Table 1 Baseline characteristics

Age (years)

67.5 (11.8)

69.6 (43.4; 86.1)

74.5 (12.3)

76.9 (47.1; 90.5)

Sex (M/F, n)

14/3

11/6

Diabetes duration (years)

21.8 (12.1)

17.5 (7.0; 41.0)

22.6 (13.4)

20.0 (2.0; 52.0)

HbA1c (mmol/mol)

67.0 (15.5)

66.0 (42.0; 94.0)

66.4 (18.3)

66.0 (33.0; 96.0)

BMI (kg/m²)

28.1 (3.9)

27.6 (20.6; 35.8)

26.5 (4.3)

26.0 (20.5; 36.0)

Systolic blood pressure (mmHg)

143.3 (22.0)

145.0 (100.0; 177.0)

149.9 (16.1)

150.0 (120.0; 175.0)

Diastolic blood pressure (mmHg)

76.0 (9.8)

75.0 (54.0; 89.0)

70.4 (12.7)

70.0 (50.0; 91.0)

Toe blood pressure (mmHg)

75.0 (30.9)

82.0 (16.0; 123.0)

62.3 (32.9)

52.0 (32.0; 152.0)

Non-smoking status (n)

15

14

Alcohol habits (audit)

3.29 (3.22)

3.00 (0.00; 11.00)

2.13 (2.09)

2.00 (0.00; 5.00)

Physical activity (inactive, low, high; n)

3/1/12

2/3/11

Previous stroke/TIA (no/yes; n)

15/4

17/1

Coronary heart disease (no/yes; n)

11/8

11/7

Retinopathy (no/yes; n)

9/8

7/11

Neuropathy

1/18

3/15

Amputation (no/yes: n)

9/9

6/11

Previous foot ulcer (no/yes; n)

3/15

3/15

Duration of current ulcer (years)

1.78 (3.26)

0.46 (0.12; 14.00)

1.19 (1.69)

0.47 (0.07; 5.19)

Ulcer area (mm²)

542 (927)

192 (28; 3654)

428 (713)

190 (27; 2928)