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Table 1 Clinical characteristics of the women with gestational diabetes and controls at index pregnancy and the follow-up study

From: Long-term changes in glucose metabolism after gestational diabetes: a double cohort study

 

GDM patients (n = 489)

Controls (n = 385)

 
 

Mean

SD

Mean

SD

P

Index pregnancy

     

Age at delivery (yrs)

32.0

5.9

29.6

5.3

<0.001

Parity

1.1

1.3

0.7

0.9

<0.001

Primipara/multipara (%)

36.6/63.4

54.5/45.6

<0.001

Waist (cm)

91.3

13.4

86.3

11.7

<0.001

BMI in the first trimester (kg/m2)

26.4

4.8

24.1

3.8

<0.001

Duration of the pregnancy (weeks)

39.3

1.5

39.5

1.7

0.095

Birth weight of the child (g)

3648

545

3579

570

0.065

Follow-up study*

     

Age at follow up (yrs)

37.8

7.2

38.4

6.3

0.200

Follow-up time (yrs)

6.0

4.4

9.0

5.5

<0.001

Family history of diabetes (%)

81.0

 

71.5

 

0.001

Current smoker (%)

18.8

 

13.6

 

0.040

BMI (kg/m2)

28.4

5.5

26.9

4.9

<0.001

HbA1c [mmol/mol (%)]

36 (5.5)

5

35 (5.3)

3

<0.001

Fasting plasma glucose (mmol/l)

5.6

0.5

5.3

0.4

<0.001

30-min plasma glucose (mmol/l)

8.0

1.7

7.1

1.5

<0.001

2-h plasma glucose (mmol/l)

6.0

1.7

5.5

1.2

<0.001

Fasting plasma insulin (pmol/l)

79.2

55.6

63.2

43.1

<0.001

30-min plasma insulin (pmol/l)

507.0

355.6

439.0

266

0.013

2-hour plasma insulin (pmol/l)

351.4

327.1

278.5

242.4

<0.001

P-glucose area under the curve (mmol/l*min)

832.6

160.3

749.6

130.6

<0.001

P-insulin area under the curve (pmol/l*min)

40880.3

28499.6

34414

21656

<0.001

HOMA-IR

2.9

2.1

2.2

1.6

<0.001

Matsuda ISI (mg/dl, mU/l)

5.7

3.2

7.1

3.6

<0.001

Disposition Index

167.4

65.1

206.3

77.6

<0.001

  1. *Individuals diagnosed with type 2 diabetes during the follow-up time (n = 15) were not included in HbA1C and oral glucose tolerance tests. HOMA-IR, homeostatic model assessment of insulin resistance. P-values < 0.05 are indicated in bold font.