Snow Control

ISRCTN	ISRCTN93702927
DOI	https://doi.org/10.1186/ISRCTN93702927
Protocol serial number	#001
Sponsor	Swiss Office for the Coordination of Addiction Facilities (INFODROG) (Switzerland)
Funder	Swiss Office for the Coordination of Addiction Facilities (INFODROG) (Switzerland) (Nr. 4962/09/ZHZ/WSOK)

Submission date: 18/03/2011
Registration date: 06/05/2011
Last edited: 19/09/2019

Recruitment status: No longer recruiting
Overall study status: Completed
Condition category: Mental and Behavioural Disorders

Prospectively registered

Protocol

Statistical analysis plan

Results

Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Dr Michael Schaub
Scientific

Konradstrasse 32
Zurich
8031
Switzerland

Email	michael.schaub@isgf.uzh.ch

Study information

Primary study design	Interventional
Study design	Randomised controlled trial
Secondary study design	Randomised controlled trial
Study type	Participant information sheet
Scientific title	Snow Control: a web-based self-help tool to reduce dependence in problematic cocaine users a randomized controlled trial
Study acronym	SC
Study objectives	A web-based cognitive-behavioral self-help tool is more effective in reducing cocaine dependence than an active control condition
Ethics approval(s)	Local Ethics Committee of the Canton of Zurich December 1, 2009 (reference number: KEK-StV-Nr. 70/09)
Health condition(s) or problem(s) studied	Cocaine use/misuse/dependence
Intervention	1. Snow Control in the intervention group is a six week self-help intervention tool to reduce cocaine consumption 2. Snow Control in the intervention group is based on classical cognitive behavioural therapy (CBT) approaches for: 2.1. Cocaine addiction 2.2. Motivational interviewing for cocaine using individuals 2.3. Principles of self control 2.4. Relapse-Prevention Model 3. It is structured into three parts and includes the following eight modules that will be activated for access week by week with three additional voluntary modules (module 5, 6 and 7) that can be activated during week 5-6 4. In the control condition, participants receive 8 psycho-educative information on the risks, potential harms and other important information on their cocaine consumption also in a weekly manner within 6 weeks of intervention. After having read this information they participate in a weekly quiz to control their information knowledge. 5. Follow up will be at 6 months for both groups after the 6 intervention weeks
Intervention type	Other
Primary outcome measure(s)	Severity of Dependence Scale SDS
Key secondary outcome measure(s)	1. Cocaine Craving Questionnaire Brief (CCQ-B) 2. Simplified version of the Beck Depression Inventory (BDI-V) 3. Alcohol, tobacco and other substance use (last 30 days)
Completion date	31/08/2011

Eligibility

Participant type(s)	Patient
Age group	Adult
Sex	All
Target sample size at registration	160
Total final enrolment	196
Key inclusion criteria	1. Age between 17 - 65 2. High speed internet access
Key exclusion criteria	1. Beck Depression Inventory (BDI)-V>45 2. Suicidal thoughts
Date of first enrolment	01/05/2010
Date of final enrolment	31/08/2011

Locations

Countries of recruitment

Austria
Germany
Switzerland

Study participating centre

Konradstrasse 32

Zurich
8031
Switzerland

Results and Publications

Individual participant data (IPD) Intention to share	No
IPD sharing plan summary	Not provided at time of registration
IPD sharing plan

Study outputs

Output type	Details	Date created	Date added	Peer reviewed?	Patient-facing?
Results article	results	28/11/2012	19/09/2019	Yes	No
Protocol article	protocol	25/09/2011		Yes	No
Participant information sheet	Participant information sheet	11/11/2025	11/11/2025	No	Yes
Study website	Study website	11/11/2025	11/11/2025	No	Yes

Editorial Notes

19/09/2019: The following changes have been made:
1. Publication reference added.
2. The final enrolment number has been added from the reference.