Descriptive characteristics of study population. For co-occurring conditions, figures indicate any history of the condition
| Gender dysphoria/incongruence | Autism spectrum conditions | Eating disorder | |
| Total number | 3782 | 18 740 | 13 951 |
| Age at primary diagnosis | |||
| Mean (SD) | 15.1 (2.6) | 9.8 (4.6) | 12.4 (5.1) |
| Median (IQR) | 16 (14–17) | 10 (6–13) | 14 (10–16) |
| Recorded gender, n (%) | |||
| Male | 1359 (35.9) | 14 131–14 136 (75.4)* | 3098 (22.2) |
| Female | 2333 (61.7) | 4603–4608 (24.6)* | 10 853 (77.8) |
| Other | 90 (2.4) | <10 (0.0)* | 0 (0.0) |
| Area deprivation quintile, n (%)† | |||
| 1 (least deprived) | 749 (19.8) | 3352 (17.9) | 3457 (24.8) |
| 2 | 719 (19.0) | 3595 (19.2) | 2932 (21.0) |
| 3 | 673 (17.8) | 3418 (18.3) | 2607 (18.7) |
| 4 | 800 (21.2) | 3779 (20.2) | 2449 (17.6) |
| 5 (most deprived) | 838 (22.2) | 4581 (24.5) | 2499 (17.9) |
| Co-occurring conditions, n (%) | |||
| Anxiety | 909 (24.0) | 3757 (20.0) | 3439 (24.7) |
| Depression | 1622 (42.9) | 4370 (23.3) | 5174 (37.1) |
| Self-harm | 775 (20.5) | 1362 (7.3) | 2475 (17.7) |
*Exact numbers suppressed to preserve anonymity.
†Missing data for area deprivation quintile: gender dysphoria/incongruence group: 3 (0.07%); autism spectrum disorder: 15 (0.08%); eating disorder: 7 (0.05%).