual total energy intake; model 4 adjusted for covariates of model 2 plus usual sugar-sweetened beverage intake. All tests were 2-sided and based on Satterthwaite adjusted F test. WC, waist circumference.