Table 1 Baseline demographic and clinical characteristics according to tertiles of SD of HbA1c and SD of FPG

Age (year)^a

65.97 ± 5.52

64.36 ± 7.30

64.88 ± 5.74

0.253

65.27 ± 6.09

64.71 ± 6.08

65.23 ± 6.62

0.825

Sex, female (%)^b

36 (45.57)

42 (52.50)

47 (58.75)

0.252

41 (50.00)

47 (59.49)

37 (47.44)

0.279

BMI (kg/m²)^a

24.43 ± 2.94

23.58 ± 2.71

23.79 ± 2.81

0.147

23.89 ± 2.89

23.44 ± 2.75

24.46 ± 2.79

0.074

SBP (mm Hg)^a

152.92 ± 11.85

153.01 ± 8.71

156.02 ± 8.99

0.083

152.35 ± 8.16

153.56 ± 9.70

156.03 ± 11.61

0.061

DBP (mm Hg)^a

83.68 ± 9.54

80.81 ± 7.73

82.92 ± 7.08

0.073

83.06 ± 8.34

82.38 ± 7.35

81.96 ± 8.99

0.701

Heart rate (bpm)^a

74.82 ± 9.65

76.01 ± 9.09

74.34 ± 8.89

0.498

74.65 ± 10.78

75.30 ± 7.30

75.23 ± 9.31

0.888

Duration of diabetes (years)^c

3.00 (2.85, 3.25)

3.00 (2.85, 3.27)

3.00 (2.82, 3.33)

0.905

3.00 (2.90, 3.35)

3.00 (2.69, 3.13)

3.00 (2.93, 3.19)

0.342

Current smoking, n (%)^b

8 (10.13)

9 (11.25)

7 (8.75)

0.871

8 (9.76)

8 (10.13)

8 (10.26)

0.994

Current drinking, n (%)^b

5 (6.33)

6 (7.50)

5 (6.25)

0.940

7 (8.54)

3 (3.80)

6 (7.69)

0.442

Hypertension history, n (%)^b

62 (78.48)

60 (75.00)

65 (81.25)

0.631

64 (78.05)

61 (77.22)

62 (79.49)

0.941

FPG (mmol/L)^a

9.80 ± 1.50

9.80 ± 1.57

10.14 ± 1.54

0.269

9.97 ± 1.43

9.99 ± 1.46

9.78 ± 1.72

0.625

HbA1c (%)^a

10.01 ± 2.00

10.17 ± 1.53

10.62 ± 1.34

0.061

10.21 ± 1.44

10.19 ± 1.76

10.40 ± 1.77

0.684

TCHO (mmol/L)^a

5.10 ± 0.99

5.36 ± 0.96

5.39 ± 1.00

0.127

5.41 ± 0.91

5.27 ± 0.96

5.18 ± 1.08

0.332

TG (mmol/L)^a

1.89 ± 1.11

1.61 ± 0.84

1.73 ± 1.01

0.200

1.65 ± 0.88

1.65 ± 0.88

1.92 ± 1.18

0.139

HDL-c (mmol/L)^a

1.37 ± 0.45

1.41 ± 0.48

1.38 ± 0.50

0.893

1.38 ± 0.50

1.36 ± 0.41

1.42 ± 0.52

0.768

LDL-c (mmol/L)^a

3.35 ± 1.15

3.63 ± 1.11

3.67 ± 1.21

0.167

3.70 ± 1.08

3.58 ± 1.03

3.38 ± 1.33

0.215

Hypoglycemic agents, n (%)^b

 Metformin

73 (92.41)

72 (90.00)

75 (93.75)

0.675

74 (90.24)

74 (93.67)

72 (92.31)

0.720

 Gliclazide

39 (49.37)

34 (42.50)

35 (43.75)

0.653

37 (45.12)

36 (45.57)

35 (44.87)

0.996

 Other sulfonylurea

24 (30.38)

21 (26.25)

22 (27.50)

0.839

22 (26.83)

18 (22.78)

27 (34.62)

0.245

 Thiazolidinedione

7 (8.86)

5 (6.25)

8 (10.00)

0.681

11 (13.41)

4 (5.06)

5 (6.41)

0.120

 Acarbose

15 (18.99)

15 (18.75)

11 (13.75)

0.613

19 (23.17)

12 (15.19)

10 (12.82)

0.189

 Glinide

4 (5.06)

4 (5.00)

3 (3.75)

0.905

5 (6.10)

4 (5.06)

2 (2.56)

0.551

 Insulin

9 (11.39)

7 (8.75)

7 (8.75)

0.809

8 (9.76)

8 (10.13)

7 (8.97)

0.969

Other drugs, n (%)^b

 Antihypertension drug

57 (72.15)

56 (70.00)

63 (79.63)

0.425

58 (70.73)

58 (73.42)

60 (76.92)

0.673

 Aspirin

56 (70.89)

49 (61.25)

43 (53.75)

0.084

51 (62.20)

47 (59.49)

50 (64.10)

0.836

 Statins

11 (13.92)

13 (16.25)

11 (13.75)

0.883

12 (14.63)

12 (15.19)

11 (14.10)

0.982