Principal Treatment Centre (PTC) estimated number of referrals by age over a 12-month period
| Region | Boys, postpubertal | Boys, prepubertal | Girls, postpubertal | Girls, prepubertal | All <18-year-olds |
| Range (median) | |||||
| UK | 171–265 (218) | 51–115 (83) | 55–110 (82) | 61–130 (95) | 338–620 (479) |
| Scotland, Wales and Northern Ireland (Devolved Nations) | 15–25 (20) | 5–25 (15) | 5–25 (15) | 10–30 (20) | 35–105 (70) |
| Midlands and East of England | 14–30 (22) | 14–30 (22) | 13–20 (17) | 14–30 (22) | 55–80 (68) |
| North of England | 59–95 (77) | 18–30 (24) | 29–45 (37) | 18–35 (26) | 124–205 (165) |
| South of England | 83–115 (99) | 14–30 (22) | 8–20 (14) | 19–35 (27) | 124–200 (162) |
Participants were asked to provide an estimate of their centre’s number of referrals using the following predefined ranges: 0, 1–5, 6–10, 11–15, 16–20, 21–25, 26–50, 51–75, 76–100, >100.