Efficacy and cost-effectiveness of an internet intervention for internet use disorder: a randomized controlled trial

Phase 4

• Conditions: F63; Habit and impulse disorders

• Registration Number: DRKS00015314
• Lead Sponsor: ehrstuhl für Klinische Psychologie und Psychotherapie Friedrich-Alexander Universität Erlangen-Nürnberg

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2018-08-29
• Study Completion: 2021-03-15
• Results First Posted: 2023-10-05
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Complete
• Sex: All
• Target Recruitment: 130

Inclusion Criteria

IAT > 48
- Internet access
- Valid email adress
- Providing informed consent

Exclusion Criteria

- Age < 18
- Receiving another psychological treatment
- Suffering from a severe mental disorder
- High risk of suicide

Study & Design

• Study Type: interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Internet Addiction Test (IAT)<br>Assessments take place at baseline (T1 = before intervention start; before randomization), 7 weeks (T2), 6 months (T3) and 12 months (T4) after randomization.

Secondary Outcome Measures

Name	Time	Method
Questionnaires:<br>Assessment at baseline, post-treatment, 6-months follow-up & 12-months follow-up:<br>CIUS - Compulsive Internet Use Scale<br>PHQ-9 - Patient Health Questionnaire <br>GAD-7 - Generalized Anxiety Disorder 7-item<br>PSWQ-3 - Penn State Worry Questionnaire-Ultra Brief Version<br>AUDIT-C - The Alcohol Use Disorders Identification Test<br>KFG - Gambling Short Questionnaire <br>PSQI - Pittsburgh Sleep Quality Index<br>UWES - Utrecht Work Engagement Scale<br>AQoL-8D - The Assessment of Quality of Life instruments<br>WHO-5 - Well-being index<br>WLQ - Work Limitations Questionnaire<br>GPS-K - General Procrastionation Scale - Short Version<br><br>Assessment at baseline (T1):<br>Mini-SPIN - Social Phobia Inventory<br>RSES - Rosenberg Self-Esteem Scale<br><br>Assessment at post-treatment (T2):<br>CSQ-8 - Client Satisfaction Questionnaire<br><br>Assessment at baseline and both follow-up's (T1, T3, T4)<br>TiC-P - Trimbos questionnaire for Costs associated with Psychiatric illness<br>