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Table 3 Prevalence and adjusted 1 odds ratios of Impaired fasting glucose by category of body mass index (BMI) after stratification by tertile of serum γ-glutamyltransferase (GGT)

From: Different associations between obesity and impaired fasting glucose depending on serum gamma-glutamyltransferase levels within normal range: a cross-sectional study

 

BMI

P trend

P interaction

<23 kg/m2

23-25 kg/m2

>25 kg/m2

 

Men (n = 2424)

    

0.032

GGT tertile 1 (0 ~ 22 U/L)

     

  Case/participants

95/447

45/204

44/171

0.193

 

  Prevalence

17.2%

21.2%

23.4%

 

  Adjusted OR (95% CI)

reference

1.2(0.7-2.1)

1.4(0.8-2.3)

 

GGT tertile 2 (23 ~ 34 U/L)

     

  Case/participants

66/297

71/213

103/290

0.001

 

  Prevalence (%)

19.8%

31.4%

32.4%

 

  Adjusted OR (95% CI)

reference

1.9(1.2-3.1)

2.1(1.3-3.3)

 

GGT tertile 3 (35 ~ 73 U/L)

     

  Case/participants

54/233

101/238

160/331

<0.001

 

  Prevalence (%)

20.2%

42.0%

49.5%

 

  Adjusted OR (95% CI)

reference

2.9(1.8-4.8)

4.0(2.5-6.4)

 

Women (n = 3652)

    

0.059

GGT tertile 1 (0 ~ 14 U/L)

     

  Case/participants

73/678

35/352

43/243

0.100

 

  Prevalence (%)

9.8%

9.5%

15.8%

 

  Adjusted OR (95% CI)

reference

0.9(0.6-1.5)

1.7(1.0-2.8)

 

GGT tertile 2 (15 ~ 19 U/L)

     

  Case/participants

66/491

65/262

95/348

<0.001

 

  Prevalence (%)

13.2%

24.1%

26.0%

 

  Adjusted OR (95% CI)

reference

2.1(1.2-3.5)

2.2(1.4-3.5)

 

GGT tertile 3 (20 ~ 48 U/L)

   

<0.001

 

  Case/participants

72/401

94/324

215/553

 

  Prevalence (%)

16.2%

29.7%

37.4%

 

  Adjusted OR (95% CI)

reference

2.1(1.3-3.2)

3.1(2.1-4.5)

 
  1. All statistics, except the numbers of case/participants, are results from complex survey data analyses.
  2. 1Adjustment for age, smoking, alcohol intake, and physical activity.