Testing extra-linearity across a psychosis continuum.

ABSTRACT:

Background

It is unclear whether psychotic experiences (PEs) gradually merge into states of clinical psychosis along a continuum which correspond to a dimensional classification or whether latent classes appear above a certain severity threshold which correspond better to diagnostic categories of psychosis.

Methods

Annual cross-sectional surveys, 2014-19, among Chinese undergraduates (N = 47,004) measured PEs, depression and etiological risk factors using standardized self-report instruments. We created a psychosis continuum with five levels and tested linear and extra-linear contrasts in associated etiological risk factors, before and after adjustment for depression. We carried out latent class analysis.

Results

Categorical expression of psychosis, including hallucin

SUBMITTER: Coid JW 

PROVIDER: S-EPMC8594101 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature