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Table 1 Demographic characteristics of participants
| All (n = 443) | Men (n = 294) | Women (n = 149) | P-valuea | ||
|---|---|---|---|---|---|
| Age, mean (sd) | 69.2 (10.6) | 69.1 (10.3) | 69.4 (11.4) | 0.794 | |
| Education, n (%) | Incomplete elementary schooling | 11 (2.5) | 8 (2.7) | 3 (2.0) | 0.758b |
| Elementary school | 150 (33.9) | 103 (35.0) | 47 (31.5) | 0.502 | |
| Upper secondary school | 154 (34.8) | 104 (35.4) | 50 (33.6) | 0.756 | |
| College/university | 110 (24.8) | 68 (23.1) | 42 (28.2) | 0.218 | |
| Missing | 18 (4.1) | 11 (3.7) | 7 (4.7) | ||
| Occupation, n (%)c | Retired | 306 (69.1) | 206 (70.1) | 100 (67.1) | 0.548 |
| Paid employment | 74 (16.7) | 60 (20.4) | 14 (9.4) | 0.003 | |
| Unemployed | 12 (2.7) | 7 (2.4) | 5 (3.4) | 0.547b | |
| Student | 3 (0.7) | 1 (0.3) | 2 (1.3) | 0.262b | |
| Disability pension | 58 (13.1) | 30 (10.2) | 28 (18.8) | 0.011 | |
| Sick leave | 25 (5.6) | 16 (5.4) | 9 (6.0) | 0.790 | |
| Missing | 8 (1.8) | 5 (1.7) | 3 (2.0) | ||
| Diabetes type, n (%) | Type 1 | 120 (27.1) | 71 (24.1) | 49 (32.9) | 0.051 |
| Type 2 | 320 (72.2) | 220 (74.8) | 100 (67.1) | 0.087 | |
| Other type | 3 (0.7) | 3 (1.0) | 0 | 0.554b | |
| Missing | 0 | 0 | 0 | ||
| Current ulcer, n (%) | Yes | 135 (30.5) | 89 (30.3) | 46 (30.9) | 0.897 |
| No | 305 (68.8) | 203 (69.0) | 102 (68.5) | ||
| Missing | 3 (0.7) | 2 (0.7) | 1 (0.7) | ||
| Previous ulcer, n (%) | Yes | 254 (57.3) | 185 (62.9) | 69 (46.3) | 0.001 |
| No | 175 (39.5) | 100 (34.0) | 75 (50.3) | ||
| Missing | 14 (3.2) | 9 (3.1) | 5 (3.4) | ||
| Minor amputation, n (%) | Yes | 62 (14.0) | 52 (17.7) | 10 (6.7) | 0.002 |
| No | 370 (83.5) | 237 (80.6) | 133 (89.3) | ||
| Missing | 11 (2.5) | 5 (1.7) | 6 (4.0) | ||
| Major amputation, n (%) | Yes | 20 (4.5) | 17 (5.8) | 3 (2.0) | 0.074 |
| No | 414 (93.5) | 272 (92.5) | 142 (95.3) | ||
| Missing | 9 (2.0) | 5 (1.7) | 4 (2.7) |
