All CPRD patients | T1DM patients | T2DM patients | ||||
---|---|---|---|---|---|---|
Population* | N | % | N | Per cent | N | Per cent |
Total (12+) | 7 707 475 | 100.0% | 30 657 | 100.0% | 338 390 | 100.0% |
Gender | ||||||
Men | 3 790 664 | 49.2% | 17 761 | 57.9% | 187 141 | 55.3% |
Women | 3 916 811 | 50.8% | 12 896 | 42.1% | 151 249 | 44.7% |
Ethnic group | ||||||
White | 4 006 927 | 52.0% | 19 810 | 64.6% | 205 168 | 60.6% |
South Asian | 223 090 | 2.9% | 453 | 1.5% | 15 840 | 4.7% |
Black | 142 070 | 1.8% | 373 | 1.2% | 7186 | 2.1% |
Other | 109 402 | 1.4% | 254 | 0.8% | 3891 | 1.2% |
Mixed | 50 363 | 0.7% | 152 | 0.5% | 1095 | 0.3% |
Unknown | 3 175 623 | 41.2% | 9615 | 31.4% | 105 210 | 31.1% |
IMD quintile | ||||||
1 (most affluent) | 1 338 388 | 17.4% | 5280 | 17.2% | 52 280 | 15.5% |
2 | 1 496 051 | 19.4% | 5934 | 19.4% | 61 008 | 18.0% |
3 | 1 621 330 | 21.0% | 6517 | 21.3% | 71 982 | 21.3% |
4 | 1 723 122 | 22.4% | 6910 | 22.5% | 79 130 | 23.4% |
5 (least affluent) | 1 470 726 | 19.1% | 5833 | 19.0% | 72 094 | 21.3% |
Region | ||||||
North east | 121 334 | 1.6% | 516 | 1.7% | 5465 | 1.6% |
North west | 803 853 | 10.4% | 3226 | 10.5% | 40 255 | 11.9% |
Yorkshire and the Humber | 269 265 | 3.5% | 1050 | 3.4% | 10 888 | 3.2% |
East midlands | 296 884 | 3.9% | 1182 | 3.9% | 12 489 | 3.7% |
West midlands | 654 656 | 8.5% | 2451 | 8.0% | 30 710 | 9.1% |
East of England | 752 786 | 9.8% | 3041 | 9.9% | 29 139 | 8.6% |
South west | 651 327 | 8.5% | 2601 | 8.5% | 30 330 | 9.0% |
South central | 853 405 | 11.1% | 3242 | 10.6% | 33 416 | 9.9% |
London | 1 017 747 | 13.2% | 3150 | 10.3% | 39 281 | 11.6% |
South east | 792 775 | 10.3% | 3123 | 10.2% | 33 399 | 9.9% |
Northern Ireland | 199 509 | 2.6% | 937 | 3.1% | 9322 | 2.8% |
Scotland | 711 397 | 9.2% | 3601 | 11.7% | 31 387 | 9.3% |
Wales | 582 537 | 7.6% | 2537 | 8.3% | 32 309 | 9.5% |
Retinopathy screen 2004–2014 | 710 445 | 8.7% | 24 828 | 79.3% | 279 495 | 82.6% |
Retinopathy screen in last 15 months | 336 960 | 4.1% | 15 788 | 50.4% | 180 268 | 53.3% |
Diabetic retinopathy | 144 362 | 1.9% | 14 846 | 48.4% | 95 807 | 28.3% |
Severe diabetic retinopathy | 9085 | 0.1% | 2148 | 7.0% | 4651 | 1.4% |
Age at diabetes diagnosis (in years, mean, SD) | 26 | (18) | 60 | (14) | ||
Mean duration of diabetes at DR onset (years, SD) | 14.7 | (12.2) | 5.9 | (6.9) | ||
Mean duration of diabetes at severe DR onset (years, SD) | 20.9 | (12.7) | 10.4 | (8.7) |
*All columns refer to number and %, unless otherwise specified.
CPRD, Clinical Practice Research Datalink; DR, diabetic retinopathy; IMD, Index of Multiple Deprivation; T1DM, type 1 diabetes mellitus; T2DM, type 2 diabetes mellitus.