Table 1 Characteristics of subjects in prediabetic cases and controls

Male, n (%)

152 (37 %)

752 (34.2 %)

904 (34.6 %)

0.276

Age (year)

53 (47–57.8)

51 (46–56)

51 (46–56)

<0.0001

Weight (kg)

51.8 (46–57.9)

51(46.3 − 56.5)

51 (46.2 − 56.6)

0.117

Height (cm)

155.5 (150.5 − 160)

155 (150.7 − 160)

155 (150.6 − 160

0.731

Body mass index (kg/m²)

21.5 (19.6 − 23.4)

21.1 (19.3 − 22.9)

21.2 (19.4 − 23)

0.012

Body fat (%)

28.2 (23.7 − 31.9)

27.5 (22.9 − 31.5)

27.6 (23.2 − 31.6)

0.119

Waist circumference (cm)

75 (69–82)

73.5 (68.5 − 79)

74 (68.5 − 79.5)

0.002

Hip circumference (cm)

88 (84–92)

88 (84–91.3)

88 (84–91.5)

0.628

Waist − hip ratio

0.85 (81–0.90)

0.84(0.80 − 0.88)

0.84 (0.80 − 0.88)

<0.0001

 Normal

237 (57.8)

1342 (61.4)

1579 (60.8)

0.129

 Overweight

77 (18.8)

344 (15.7)

421 (16.2)

 Obesity

44 (10.7)

183 (8.4)

227 (8.7)

 Underweight

52 (12.7)

316 (14.5)

368 (14.2)

Systolic blood pressure (mmHg)

120 (110–137.5)

110.3 (100–127.5)

115 (110–130)

<0.0001

Diastolic blood pressure (mmHg)

80 (70–85)

70 (65–80)

70 (65–80)

<0.0001

Total cholesterol (mmol l⁻¹)

4.60 (4.09 − 5.00)

4.20 (3.85 − 4.87)

4.30 (3.90 − 4.90)

<0.0001

HDL − C (mmol l⁻¹)

1.19 (0.97 − 1.60)

1.23 (0.99 − 1.60)

1.22 (0.98 − 1.60)

<0.0001

LDL − C (mmol l⁻¹)

3.10 (2.64 − 3.70)

2.79 (2.31 − 3.31)

2.83 (2.34 − 3.40)

0.103

Triglyceride (mmol l⁻¹)

1.80 (1.12 − 2.55)

1.34 (1.00 − 2.02)

1.41 (1.01 − 2.10)

<0.0001