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Table 4 Mean (± SD) of urinary Na, K and Na-to-K ratio across tertiles of dietary pattern scores

From: Urinary sodium-to-potassium ratio: a simple and useful indicator of diet quality in population-based studies

Dietary patterns Tertile 1 Tertile 2 Tertile 3 P-value
Traditional dietary pattern score
 Urinary Na (mmol/L) 137.6 ± 54.65 130.9 ± 55.59 125.8 ± 55.01 0.001
 Urinary K (mmol/L) 73.22 ± 36.32 75.52 ± 37.83 75.72 ± 37.94 0.430
 Urinary Na-to-K ratio 2.31 ± 1.43 2.12 ± 1.33 2.00 ± 1.19 0.001
Western dietary pattern score
 Urinary Na (mmol/L) 121.6 ± 53.72 133.2 ± 54.39 139.6 ± 56.23 0.001
 Urinary K (mmol/L) 74.70 ± 39.17 73.90 ± 36.39 75.85 ± 36.51 0.658
 Urinary Na-to-K ratio 2.02 ± 1.35 2.20 ± 1.35 2.21 ± 1.27 0.018
DASH dietary score
 Urinary Na (mmol/L) 140.5 ± 54.74 131.6 ± 54.90 122.3 ± 54.77 0.001
 Urinary K (mmol/L) 74.18 ± 36.16 75.04 ± 36.67 75.18 ± 39.24 0.881
 Urinary Na-to-K ratio 2.33 ± 1.43 2.11 ± 1.28 2.00 ± 1.24 0.001
Mediterranean dietary score
 Urinary Na (mmol/L) 136.5 ± 54.58 128.0 ± 54.79 128.2 ± 55.94 0.007
 Urinary K (mmol/L) 75.15 ± 38.79 75.04 ± 37.22 74.31 ± 36.60 0.905
 Urinary Na-to-K ratio 2.25 ± 1.41 2.08 ± 1.31 2.07 ± 1.25 0.016
  1. Data are mean ± SD
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