Q-single: Linking functional impairment to problematic internet use through a single-question approach

Jakiene, Vilma and Király, Orsolya and Demetrovics, Zsolt and Podlipskyte, Aurelija and Saudargiene, Ausra and Jusiene, Roma and Milasauskiene, Egle and Gecaite-Stonciene, Julija and Palaityte-Urbone, Evelina and Burkauskas, Julius and Steibliene, Vesta (2025) Q-single: Linking functional impairment to problematic internet use through a single-question approach. JOURNAL OF BEHAVIORAL ADDICTIONS, 14 (2). pp. 738-745. ISSN 2062-5871

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Abstract

Background Short versions of problematic internet use (PIU) questionnaires may provide a convenient and effective way of assessing internet-related problems in various contexts, ranging from research to clinical practice. The aim of this study was to investigate whether single yes/no question (Q-single) regarding “functional impairment due to PIU” could serve as a screening tool to indicate the potential absence of PIU, given the lack of functional impairment. Methods Data from two online studies (N = 524 and N = 272) assessing internet-related behaviors among students were used for the analyses. Participants completed questionnaires (the nine-item Problematic Internet Use Questionnaire [PIUQ-9], the Compulsive Internet Use Scale [CIUS], the nine-item Patient Health Questionnaire, depression module [PHQ-9], the seven-item Generalized Anxiety Disorder scale [GAD-7]), questions about their internet use time, besides answering the Q-Single question. Block-wise multiple linear regression analyses were used to determine the predictive effect of the Q-Single on PIU (as measured with the PIUQ-9 and the CIUS) and its association with depression and anxiety symptom scores (as measured with the PHQ-9 and the GAD-7). Results The Q-Single demonstrated a high negative predictive value in screening the absence of PIU, however positive predictive value was low to moderate. Q-Single proved to be a good predictor of PIU (β = 0.484, p < 0.001 [PIUQ-9] and β = 0.481, p < 0.001 [CIUS]) when controlling for age, gender, and internet use time. Adjusting for the same controlling variables, the Q-Single had a moderate association with depression symptoms (β = 0.385, p < 0.001 [PHQ-9]) and anxiety symptoms (β = 0.252, p < 0.001) [GAD-7]) supporting the validity of the single-question instrument. Conclusions The finding that a single question could predict absence of PIU in students, implies that functional impairment is an important indicator of PIU.

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