Validation of the Korean version of the 16-Item Prodromal Questionnaire in a Non-Help-Seeking College Population

Psychiatry Investigation
Sung-Wan KimJin-Sang Yoon

Abstract

To examine the reliability and validity of the Korean version of the 16-item Prodromal Questionnaire (KPQ-16) in non-help-seeking university students. Among 2,246 university students participated in the initial screening, 257 subjects with KPQ-16 scores ≥4 were interviewed. The criteria for ultra-high risk (UHR) of psychosis of the Comprehensive Assessment of At-Risk Mental States (CAARMS) were the gold standard for diagnosis. An exploratory modified version of the questionnaire (mKPQ-16), to which three items from the Eppendorf Schizophrenia Inventory were added, was also used to compensate for items on thought and cognitive problems. Seventeen subjects met the CAARMS criteria for UHR of psychosis. The area under the receiver operating characteristic curve (AUROC) was highest for the mKPQ-16 total score (AUROC=0.831, p<0.001). The use of cutoff total scores of 7 for the mKPQ-16 and 6 for the KPQ-16 resulted in the best balance of sensitivity (76.5% and 64.7%, respectively) and specificity (75.4% and 71.2%, respectively). The Korean versions of the PQ-16 are good instruments for screening for psychosis risk in university students. This validation of a questionnaire version with a small number of items may make it feasible to sc...Continue Reading

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Oct 19, 2017·Psychiatry Investigation·Sung-Wan KimJin-Sang Yoon

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Citations

Dec 29, 2019·Early Intervention in Psychiatry·Clare HowieCiaran Mulholland
Nov 25, 2020·Early Intervention in Psychiatry·Sung-Wan KimIl-Seon Shin
Apr 16, 2021·Frontiers in Psychiatry·Renata Pionke-UbychŁukasz Gawęda

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