Characteristics of each cohort
| T1: 2000–2002 cohort (n=79) | T2: 2009–2011 cohort (n=143) | |
|---|---|---|
| Clinical characteristics | ||
| Female, % | 41.8 | 46.9 |
| Age at assessment, mean (95% CI) | 13 years 10 months (9 years 5 months to 17 years 3 months) | 14 years 7 months* (11 years to 17 years 8 months) |
| Age at onset, mean (95% CI) | 10 years 1 months (5 years to 14 years) | 10 years 6 months (11 years to 17 years 4 months) |
| Baseline CY-BOCS, mean (95% CI) | 22 (12 to 32) | 26 (18 to 35)*** |
| Referral source, % | ||
| Child Psychiatry Services | 69.6 | 73.4 |
| General practitioner | 27.8 | 23.8 |
| Paediatricians | 1.3 | 1.4 |
| Other | 1.3 | 1.4 |
| Previous treatments, % | ||
| CBT or SSRI | 67.1 | 44.8** |
| CBT | 31.6 | 37.1 |
| SSRI | 58.2 | 25.2*** |
| Non-CBT psychotherapy | 11.4 | 24.5* |
Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS) reliably measures OCD symptoms severity.
*p<0.05, **p<0.01, ***p<0.001, significant difference between cohorts.
CBT, cognitive behavioural therapy; OCD, obsessive–compulsive disorder; SSRI, selective serotonin reuptake inhibitor.