Journal
PSYCHIATRY RESEARCH
Volume 257, Issue -, Pages 352-357Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.psychres.2017.07.074
Keywords
Addiction; Screening; Psychometrics; Cut-off; Diagnosis
Categories
Funding
- Korean Mental Health Technology R & D Project, Ministry of Health & Welfare, Republic of Korea [HM14C2567]
- Institute for Information & communications Technology Promotion (IITP) grant - Korea government (MSIP) [B0132-15-1003]
- Original Technology Research Program for Brain Science through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [NRF-2016M3C7A1947307]
- Ministry of Public Safety & Security (MPSS), Republic of Korea [B0132-15-1003] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The aim of this study was to develop a screening questionnaire that could distinguish individuals at high risk of smartphone overuse from casual users. The reliability, validity, and diagnostic ability of the Smartphone Overuse Screening Questionnaire (SOS-Q) were evaluated. Preliminary items were assessed by 50 addiction experts online, and 28 questions were selected. A total of 158 subjects recruited from six community centers for internet addiction participated in this study. The SOS-Q, Young's internet addiction scale, Korean scale for internet addiction, and Smartphone Scale for Smartphone Addiction (S-Scale) were used to assess the concurrent validity. Construct validity was supported by a six-factor model using an exploratory factor analysis. The internal consistency and the item-total correlations were favorable (alpha = 0.95, r = 0.35-0.81). The test-retest reliability was moderate (r = 0.70). The SOS-Q showed superior concurrent validity with the highest correlation between the S-Scale (r = 0.76). Receiver operating characteristic curve analysis revealed an area under the curve of 0.877. A cut-off point of 49 effectively categorized addiction high-risk group with a sensitivity of 0.81 and specificity of 0.86. Overall, the current study supports the use of SOS-Q as both a primary and supplementary measurement tool in a variety of settings.
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