@article{ref1,
title="Item response theory and differential item functioning analyses with the Suicidal Behaviors Questionnaire-Revised in US and Chinese samples",
journal="Crisis",
year="2021",
author="Yiu Huen, Jenny Mei and Yip, Paul Siu Fai and Osman, Augustine and Man Leung, Angel Nga",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="BACKGROUND: Despite the widespread use of the Suicidal Behaviors Questionnaire-Revised (SBQ-R) and advances in item response theory (IRT) modeling, item-level analysis with the SBQ-R has been minimal. Aims: This study extended IRT modeling strategies to examine the response parameters and potential differential item functioning (DIF) of the individual SBQ-R items in samples of US (N = 320) and Chinese (N = 298) undergraduate students. <br><br>METHOD: Responses to the items were calibrated using the unidimensional graded response IRT model. Goodness-of-fit, item parameters, and DIF were evaluated. <br><br>RESULTS: The unidimensional graded response IRT model provided a good fit to the sample data. <br><br>RESULTS showed that the SBQ-R items had various item discrimination parameters and item severity parameters. Also, each SBQ-R item functioned similarly between the US and Chinese respondents. In particular, Item 1 (history of attempts) demonstrated high discrimination and severity of suicide-related thoughts and behaviors (STBs). Limitations: The use of cross-sectional data from convenience samples of undergraduate students could be considered a major limitation. <br><br>CONCLUSION: The findings from the IRT analysis provided empirical support that each SBQ-R item taps into STBs and that scores for Item 1 can be used for screening purposes.<p /> <p>Language: en</p>",
language="en",
issn="0227-5910",
doi="10.1027/0227-5910/a000837",
url="http://dx.doi.org/10.1027/0227-5910/a000837"
}