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SMS Turkey: Harnessing the Power of Text Messaging to Promote Smoking Cessation (SMS Turkey)

This study has been completed.
Sponsor:
Collaborators:
Hacettepe University
John E. Fogarty International Center (FIC)
Information provided by (Responsible Party):
Center for Innovative Public Health Research
ClinicalTrials.gov Identifier:
NCT00912795
First received: May 19, 2009
Last updated: August 11, 2016
Last verified: August 2016

May 19, 2009
August 11, 2016
December 2010
September 2011   (final data collection date for primary outcome measure)
Carbon Monoxide-verified Continuous Abstinence at 12 Weeks [ Time Frame: 12-weeks post-quit day ] [ Designated as safety issue: No ]
self-reported continuous abstinence since quit day (<=5 cigarettes) verified with carbon monoxide reading (<=8ppm)
Number of participants enrolled in the intervention and retained through 12-week follow-up [ Time Frame: 8-month ] [ Designated as safety issue: No ]
Complete list of historical versions of study NCT00912795 on ClinicalTrials.gov Archive Site
  • CO-verified 7-day Point Prevalence Abstinence at 4 Weeks [ Time Frame: 4 weeks ] [ Designated as safety issue: No ]
    self-reported continuous abstinence in the past 7 days at 4 weeks (<=5 cigarettes) verified with carbon monoxide reading (<=8ppm)
  • Self-reported 7-day Point Prevalence Abstinence at 12 Weeks [ Time Frame: 12 weeks ] [ Designated as safety issue: No ]
    self-reported smoking abstinence in the past 7 days at 12 weeks (<=5 cigarettes)
  • Self-reported 30-day Point Prevalence Abstinence at 12 Weeks [ Time Frame: 12 weeks ] [ Designated as safety issue: No ]
    self-reported smoking abstinence in the past 30 days at 12 weeks (<=5 cigarettes)
Percent of participants who have not smoked a cigarette in the past 7 days [ Time Frame: 12-week post-quit day ] [ Designated as safety issue: No ]
Not Provided
Not Provided
 
SMS Turkey: Harnessing the Power of Text Messaging to Promote Smoking Cessation
SMS Turkey: Harnessing the Power of TXT Messaging to Promote Smoking Cessation
The purpose of this study is to develop and test a text messaging-based smoking cessation program for adults who are currently smoking and want to quit, living in Turkey.

Smoking has long been recognized as a significant public health concern associated with great morbidity and mortality. Although smoking rates have decreased in high income countries, these trends have not been noted for tow and middle income countries. This is especially true in Turkey, which was ranked 6th in the world in smoking consumption. Between 51-63% of Turkish men and 24-26% of Turkish women 15 years of age and older are smokers. With lung cancer the leading cancer-related cause of death for both men and women, effective and accessible smoking cessation interventions are needed. Cell phone technology represents a unique opportunity to deliver evidenced-based smoking cessation behavioral treatments through a delivery mechanism already widely adopted by adults. An estimated 35 million Turks were using cell phones, making them 1.8 times more common than land lines. Cell phone interventions are a unique delivery method because of their 'always on' capability. The rapid uptake of cell phones allows us to potentially reach those who might otherwise not utilize smoking cessation services.

We designed and evaluated SMS Turkey, an evidenced-based smoking intervention that takes advantage of technologies adopted by adult smokers in Turkey. The primary outcome measure is sustained abstinence 12 weeks after quit day, confirmed with a carbon monoxide (CO) reading of 8 ppm or less. Sustained abstinence was defined as 5 or fewer cigarettes smoked since the quit date, per West et al. Secondary outcome measures included: 7-day and 30-day point prevalence of smoking behavior at 3 months; CO-verified 7-day point prevalence at 4 weeks; and reduction in cigarettes per day for those who are smoking at 3 months.

Interventional
Not Provided
Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Smoking
Behavioral: SMS Turkey

6-week smoking cessation program delivered via daily text messages

SMS Turkey: 6-week smoking cessation program delivered via text messaging. SMS Turkey content is guided by the Cognitive Behavioral Therapy (CBT) theory.

Content was tailored based on participant's stage in quitting (i.e., pre-quit, quit day, early-quit, late-quit, relapse). Based on the typical relapse trajectory, content paths were created for participants based on whether or not they were smoking 2 days after quit day; and again at 7 days after quit day.

Depending on the participant's content path, the total number of messages received ranged from 91 (for those assigned to the encouragement arm) to 146 (for those who relapsed and then were assigned to the late quit messages).

Other Name: Cebiniz birakin diyor
  • Experimental: SMS Turkey
    6-week smoking cessation program delivered via daily text messages
    Intervention: Behavioral: SMS Turkey
  • No Intervention: Brochure control
    7-page brochure that provided general information and tips on how to quit smoking

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
151
September 2011
September 2011   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • 18 years of age or older
  • Currently smoking every day
  • Owning a TXT-capable cell phone
  • Sent or received TXT messages at least once in the past year
  • Living in Ankara (to ease technology support if necessary)
  • Agreement to set quit day in 15 days from enrollment date
  • Agreement to verification of smoking cessation using a carbon monoxide breath monitor

Exclusion Criteria:

• No chronic disease.

Both
18 Years and older   (Adult, Senior)
Yes
Contact information is only displayed when the study is recruiting subjects
Turkey
 
NCT00912795
ISK-NIH-FIC7918, 5R01TW007918
No
No
Not Provided
Center for Innovative Public Health Research
Center for Innovative Public Health Research
  • Hacettepe University
  • John E. Fogarty International Center (FIC)
Principal Investigator: Michele Ybarra, MPH PhD Center for Innovative Public Health Research
Center for Innovative Public Health Research
August 2016

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP