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. 2022 Oct 28;11(4):277–288. doi: 10.7762/cnr.2022.11.4.277

Table 4. Dietary intakes by median of PRAL in case and control groups.

Variable Case (RA) Control (Healthy)
PRAL < −7.64 PRAL > −7.64 p value* PRAL < −7.64 PRAL > −7.64 p value*
Energy (kcal/day) 2,181.04 ± 688.50 2,221.20 ± 856.35 0.84 2,450.60 ± 1,029.00 2,306.00 ± 873.00 0.27
Carbohydrate (g/day) 343.17 ± 99.00 340.62 ± 149.01 0.94 398.10 ± 177.25 357.58 ± 135.22 0.06
Protein (g/day) 73.04 ± 26.91 78.25 ± 30.93 0.50 78.74 ± 38.81 80.76 ± 36.60 0.69
Fat (g/day) 64.08 ± 27.29 65.28 ± 25.50 0.86 67.74 ± 28.23 64.80 ± 29.22 0.45
Calcium (mg/day) 1,075.12 ± 423.20 1,156.08 ± 547.71 0.54 1,226.41 ± 652.12 1,201.94 ± 569.44 0.70
Magnesium (mg/day) 315.00 ± 109.64 265.13 ± 107.27 0.09 340.77 ± 158.73 273.13 ± 107.94 0.001
Phosphorus (mg/day) 1,058.55 ± 383.80 1,028.51 ± 419.35 0.70 1,123.45 ± 515.27 1,062.44 ± 467.06 0.36
Potassium (mg/day) 2,374.40 ± 1,232.80 2,469.70 ± 981.40 0.003 3,692.90 ± 1,634.50 2,493.50 ± 1,042.30 0.001
Sodium (mg/day) 4,138.90 ± 1,570.20 3,847.30 ± 1,469.30 0.40 4,519.40 ± 2,242.90 4,277.60 ± 2,025.90 0.40
Cholesterol (mg/day) 218.60 ± 126.40 231.28 ± 146.40 0.73 231.00 ± 143.56 242.86 ± 148.67 0.50
Fiber (g/day) 23.98 ± 8.44 19.38 ± 8.25 0.04 27.29 ± 14.48 19.45 ± 8.77 0.001
Omega-3 (mg/day) 0.03 ± 0.02 0.03 ± 0.02 0.57 0.03 ± 0.03 0.04 ± 0.03 0.03
Red Meat (g/day) 8.37 ± 9.86 13.97 ± 20.88 0.21 12.75 ± 18.37 12.03 ± 14.44 0.75
Dairy (g/day) 330.12 ± 292.93 336.14 ± 282.69 0.93 475.42 ± 486.00 359.72 ± 415.67 0.06
Vegetable (g/day) 107.62 ± 34.79 96.52 ± 35.49 0.24 120.38 ± 51.97 102.58 ± 44.62 0.007
Fruit (g/day) 140.11 ± 46.75 129.87 ± 48.87 0.43 158.64 ± 70.38 137.45 ± 61.29 0.02

PRAL, potential renal acid load; RA, rheumatoid arthritis.

*Calculated by t-test.