Table 1.
Logistic regression for probable psychosis used in calculating the Disease Risk Score
| Significance | OR | 95 % CI for OR | |||
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Year of survey (reference: 2007) | |||||
| 2000 | 0.23 | 1.34 | 0.83 | 2.16 | |
| 1993 | 0.33 | 1.27 | 0.79 | 2.03 | |
| Location (reference: England) | |||||
| Wales or Scotland | 0.83 | 1.07 | 0.61 | 1.86 | |
| Ethnic grouping (reference: white majority) | |||||
| Black groups | 0.008 | 2.80 | 1.30 | 6.03 | |
| Sex (reference: male) | |||||
| Female | 0.20 | 0.79 | 0.54 | 1.13 | |
| Age (reference: 45 years or more) | |||||
| Less than 45 years | 0.03 | 1.61 | 1.04 | 2.50 | |
| Social class (reference: classes I and II) | |||||
| Class III | 0.28 | 1.30 | 0.81 | 2.08 | |
| Classes IV and V | 0.021 | 1.82 | 1.09 | 3.01 | |
| Educational qualifications (reference: any educational qualification) | |||||
| None | 0.93 | 1.02 | 0.67 | 1.54 | |
| Employment status (reference: employed or economically inactive) | |||||
| Not employed | 0.038 | 2.19 | 1.05 | 4.60 | |
| Economically inactive | 0.0001 | 5.83 | 3.85 | 8.84 | |
| Cannabis use (reference: no usage) | |||||
| Use reported | 0.24 | 1.37 | 0.81 | 2.34 | |
| Stimulant use (reference: no usage) | |||||
| Use reported | 0.25 | 1.55 | 0.74 | 3.22 | |
| Use of psychedelic drugs (reference: no usage) | |||||
| Use reported | 0.19 | 1.67 | 0.78 | 3.58 | |