Prevalence of self-harm and suicidal thoughts and behaviour, alcohol and substance use, and physical health comorbidities in the Optymise cohort at baseline
| N | Percentage of sample | |
| Self-harm and suicidal thoughts and behaviour | ||
| Deliberate self-harm | 1013 | 36.6% |
| Suicidal Ideation | 1240 | 44.8% |
| Suicide planning | 489 | 17.7% |
| Suicide attempt(s) | 379 | 13.7% |
| Hospitalisation for suicide attempt | 219 | 7.9% |
| Alcohol and substance use | ||
| Any alcohol or substance use | 1853 | 67.0% |
| Alcohol use | 1724 | 62.3% |
| Cannabis use | 1083 | 39.1% |
| Tobacco use | 1048 | 37.8% |
| Stimulant use | 570 | 20.6% |
| Other drug use | 432 | 15.6% |
| Physical health comorbidities | ||
| Any major physical illness | 447 | 16.2% |
| Respiratory illness | 129 | 4.7% |
| Neurological illness | 87 | 3.1% |
| Endocrine illness | 77 | 2.8% |
| Metabolic illness | 49 | 1.8% |
| Infective illness | 28 | 1.0% |
| Immune illness | 26 | 0.9% |
| Gastrointestinal illness | 24 | 0.9% |
| Musculoskeletal illness | 20 | 0.7% |
| Gynaecological illness | 19 | 0.7% |
| Pain-related illness | 19 | 0.7% |
| Cardiovascular illness | 12 | 0.4% |
| Skin-related illness | 13 | 0.5% |
| Blood-related illness | 10 | 0.4% |
| Allergic illness | 9 | 0.3% |
| Cancer or tumour-related illness | 7 | 0.3% |
| Renal or urinary illness | 4 | 0.1% |
| Hearing-related illness | 3 | 0.1% |
| Ophthalmic illness | 2 | 0.1% |