Baseline characteristics of control participants, intervention participants, and all participants in the Melbourne Diabetes Prevention Study
| Control (n=165) | Intervention (n=177) | All participants (n=342) | |
|---|---|---|---|
| Gender (men) | 61 (37.0%) | 68 (38.4%) | 129 (37.7%) |
| Age (years) | |||
| N | 165 | 177 | 342 |
| Mean (SD) | 65.0 (6.7) | 65.1 (6.2) | 65.0 (6.4) |
| Median | 66.0 | 66.0 | 66.0 |
| Age (%) | |||
| 0–49 | 1 (0.6) | – | 1 (0.3) |
| 50–54 | 15 (9.1) | 10 (5.6) | 25 (7.3) |
| 55–59 | 18 (10.9) | 26 (14.7) | 44 (12.9) |
| 60–64 | 34 (20.6) | 41 (23.2) | 75 (21.9) |
| 65–69 | 51 (30.9) | 46 (26.0) | 97 (28.4) |
| 70–74 | 35 (21.2) | 50 (28.2) | 85 (24.9) |
| 75–80 | 11 (6.7) | 4 (2.3) | 15 (4.4) |
| AUSDRISK | |||
| N | 165 | 177 | 342 |
| Mean (SD) | 18.2 (3.2) | 18.7 (3.5) | 18.5 (3.3) |
| 15–19 (%) | 121 (73.3) | 118 (66.7) | 239 (69.9) |
| ≥20 (%) | 44 (26.6) | 59 (33.3) | 103 (30.1) |
| Framingham 5-year CVD risk | |||
| N | 152 | 142 | 294 |
| Mean (SD) | 8.3 (6.0) | 9.4 (5.9) | 8.8 (6.0) |
| Median | 6.8 | 8.2 | 7.2 |
| Waist (cm) | |||
| N | 163 | 177 | 340 |
| Mean (SD) | 102.5 (12.7) | 101.7 (12.2) | 102.1 (12.4) |
| Median | 102.0 | 101.8 | 101.90 |
| Waist (%) | |||
| <80 | 5 (3.1) | 9 (5.1) | 14 (4.1) |
| 80 to <90 | 21 (12.9) | 23 (13.0) | 44 (12.9) |
| 90 to <100 | 43 (26.4) | 45 (25.4) | 88 (25.9) |
| 100 to <110 | 51 (31.3) | 54 (30.5) | 105 (30.9) |
| 110 to <120 | 26 (16.0) | 32 (18.1) | 58 (17.1) |
| >120 | 17 (10.4) | 14 (7.9) | 31 (9.1) |
| BMI (kg/m2) | |||
| N | 163 | 177 | 340 |
| Mean (SD) | 31.34 (5.22) | 31.16 (4.97) | 31.25 (5.08) |
| <20 (%) | 1 (0.6) | 0 (0) | 1 (0.3) |
| 20 to <25 (%) | 11 (6.7) | 14 (7.9) | 25 (7.4) |
| 25 to <30 (%) | 60 (36.8) | 66 (37.3) | 126 (37.1) |
| >30 (%) | 91 (55.8) | 97 (54.8) | 188 (55.3) |
| Weight (kg) | |||
| N | 163 | 177 | 340 |
| Mean (SD) | 87.4 (16.1) | 86.5 (15.3) | 87.0 (15.7) |
| Education (years) | |||
| N | 160 | 172 | 332 |
| Mean (SD) | 12.68 (3.09) | 12.98 (3.88) | 12.83 (3.51) |
| Primary (%) | 49 (30.6) | 55 (32.0) | 104 (31.3) |
| Secondary (%) | 45 (28.1) | 56 (32.6) | 101 (30.4) |
| Tertiary (%) | 66 (41.3) | 61 (35.5) | 127 (38.3) |
| Income level | |||
| N | 163 | 175 | 338 |
| High (%) | 87 (52.73) | 89 (50.28) | 176 (51.46) |
| Medium (%) | 48 (29.09) | 62 (35.03) | 110 (32.16) |
| Low (%) | 28 (16.97) | 24 (13.56) | 52 (15.20) |
| Smoking status | |||
| N | 165 | 176 | 341 |
| Non-smoker (%) | 155 (93.9) | 162 (92.0) | 317 (93.0) |
| Current smoker (%) | 10 (6.1) | 14 (8.0) | 24 (7.0) |
| Work status | |||
| N | 157 | 166 | 323 |
| Fulltime employed (%) | 13 (7.9) | 12 (6.9) | 25 (7.4) |
| Part-time or casual employed (%) | 30 (18.2) | 34 (19.4) | 64 (18.8) |
| Unemployed and seeking work (%) | 1 (0.6) | 3 (1.7) | 4 (1.2) |
| Home duties (%) | 19 (11.5) | 13 (7.4) | 32 (9.4) |
| Retired/pensioner (%) | 90 (54.5) | 103 (58.9) | 193 (56.8) |
| Full-time carer (%) | 4 (2.4) | 1 (0.6) | 5 (1.5) |
| HADS-A | |||
| N | 164 | 175 | 339 |
| Normal (<7) (%) | 54 (32.9) | 60 (34.3) | 114 (33.6) |
| Mild anxiety (8–10) (%) | 82 (50.0) | 79 (45.1) | 161 (47.5) |
| Moderate-severe anxiety (≥11) (%) | 28 (17.1) | 36 (20.6) | 64 (18.9) |
| HADS-D | |||
| N | 164 | 174 | 338 |
| Normal (<7) (%) | 26 (15.9) | 36 (20.7) | 62 (18.3) |
| Mild depression (8–10) (%) | 128 (78.0) | 133 (76.4) | 261 (77.2) |
| Moderate-severe depression (≥11) (%) | 10 (6.1) | 5 (2.9) | 15 (4.4) |
BMI, body mass index; CVD, cardiovascular disease; HADS, hospital anxiety and depression score.