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Table 3 Age, sex and educational levela as predictors of sodium and potassium excretion, in multiple linear regression

From: Sodium and potassium excretion in an adult Caribbean population of African descent with a high burden of cardiovascular disease

  Beta (95% CIs) P value
Sodium (mg per day)
 Age (years) −7.4 (−26.3, 11.4) 0.431
 Sex (male vs. female) 428.0 (91.3, 764.6) 0.014
 Education (tertiary vs. less than) −24.7 (− 394.1, 344.7) 0.893
Potassium (mg per day)
 Age (years) 13.3 (5.3, 21.3) 0.002
 Sex (male vs. female) 162.3 (−11.8, 336.4) 0.067
 Education (tertiary vs. less than) 183.5 (24.9, 342.1) 0.024
Sodium-to-potassium ratio
 Age (years) −0.032 (− 0.052, − 0.012) 0.002
 Sex (male vs. female) 0.331 (− 0.019, 0.682) 0.063
 Education (tertiary vs. less than) −0.427 (− 0.832, − 0.022) 0.039
  1. aAnalyses by age, sex and educational level entered together