Table 1. Clinical Characteristics of Suicide Cases and Matched Controls.
| Characteristic | Participant groupa | P value | |
|---|---|---|---|
| Suicide cases (n = 910) | Controls (n = 6346) | ||
| Any mental disorder | 376 (41.3) | 1111 (17.5) | <.001 |
| No. of mental disorders, mean (SD) | 0.76 (1.15) | 0.27 (0.69) | <.001 |
| Type of mental disorder | |||
| ADHD | 112 (12.3) | 497 (7.8) | <.001 |
| Conductb | 89 (9.8) | 290 (4.6) | <.001 |
| Depression | 162 (17.8) | 262 (4.1) | <.001 |
| Bipolar and other mood disorders | 127 (14.0) | 249 (3.9) | <.001 |
| Anxiety | 81 (8.9) | 216 (3.4) | <.001 |
| Schizophrenia or psychosis | 55 (6.0) | 47 (0.7) | <.001 |
| Adjustment | 56 (6.2) | 171 (2.7) | <.001 |
| Other mental health conditionsc | 70 (7.7) | 175 (2.8) | <.001 |
| Any substance use disorder | 102 (11.2) | 174 (2.7) | <.001 |
| Any chronic general medical condition | 114 (12.5) | 490 (7.7) | <.001 |
| Asthma | 51 (5.6) | 226 (3.6) | .003 |
| Cancer | 11 (1.2) | 82 (1.3) | .83 |
| Congenital anomaly | 7 (0.8) | 72 (1.1) | .32 |
| Seizure disorder | 26 (2.9) | 44 (0.7) | <.001 |
| Diabetes | 9 (1.0) | 38 (0.6) | .17 |
| Cerebral palsy | 3 (0.3) | 44 (0.7) | .20 |
| Co-occurring mental disorder and general medical condition | 61 (6.7) | 146 (2.3) | <.001 |
Abbreviation: ADHD, attention-deficit/hyperactivity disorder.
a
Unless otherwise indicated, data are expressed as number (percentage) of participants.
b
Includes oppositional defiant disorder.
c
Includes all mental health disorders coded as International Classification of Diseases, Ninth Revision, Clinical Modification, diagnosis codes 290 to 319 not otherwise categorized above.