TABLE 2

Adjusted Associations Between Each 1000-mg/d Increase in Sodium Intake and SDS of BP Among US Children and Adolescents, Based on 2 Models, Overall and by Weight Status, NHANES 2003–2008

CharacteristicsSDS of SBPSDS of DBP
β-Coefficient (95% CI)P Valueβ-Coefficient (95% CI)P Value
All
 Model 10.121 (0.034 to 0.207).008−0.072 (−0.182 to 0.0374).190
 Model 20.097 (0.006 to 0.188).037−0.066 (−0.175 to 0.043).227
Weight status
 Normal wt
  Model 10.043 (−0.069 to 0.155).445−0.125 (−0.263 to 0.013).074
  Model 20.022 (−0.096 to 0.140).710−0.120 (−0.258 to 0.019).090
 Overweight/obese
  Model 10.197 (0.036 to 0.357).0170.015 (−0.178 to 0.209).875
  Model 20.141 (−0.010 to 0.298).0750.008 (−0.185 to 0.201).936
  • Model 1 adjusted for age, gender, race/ethnicity, and total energy intake. Model 2 adjusted for all factors in Model 1 plus weight status (normal, overweight, and obese except for the weight-stratified analyses for which we included BMI as a continuous variable), table-salt use, and estimated usual intake of potassium. P values for interactions between daily sodium intake and weight classification among normal-weight children were 0.922 for SBP and 0.204 for DBP; all adjusted P values derived from 2-tailed Satterthwaite adjusted F tests.