Average usual intake of sodium, potassium and sodium-to-potassium ratio among U.S. adults aged ≥20 years who were not taking antihypertensive medication, by hypertension status and selected characteristics, NHANES 2005–2010.

1A asterisk indicates p value<0.05 for the comparison between the hypertensive and non-hypertensive groups.
2The exclusion criteria and definitions for covariates were the same as in Table 1.