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Table 1 Baseline characteristics of the study population

From: HbA1c versus oral glucose tolerance test as a method to diagnose diabetes mellitus in vascular surgery patients

Characteristics

OGTT

 

All

Normo-

Intermediate

Diabetes

P-

patients

glycaemia

hyperglycaemia

mellitus

valuea

Total

275

152

90

33

 

Age, mean years

69.5

68.0

71.5

71.1

0.01

range]

[35-89]

[35-87]

[48-89]

[59-88]

 

Sex, n (%)

    

0.02

Female

74 (26.9)

51 (33.6)

15 (16.7)

8 (24.2)

 

Male

201 (73.1)

101 (66.5)

75 (83.3)

25 (75.8)

 

Smoking status, n (%)

    

0.06

Non-smoker

42 (15.3)

23 (15.1)

10 (11.1)

9 (27.3)

 

Former/current smoker

221 (80.4)

123 (80.9)

77 (85.6)

21 (63.6)

 

Missing

12 (4.36)

6 (3.95)

3 (3.33)

3 (9.09)

 

Renal function, n (%)

    

0.04

Normal (eGFR > 60)

201 (73.1)

120 (79.0)

57 (63.3)

24 (72.7)

 

Reduced (eGFR < 60)

71 (25.8)

31 (20.4)

31 (34.4)

9 (27.3)

 

Missing

3 (1.09)

1 (0.66)

2 (2.22)

  

Anemia female, n (%)

     

No anemia

61 (82.4)

43 (84.3)

10 (66.7)

8 (100)

0.52b

Female Hb < 11.7 g/dL

6 (8.11)

4 (7.84)

2 (13.3)

0

 

Missing

7 (9.46)

4 (7.84)

3 (13.3)

0

 

Anemia male, n (%)

     

No anemia

163 (81.1)

81 (81.2)

62 (82.7)

19 (76.0)

0.81b

Male Hb < 13.4 g/dL

29 (14.4)

16 (15.8)

9 (12.0)

4 (16.0)

 

Missing

9 (4.48)

3 (2.97)

4 (5.33)

2 (8.00)

 

Medical history of CAD, n (%)

    

0.67

No

231 (84.0)

129 (84.9)

73 (81.1)

29 (87.9)

 

Yes

42 (15.3)

22 (14.5)

16 (17.8)

4 (12.1)

 

Missing

2 (0.73)

1 (0.66)

1 (1.11)

0

 

Affected vascular bed, n (%)

    

0.16

Carotid

43 (15.6)

26 (17.1)

11 (12.2)

6 (18.2)

 

Aortic

59 (21.5)

30 (19.7)

23 (25.6)

6 (18.2)

 

IOD

50 (18.2)

35 (23.0)

9 (10.0)

6 (18.2)

 

Infrainguinal

123 (44.7)

61 (40.1)

47 (52.2)

15 (45.5)

 

Fasting glucose, mean mmol/L (SE)

5.70 (0.05)

5.27 (0.04)

5.90 (0.05)

7.11(0.24)

<0.001

HbA1c, mean% (SE)

6.1 (0.03)

6.0 (0.03)

6.1 (0.05)

6.5 (0.13)

<0.001

  1. a Chi-square test for categorical data and Wald-test for continuous data.
  2. b Fisher’s exact test.