Table 2.
Characteristics of 2012 sample population used for the analysis
| Characteristic | Intellectual disabilities N (%)/Median (range) | No intellectual disabilities N (%)/Median (range) | ||
|---|---|---|---|---|
| Total | 16,904 | (100.0) | 434,318a | (100.0) |
| Age (at baselineb) | 36.0 | (10–100) | 44.0 | (10–109) |
| Gender | ||||
| Male | 9,451 | (55.9) | 213,678 | (49.2) |
| Female | 7,453 | (44.1) | 220,640 | (50.8) |
| Ethnicity | ||||
| White | 12,796 | (75.7) | 297,320 | (68.5) |
| South Asian | 459 | (2.7) | 15,425 | (3.6) |
| Black | 374 | (2.2) | 11,257 | (2.6) |
| Other | 456 | (2.7) | 16,428 | (3.8) |
| Not known | 2819 | (16.7) | 93,888 | (21.6) |
| Type 2 diabetesc | ||||
| Present | 1006 | (6.0) | 23,381 | (5.4) |
| Died | 193 | (1.1) | 4296 | (1.0) |
| Most common genetic syndromes | ||||
| Down syndrome | 2049 | (12.1) | ||
| Fragile X syndrome | 323 | (1.9) | ||
| Tuberous sclerosis | 158 | (0.9) | ||
| William syndrome | 70 | (0.4) | ||
| Prader-Willi syndrome | 61 | (0.4) | ||
aIncludes 553 individuals from the intellectual disability sample who changed status (i.e. had their first intellectual disability diagnosis) during the observation window and a further 1339 individuals who were registered but had their first intellectual disability diagnosis outside the window (i.e. after 2012)
bIndividuals entered the cohort on 01/01/2012 or sometime during 2012 if registered or changed status during the observation period
cIncludes 1871 individuals who changed T2DM status (i.e. had a T2DM diagnosis) during the observation window