Table 1.
Characteristics of the sample (overall and by presence of multimorbidity)
| Multimorbidity | ||||||
|---|---|---|---|---|---|---|
| Total | No | Yes | ||||
| Characteristic | Unweighted N | Unweighted N | Unweighted N | |||
| Psychosis category | ||||||
| Control | 179,429 | 85.1 | 160,143 | 86.8 | 19,286 | 74.1 |
| Subclinical psychosisa | 25,493 | 13.8 | 19,883 | 12.4 | 5610 | 22.9 |
| Psychosis diagnosisb | 2224 | 1.1 | 1502 | 0.8 | 722 | 2.9 |
| Sex | ||||||
| Male | 93,358 | 49.4 | 84,268 | 51.2 | 9090 | 37.4 |
| Female | 115,846 | 50.6 | 98,964 | 48.8 | 16,882 | 62.6 |
| Age, years (Mean (SD)) | 38.4 (16.0) | 36.1 (14.5) | 53.5 (16.8) | |||
| Education | ||||||
| No formal | 48,343 | 26.4 | 39,043 | 24.5 | 9300 | 39.2 |
| Primary | 71,356 | 31.4 | 62,449 | 31.5 | 8907 | 31.0 |
| Secondary completed | 72,087 | 32.7 | 66,072 | 34.3 | 6015 | 22.4 |
| Tertiary completed | 17,287 | 9.5 | 15,564 | 9.8 | 1723 | 7.4 |
| Wealth (quintiles) | ||||||
| Poorest | 47,582 | 20.3 | 40,246 | 19.5 | 7336 | 25.5 |
| Poorer | 41,449 | 20.0 | 35,989 | 19.7 | 5460 | 21.9 |
| Middle | 37,705 | 19.8 | 33,350 | 20.0 | 4355 | 19.0 |
| Richer | 35,378 | 19.9 | 31,597 | 20.3 | 3781 | 17.2 |
| Richest | 33,305 | 19.9 | 30,111 | 20.5 | 3194 | 16.3 |
Data are percentages unless otherwise stated
aSubclinical psychosis refers to having at least one of delusional mood, delusions of reference and persecution, delusions of control, and hallucinations in the past 12 months but without a psychosis diagnosis
bPsychosis diagnosis refers to self-reported lifetime diagnosis of schizophrenia/psychosis
The differences in all sample characteristics between those with and without multimorbidity were statistically significant (P < 0.0001)