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

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

DRKS

Registry ID

DRKS00015314

Enrollment

130

Registered

2018-08-29

Start date

2018-09-17

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

F63

Interventions

Group 1: Intervention group - The intervention consists of seven modules: Goal setting and motivational interviewing, impulse control, problem solving, cognitive restructuring, strengthening self-wort

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

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

Exclusion criteria

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

Design outcomes

Primary

Measure	Time frame
Internet Addiction Test (IAT) Assessments take place at baseline (T1 = before intervention start; before randomization), 7 weeks (T2), 6 months (T3) and 12 months (T4) after randomization.	—

Secondary

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

Measure

Time frame

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

—

Countries

Austria, Germany, Switzerland

Contacts

Public ContactKarina Saruhanjan

Friedrich-Alexander Universität Erlangen-Nürnberg Lehrstuhl für Klinische Psychologie und Psychotherapie

karina.saruhanjan@fau.de09131-85 67560

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 18, 2026