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Table 1 General characteristics and anthropometric measures of study population across tertiles of PRAL and NEAP

From: The association between dietary acid load and adiposity measures among children and adolescents

  Tertiles of PRAL Tertiles of NEAP
 < -4.30 mEq/d -4.30 to 2.22 mEq/d  > 2.22 mEq/d P value  < 37.40 mEq/d 37.40 to 44.86 mEq/d  > 44.86 mEq/d P value
N 152 152 152   152 152 152  
Age (y) 14.44 ± 2.16 14.11 ± 2.08 14.78 ± 1.98 0.018 14.33 ± 2.14 14.25 ± 2.03 14.75 ± 2.08 0.082
Sex     0.295     0.027
 Girls 98 (64.5) 80 (52.6) 89 (58.6)   103 (67.8) 80 (52.6) 84 (55.3)  
 Boys 54 (35.5) 72 (47.4) 63 (41.4)   49 (32.2) 72 (47.4) 68 (44.7)  
Physical activity     0.002     0.001
 Low 45 (29.6) 47 (30.9) 71 (46.7)   44 (28.9) 47 (30.9) 72 (47.4)  
 Moderate 107 (70.4) 105 (69.1) 81 (53.3)   108 (71.1) 105 (69.1) 80 (52.6)  
 High 0 (0.0) 0 (0.0) 0 (0.0)   0 (0.0) 0 (0.0) 0 (0.0)  
Weight (kg) 50.86 ± 11.95 50.83 ± 13.09 57.86 ± 16.88  < 0.001 49.70 ± 11.49 51.25 ± 12.82 58.60 ± 17.03  < 0.001
Height (cm) 158.14 ± 10.50 157.77 ± 11.28 160.11 ± 10.45 0.125 157.10 ± 9.98 158.46 ± 11.48 160.46 ± 10.62 0.024
BMI (kg/m2) 20.13 ± 3.51 20.19 ± 3.75 22.33 ± 4.91  < 0.001 19.95 ± 3.53 20.19 ± 3.57 22.52 ± 4.94  < 0.001
WHR 0.81 ± 0.05 0.81 ± 0.05 0.82 ± 0.06 0.056 0.81 ± 0.05 0.81 ± 0.05 0.83 ± 0.06 0.006
PBF (%) 23.82 ± 10.01 23.38 ± 9.43 26.91 ± 10.26 0.005 23.86 ± 10.06 23.13 ± 9.19 27.10 ± 10.34 0.001
BMI category      < 0.001      < 0.001
 Normal 127 (83.6) 115 (75.7) 95 (62.5)   127 (83.6) 120 (78.9) 90 (59.2)  
 Overweight/obese 25 (16.4) 37 (24.3) 57 (37.5)   25 (16.4) 32 (21.1) 62 (40.8)  
Abdominal obesity      < 0.001      < 0.001
 Normal 147 (96.7) 143 (94.1) 126 (82.9)   148 (97.4) 144 (94.7) 124 (81.6)  
 Obese 5 (3.3) 9 (5.9) 26 (17.1)   4 (2.6) 8 (5.3) 28 (18.4)  
Adiposity by PBF      < 0.001      < 0.001
 Normal 127 (83.5) 115 (75.6) 92 (60.5)   129 (84.9) 119 (78.3) 87 (57.2)  
 Obese 25 (16.5) 37 (24.4) 60 (39.5)   23 (15.1) 33 (21.7) 65 (42.8)  
PRAL (mEq/d) -11.65 ± 7.12 -0.78 ± 1.88 7.06 ± 3.78  < 0.001 -11.26 ± 7.51 -0.90 ± 2.87 6.80 ± 4.04  < 0.001
NEAP (mEq/d) 31.96 ± 4.70 41.28 ± 3.00 51.93 ± 6.88  < 0.001 31.72 ± 4.39 41.12 ± 2.07 52.33 ± 6.41  < 0.001
  1. Data are presented as mean ± standard deviation or number (percent)
  2. P-value obtained from chi-square analysis for categorical variables and analysis of variance (ANOVA) for continuous variables
  3. BMI Body Mass Index, WHtR Waist to Hip Ratio, PBF Percent of Body Fat, PRAL Potential Renal Acid Load, NEAP Net Endogenous Acid Production