Table 2.
Socio-demographic, educational and clinical characteristics of the population resident in South London by gender and ASD status
| Sample characteristics* | Male (n=56,578) | Female (n=56,708) | ||
|---|---|---|---|---|
| No ASD (n=54,552) | ASD (n=2026) | No ASD (n=56,271) | ASD (n=437) | |
| Self-harm presentation to ED | 107 (0.2) | 11 (0.5) | 635–645** (1.1–1.1) | <10 (<2·3) |
| Mean age at baseline (SD) | 12.8 (2.0) | 12.3 (1.7) | 12.8 (2.0) | 12.2 (1.6) |
| Mean duration of follow-up (SD) | 2.74 (1.3) | 2.73 (1.3) | 2.72 (1.3) | 2.80 (1.3) |
| Ethnicity | (n, %) | (n, %) | (n, %) | (n, %) |
| White | 20,238 (37.1) | 770 (38.0) | 20,651 (36.7) | 176 (40.3) |
| Black | 20, 012 (36.7) | 850 (42.0) | 21,099 (37.5) | 174 (39.8) |
| Asian | 4788 (8.8) | 78 (3.9) | 4869 (8.7) | 24 (5.5) |
| Mixed | 6013 (11.0) | 237 (11.7) | 6275 (11.2) | 45 (10.3) |
| Other | 1928 (3.5) | 42 (2.1) | 1891 (3.4) | <10 (<2.3) |
| Not disclosed/unknown | 1575 (2.9) | 49 (2.4) | 1486 (2.6) | 12 (2.8) |
| National neighbourhood deprivation | ||||
| Most deprived quintile | 19,805 (36.3) | 824 (40.8) | 20,222 (40.0) | 173 (39.6) |
| 2nd | 22,100 (40.5) | 804 (39.8) | 22,794 (40.5) | 179 (40.1) |
| 3rd | 7759 (14.2) | 251 (12.4) | 8227 (14.6) | 550 (12.6) |
| 4th | 3283 (6.0) | 99 (4.9) | 3322 (5.9) | 24 (5.5) |
| Least deprived quintile | 1579 (2.9) | 42 (2.1) | 1688 (3.0) | <10 (<2.3) |
| Special education needsa | ||||
| Learning Difficulties (specific/moderate) | 8898 (16.3) | 548 (27.1) | 6085 (10.8) | 133 (30.4) |
| Learning Difficulties (severe/ profound) | 591 (1.1) | 250 (12.3) | 381 (0.7) | 65 (14.9) |
| Behavioural, Emotional, Social problems | 6726 (12.3) | 548 (27.1) | 3548 (6.3) | 89 (20.4) |
| Speech, language and communication | 4291 (7.9) | 806 (39.8) | 2134 (3.8) | 161 (36.8) |
| Hearing, vision or physical disability | 795 (1.5) | 69 (3.4) | 735 (1.3) | 16 (3.4) |
| First languagea | ||||
| English | 39,920 (73.2) | 1661 (82.0) | 40,815 (72.5) | 344 (78.7) |
| Other | 13,612 (25.0) | 341 (16.8) | 14, 541 (25.9) | 89 (20.4) |
| Not disclosed | 1022 (1.9) | 24 (1.2) | 915 (1.6) | <10 (<2.3) |
| School type | ||||
| Mainstream | 53,868 (98.7) | 1597 (78.8) | 56,024 (99.6) | 333 (76.2) |
| Special school | 579 (1.1) | 418 (20.6) | 237 (0.4) | 104 (23.8) |
| Pupil referral units | 107 (0.2) | 11 (0.5) | 10 (0.02) | 0 (0) |
| Educational attainment (key stage two)b | ||||
| Lowest quintile | 12, 220 (23.1) | 1146 (59.0) | 10, 461 (19.2) | 296 (69.7) |
| Second | 10,461 (19.8) | 277 (14.3) | 10,750 (19.7) | 55 (12.9) |
| Third | 10,301(19.5) | 224 (11.5) | 11,141 (20.4) | 29 (6.8) |
| Fourth | 10,283 (19.5) | 168 (8.6) | 10,078 (20.3) | 22 (5.2) |
| Highest quintile | 9577 (18.1) | 128 (6.6) | 11,172 (20.4) | 23 (5.4) |
| Less than 80% attendancec | 2587 (4.9) | 118 (6.0) | 2538 (4.7) | 22 (5.2) |
| Fixed term exclusionsa | 5847 (10.7) | 239 (11.8) | 2790 (5.0) | 26 (6.0) |
| Other social factors | ||||
| Summer birth (May-Aug) | 18,941 (34.7) | 720 (35.5) | 19,185 (34.1) | 140 (32.0) |
| Free school meals a | 13,105 (24.0) | 696 (34.5) | 13,391 (23.8) | 167 (38.2) |
| Looked after child status d | 420 (0.8) | 30 (1.5) | 397 (0.7) | 12 (2.8) |
| ICD-10 hyperkinetic disorder | 670 (1.2) | 131 (6.5) | 168 (0.3) | 23 (5.3) |
*Missing = 257 non-matched self-harm cases
**Range presented to avoid statistical disclosure in the ASD group
Missing values. a257, b3731, c4049, and d4547