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Table 2 Metabolic syndrome components and prevalence of metabolic syndrome and its risk factors by categories of dietary total antioxidant capacity: Tehran Lipid and Glucose Study¹

From: Dietary total antioxidant capacity and the occurrence of metabolic syndrome and its components after a 3-year follow-up in adults: Tehran Lipid and Glucose Study

  ( n  = 1938)
 Q1   Q2   Q3   Q4  P2
Total antioxidant capacity      
Range < 842 842-958 959-1080 > 1080  
Median 764 906 1014 1161  
Waist circumference (cm) 90 ± 0.5 89.0 ± 0.5 89 ± 0.5 89 ± 0.5 0.44
Fasting blood glucose (mg/dl) 93 ± 1.1 91 ± 1.1 91 ± 1.1 90 ± 1.1 0.46
Serum triglycerides (mg/dl) 148 ± 3.7 142 ± 3.7 143 ± 3.7 137 ± 3.7 0.24
HDL-c (mg/dl) 42.2 ± 0.4 41.8 ± 0.4 42.2 ± 0.4 42.5 ± 0.4 0.71
SBP (mmHg) 112 ± 0.6 112 ± 0.6 111 ± 0.6 111 ± 0.6 0.75
DBP (mmHg) 74 ± 0.4 74 ± 0.4 73 ± 0.4 73 ± 0.4 0.12
Abdominal obesity (%) 44.2 43.7 46.5 38.8 0.10
Hypertriglyceridemia (%) 34.5 31.8 30.7 31.1 0.57
Low HDL-c (%) 49.2 50.9 51.2 47.6 0.65
Hyperglycemia (%) 22.7 25.2 24.1 28.0 0.28
Hypertension (%) 12.6 17.4 14.5 15.5 0.20
Metabolic syndrome (%) 24.6 27.5 27.4 25.9 0.69
  1. 1 Data are age-adjusted mean ± SEM.
  2. 2P for trend across quartiles of dietary phytochemical index was calculated using Chi square test or linear regression models with adjustment for sex and age.