Table 2 Mean and median values of the casual urine Na/K ratio by sex and age groups, NIPPON DATA2010

From: Practical use and target value of urine sodium-to-potassium ratio in assessment of hypertension risk for Japanese: Consensus Statement by the Japanese Society of Hypertension Working Group on Urine Sodium-to-Potassium Ratio

 

Men

Women

All

n = 1198

N = 1599

 Mean (SD)

4.2 (2.5)

4.3 (2.4)

 Median (25%tile, 75%tile)

3.8 (2.7, 5.2)

3.8 (2.6, 5.3)

20–39 years

n = 159

n = 292

 Mean (SD)

4.4 (2.3)

4.3 (2.6)

 Median (25%tile, 75%tile)

4.1 (2.8, 5.4)

3.7 (2.3, 5.5)

40–49 years

n = 125

n = 173

 Mean (SD)

4.4 (3.1)

4.1 (2.3)

 Median (25%tile, 75%tile)

3.8 (2.8, 5.5)

3.7 (2.4, 5.2)

50–59 years

n = 187

n = 276

 Mean (SD)

4.4 (2.3)

4.4 (2.3)

 Median (25%tile, 75%tile)

3.9 (2.8, 5.7)

3.8 (2.7, 5.4)

60–69 years

n = 365

n = 425

 Mean (SD)

4.2 (2.4)

4.4 (2.5)

 Median (25%tile, 75%tile)

3.7 (2.7, 5.3)

3.9 (2.8, 5.4)

70 years or older

n = 362

n = 433

 Mean (SD)

4.0 (2.4)

4.0 (2.3)

 Median (25%tile, 75%tile)

3.6 (2.5, 4.8)

3.7 (2.5, 5.2)

  1. Na/K ratio was assessed based on the single measurement of casual urine samples
  2. Na/K, sodium-to-potassium; SD, standard deviation
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