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Table 1 Demographic and metabolic characteristics of 9059 participants with monophasic versus multiphasic OGTT glucose response curve and 1150 participants with biphasic versus triphasic

From: The shape of the glucose response curve during an oral glucose tolerance test heralds β–cell function in a large Chinese population

Variables

Monophasic group

(n = 7909)

Multiphasic group

(n = 1150)

P value

Biphasic group

(n = 548)

Triphasic group

(n = 602)

P value

Age (years)

38.6 ± 13.6

35.4 ± 13.5

< 0.001

35.1 ± 13.7

35.8 ± 13.2

0.391

Sex (male/female), n%

2100 (26.6)/5809 (73.4)

219 (19.0)/931 (81.0)

< 0.001

106 (19.3)/442 (80.7)

113 (18.8)/489 (81.2)

0.805

FBG (mmol/L)

5.6 ± 13.5

5.2 ± 0.6

< 0.001

5.2 ± 0.6

5.2 ± 0.6

0.189

30 min GLU (mmol/L)

9.5 ± 2.0

8.3 ± 1.6

< 0.001

8.4 ± 1.6

8.2 ± 1.6

<0.001

2 h GLU (mmol/L)

8.2 ± 3.2

6.3 ± 2.0

< 0.001

5.4 ± 1.8

7.2 ± 1.9

<0.001

FINS

14.8 ± 8.7

13.5 ± 7.9

< 0.001

13.2 ± 8.4

13.7 ± 7.5

0.328

30 min INS

97.7 ± 59.6

123.5 ± 67.1

< 0.001

105.6 ± 62.0

139.7 ± 67.5

<0.001

2 h INS

106.9 ± 66.9

76.8 ± 57.8

< 0.001

54.7 ± 43.2

96.8 ± 62.0

<0.001

Glycemic status(%)

 NGT

4253 (53.8)

903 (78.5)

 

486 (88.7)

417 (69.3)

 

 IFG/IGT/IFG + IGT

2362 (29.9)

206 (17.9)

< 0.001

50 (9.1)

156 (25.9)

<0.001

 DM

1294 (16.3)

41 (3.6)

 

12 (2.2)

29 (4.8)

 

Glucose AUC (mg·dL −1· h −1)

1473.5 ± 437.1

1181.2 ± 257.8

< 0.001

1180.0 ± 259.7

1182.4 ± 256.2

0.876

Insulin AUC (mg·dL −1· h − 1)

16,299.7 ± 8297.5

13,968.7 ± 7498.6

< 0.001

13,182.2 ± 7277.7

14,684.7 ± 7629.9

0.001

HOMA-IR

3.8 ± 2.6

3.1 ± 2.0

< 0.001

3.1 ± 2.1

3.2 ± 1.8

0.595

Matsuda Index

2.9 ± 1.9

3.8 ± 2.5

< 0.001

4.0 ± 2.7

3.6 ± 2.3

0.018

Insulinogenic index

25.1 ± 23.0

42.9 ± 37.7

< 0.001

36.0 ± 35.9

49.1 ± 38.2

<0.001

Disposition index

12.7 ± 14.1

16.6 ± 17.8

< 0.001

13.7 ± 15.4

19.2 ± 19.4

<0.001

  1. Values are reported as the mean ± SD or n (%). FBG fasting blood glucose, 30 min GLU glucose at 30 min, 2 h GLU glucose at 120 min, FINS fasting insulin, 30 min INS insulin at 30 min, 2 h INS insulin at 1200 min, NGT normal glucose tolerance, IFG impaired fasting glucose, IGT impaired glucose tolerance, DM diabetes mellitus, AUC area under the curve