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Table 2 Anthropometric characteristics in different age groups

From: Metabolic syndrome and its components in Polish women of childbearing age: a nationwide study

Parameter All Age (years) P value P for trend
20–29 30–39 40–49
BMI (kg/m2) n = 1518      
 x ± SD 24.9 ± 5.2 22.9 ± 4.1 24.7 ± 4.9 26.5 ± 5.6 <0.0001 <0.0001
 Median 23.8 22.0 23.6 25.3   
BMI (%)
 <18.5 kg/m2 4.3 8.4 4.7 1.1 <0.0001 <0.0001
 18.5–24.9 kg/m2 55.5 66.0 58.0 45.7 <0.0001
 25–29.9 kg/m2 25.2 17.5 24.1 31.5 <0.0001
 ≥30 kg/m2 15.0 8.1 13.2 21.7 <0.0001
Waist (cm) N = 1564      
 x ± SD 82.2 ± 12.1 77.3 ± 11.2 82.4 ± 12.1 85.3 ± 11.6 <0.0001 <0.0001
 Median 80.0 75.3 80.0 83.0
Waist (%)a
 <80 cm 46.9 65.0 46.6 34.8   
 ≥ 80 cm 53.1 35.0 53.4 65.2 <0.0001 <0.0001
Waist (%)b
 <88 cm 70.4 82.7 70.2 62.3   
 ≥ 88 cm 29.6 17.3 29.8 37.7 <0.0001 <0.0001
  1. aaccording to the IDF criteria, baccording to the ATP III criteria