Adapting the early recognition inventory ERIraos to Estonian: A validation study

Area of Science:

• Psychiatry
• Clinical Psychology
• Neuroscience

Background:

• Validated tools are crucial for early psychosis risk identification.
• The Early Recognition Inventory (ERIraos) offers a two-step approach for risk assessment.
• Assessing prodromal symptoms is key to timely intervention.

Purpose of the Study:

• To validate the Estonian version of the Early Recognition Inventory (ERIraos) for psychosis risk assessment.
• To evaluate the ERIraos Checklist for screening and the ERIraos Symptom List for detailed assessment.
• To determine the predictive accuracy of ERIraos in identifying individuals at risk for developing psychosis.

Main Methods:

• A prospective cohort study involving 177 participants aged 13-42 years.
• Participants were assessed using the ERIraos Checklist and ERIraos Symptom List.
• Risk severity was categorized into no increased risk and three risk groups.

Main Results:

• The ERIraos Symptom List demonstrated excellent inter-rater reliability.
• The ERIraos Checklist showed high accuracy in screening for psychosis risk (ROC-AUC = 0.86).
• The ERIraos Symptom List effectively predicted psychosis transition within two years (ROC-AUC = 0.83), with specific symptoms being significant predictors.

Conclusions:

• The Estonian ERIraos instrument is reliable and valid for early psychosis risk detection.
• ERIraos serves as a practical two-step tool for identifying individuals at high risk for psychosis.
• The findings support the use of ERIraos in clinical settings for early intervention strategies.