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Table 4 The combined effect of waist circumference level and fasting glucose level on the risk of IGT a

From: Metabolic syndrome and the early detection of impaired glucose tolerance among professionals living in Beijing, China: a cross sectional study

Waist circumference level FPG <5.6 mmol/l (n = 657) FPG: 5.6-6.0 mmol/l (n = 183) FPG ≥6.1 mmol/l (n = 88)
n1 Prevalence of IGT (%) n2 Prevalence of IGT (%) n3 Prevalence of IGT (%)
1 350 34 (9.7) 66 20 (31.3) 23 12 (43.5)
2 218 52 (23.9) 77 26 (33.8) 33 19 (57.6)
3 89 23 (25.8) 40 19 (47.5) 32 22 (59.4)
  1. aTrend P < 0.0001. IGT: impaired glucose tolerance; FPG: fasting plasma glucose. Waist circumference (WC) level: 1: WC <90 cm for men and <80 cm for women; 2: WC ≥90 cm but <102 cm for men, and ≥80 cm but <88 cm for women; 3: WC ≥102 cm for men and ≥88 cm for women.