| Type 1 diabetes mellitus | Type 2 diabetes mellitus | |||||
| Total No | Depressed No (%) | p Value | Total No | Depressed No (%) | p Value | |
| Ethnicity | ||||||
| South Asian | 160 | 16 (10) | 0.355 | 1305 | 100 (7.7) | 0.007 |
| White European | 1154 | 91 (7.9) | 3116 | 320 (10.3) | ||
| Age (years) | ||||||
| <59 | 1096 | 85 (7.8) | 0.460 | 1598 | 183 (11.5) | <0.001 |
| ≥60 | 277 | 25 (9.0) | 3073 | 252 (8.2) | ||
| Sex | ||||||
| Males | 794 | 46 (5.8) | <0.001 | 2475 | 189 (7.6) | <0.001 |
| Females | 581 | 64 (11) | 2198 | 246 (11.2) | ||
| South Asian | ||||||
| Males | 99 | 7 (7.1) | 0.173 | 675 | 39 (5.8) | 0.009 |
| Females | 61 | 9 (14.8) | 630 | 61 (9.7) | ||
| White European | ||||||
| Males | 661 | 37 (5.6) | <0.001 | 1676 | 146 (8.7) | 0.002 |
| Females | 493 | 54 (11) | 1440 | 174 (12.1) | ||
| IMDS (quartiles) | ||||||
| 1 | 463 | 34 (7.3) | 0.752 | 1068 | 83 (7.8) | 0.124 |
| 2 | 353 | 26 (7.4) | 1123 | 101 (9.0) | ||
| 3 | 302 | 26 (8.6) | 1204 | 121 (10.0) | ||
| 4 | 246 | 23 (9.3) | 1219 | 127 (10.4) | ||
| Duration of diabetes (years) | ||||||
| 0–5 | 215 | 19 (8.8) | 0.663 | 1720 | 136 (7.9) | 0.005 |
| 6–14 | 350 | 24 (6.9) | 1497 | 168 (11.2) | ||
| ≥15 | 782 | 63 (8.1) | 1024 | 104 (10.2) | ||
| Insulin | – | – | ||||
| Yes | 2622 | 294 (11.2) | <0.001 | |||
| No | 2045 | 140 (6.8) | ||||
| OAD | ||||||
| Yes | 89 | 6 (6.7) | 0.840 | 3196 | 311 (9.7) | 0.142 |
| No | 1284 | 104 (8.1) | 1464 | 122 (8.3) | ||
| Comorbidities | ||||||
| Yes | 341 | 27 (12.0) | 0.002 | 2162 | 242 (11.2) | <0.001 |
| No | 1031 | 68 (6.6) | 2500 | 191 (7.6) | ||
| Complications | ||||||
| Yes | 752 | 71 (9.4) | 0.021 | 2205 | 253 (11.5) | <0.001 |
| No | 614 | 37 (6.0) | 2440 | 180 (7.4) | ||
| Smoker | ||||||
| Yes | 394 | 43 (10.9) | 0.015 | 755 | 89 (11.8) | 0.014 |
| No | 981 | 67 (6.8) | 3918 | 346 (8.8) | ||
| HbA1c (%) | ||||||
| ⩾7 | 1149 | 99 (8.6) | 0.101 | 3058 | 287 (9.4) | 0.785 |
| ⩽6.9 | 216 | 11 (5.1) | 1437 | 139 (9.7) | ||
| BMI (kg/m2) | ||||||
| ≥30 | 298 | 7 (30.7) | 1.000 | 1738 | 73 (4.2) | 0.025 |
| <29 | 901 | 23 (2.6) | 1414 | 38 (2.7) | ||
BMI, body mass index; HbA1c, glycosylated haemoglobin; IMDS, indices of multiple deprivation score; OAD, oral anti-diabetic drug.