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Table 4 Dietary intake of minerals in AS and healthy groups

From: Effect of food intake and ambient air pollution exposure on ankylosing spondylitis disease activity

Minerals AS patients
N = 30 mean (SD)
Controls
N = 30 mean (SD)
P-value
t Test
Sodium (g/d) 2.497 (1.6) 2.00 (1.4) 0.25
Potassium (g/d) 2.80 (1.2) 1.86 (0.7) 0.002**
Calcium (mg/d) 962.34 (529.1) 608.12 (286.6) 0.003**
Iron (mg/d) 22.72 (18.1) 11.76 (6.0) 0.004**
Phosphorus (mg/d) 1237.63 (547.3) 937.08 (421.5) 0.029*
Magnesium (mg/d) 329.3 (186.6) 223.80 (114.7) 0.017*
Zinc (μg/d) 10.0 (4.1) 7.97 (3.2) 0.041*
Copper (mg) 1.42 (0.5) 1.10 (0.5) 0.029*
Selenium (ug) 135.87 (62.2) 103.26 (40.7) 0.029*
  1. *: P-value 0.01 to 0.05, **: P-value 0.001 to 0.01