Table 4.
Duration in months to the first documentation of mental illness made after prison entrya
| Mental disorders | First diagnosisb
n = 4044 |
Months | Percent diagnosed in months | ||||
|---|---|---|---|---|---|---|---|
| Frequency (%) | Mean (SD) | Median [range] | ≤1 | >1–6 | > 6–24 | > 24 | |
| Substance abusec | 1130 (27.9) | 10.3 (36.6) | 0.5 [0.25–402] | 72.2 | 13.5 | 6.0 | 8.3 |
| Depression | 729 (18.0) | 26.2 (65.0) | 0.75 [0.25–483] | 57.2 | 14.9 | 8.0 | 19.9 |
| Anxiety | 616 (15.2) | 24.4 (57.6) | 1.0 [0.25–385] | 52.1 | 18.3 | 12.0 | 17.5 |
| Personality disorders | 366 (9.1) | 29.5 (59.0) | 3.0 [0.25–354] | 39.1 | 21.3 | 13.9 | 25.7 |
| Psychosis and psychotic disorders | 280 (6.9) | 13.7 (36.3) | 0.75 [0.25–290] | 60.7 | 16.4 | 10.0 | 12.9 |
| Developmental disabilities | 250 (6.2) | 15.5 (39.4) | 2.0 [0.25–268] | 42.4 | 28.4 | 15.6 | 13.6 |
| Post-traumatic stress disorders | 247 (6.1) | 21.0 (49.7) | 1.0 [0.25–322] | 53.0 | 19.8 | 7.3 | 19.8 |
| Bipolar | 175 (4.3) | 11.4 (24.1) | 1.0 [0.25–143] | 52.0 | 17.7 | 18.3 | 12.0 |
| Schizophrenia | 91 (2.3) | 52.2 (90.2 | 5.0 [0.25–354] | 44.0 | 6.6 | 11.0 | 38.5 |
| Dysthymia/neurotic depression | 66 (1.6) | 44.7 (57.7) | 18.0 [0.25–216] | 31.8 | 12.1 | 10.6 | 45.5 |
| Impulse control | 55 (1.4) | 18.6 (26.7) | 5.0 [0.25–100] | 36.4 | 16.4 | 23.6 | 23.6 |
| Dementia | 18 (0.5) | 6.7 (8.1)) | 3.5 [0.25–30] | 33.3 | 33.3 | 27.8 | 5.6 |
| Sexual disorders, paraphilia | 9 (0.2) | 23.9 (51.2) | 1.0 [0.25–158] | 55.6 | 0 | 22.2 | 22.2 |
| Sleep, movement and eating disorders | 9 (0.2) | 41.1 (53.1) | 4.0 [0.25–144] | 33.3 | 22.2 | 0 | 44.4 |
| Pervasive developmental disorders | 3 (0.1) | 0.4 (0.3) | 0.25 [0.25–0.75] | 100.0 | 0 | 0 | 0 |
SD standard deviation
aexcluding any prisoners with mental illness diagnosed before incarceration
bThe first documentation of mental illness included 1 to 5 different types of mental disorders; the denominator for the total frequency may include multiple mental disorders per prisoner
cSubstance use includes alcohol-induced persisting amnestic disorder, cannabis-induced psychotic disorder, with hallucinations, other (or unknown) substance-induced psychotic disorder with hallucinations, phencyclidine-induced psychotic disorder, with hallucinations, psychotic disorder NOS, substance-induced, alcohol dependence, opioid dependence, sedative/hypnotic/anxiolytic dependence, cocaine dependence, cannabis dependence, amphetamine dependence, other polysubstance abuse, methamphetamine dependence, hallucinogen dependence, inhalant dependence, polysubstance dependence, other (or unknown) dependence, phencyclidine dependence