Psychotic symptoms in the general population

Surveys of unselected general population samples have shown that a large number of individuals report any experience resembling the clinical psychosis concept. The Internet can be an effective medium for collection of such epidemiological large-scale psychology- and psychiatry-related data.

Project description

The main questions are:

  • What is the co-morbidity between sub-clinical positive psychotic symptoms and depression, the relationship to season of birth and complications around childbirth?
  • Is it possible to ask for positive psychotic symptoms in a web-based questionnaire in the general population?

Project leader


Christina Hultman

Phone: +46-(0)8-524 838 96
Organizational unit: Department of Medical Epidemiology and Biostatistics (MEB), C8

Main financing: Karolinska Institutet Funds (KI fonder); Swedish Research Council for Working Life and Social Research


Organisation Name
Institute of Public Health, Helsinki Sebastian Therman
Department of Medical Epidemiology and Biostatistics Jan-Eric Litton


Psychiatric disorders