Txt Now 2 Decrease Pregnancies L8r: A Study to Evaluate the Effect of Daily Text Message Reminders on Pill Continuation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00677703
Recruitment Status : Completed
First Posted : May 14, 2008
Last Update Posted : November 19, 2012
Information provided by (Responsible Party):
Paula Castano, Columbia University

May 12, 2008
May 14, 2008
November 19, 2012
January 2008
April 2010   (Final data collection date for primary outcome measure)
contraceptive continuation [ Time Frame: 6 months ]
Same as current
Complete list of historical versions of study NCT00677703 on Archive Site
change in contraceptive knowledge scores [ Time Frame: 6 months ]
Same as current
Not Provided
Not Provided
Txt Now 2 Decrease Pregnancies L8r: A Study to Evaluate the Effect of Daily Text Message Reminders on Pill Continuation
The Effect of Text Message Reminders on Contraceptive Continuation, a Randomized Controlled Trial
Teen girls and young women taking birth control pills may forget to take their pills or may stop taking them altogether. This places them at risk for unintended pregnancies. Most young women own cell phones and use them for text messaging. We will test whether contraceptive continuation is affected after six months of daily text message reminders.

In 2000, there were 84 pregnancies for every 1,000 women aged 15 to 19 in the US (4). More than 90% of the resulting 900,000 teen pregnancies were unintended (6). Nationwide, teen pregnancy rates have dropped 28% since their peak in 1990 but dropped only 15% in Hispanic teens (4). New York state ranks 38th in the nation with 91 teen pregnancies per 1,000 teens. For Whites the teen pregnancy rate is only 52. Teen pregnancy rates are two to three times higher in Hispanics (130 pregnancies) and African Americans (167 pregnancies)(4). In New York City, the teen pregnancy rate is 99, even higher than the NY state and US rates (8).

Unintended pregnancy has long-term consequences that can disproportionately affect teens. Teen pregnancy negatively affects a teen's socioeconomic status. Pregnant teens are less likely to finish their education, more likely to be single parents and less likely to acquire work experience (9). Teen pregnancies are more likely to be medically complicated, with higher maternal and infant morbidity and mortality rates than in older pregnant women (10). Over one third of teen pregnancies end in abortion. Once a teen has one delivery, she is at increased risk to have another. Furthermore, a daughter of a teen pregnancy is more likely to have a teen pregnancy herself (11). Consistent contraceptive use is the only way to prevent pregnancy (and all of its consequences) in sexually-active teens. In a study of OC use in our population, 99% of the pregnancies that did occur were in women who had discontinued their OC during the study period (1).

The National Survey of Family Growth, a nationwide study examining contraceptive use in 2,271 teenagers, showed that 98% of sexually-active teenagers had used a contraceptive method at some time (12). Among teen contraceptors, 53% use oral contraceptives (OC) - the highest percentage among all age groups (12). The percentage of African American and Hispanic teens using contraception is lower than white teens (12). The World Health Organization estimates that half of patients take their medication improperly (13). One million of the United States' unintended pregnancies result from improper OC use, failure or discontinuation (14). Teens discontinue OCs because they experience side effects, misunderstand instructions for use and do not establish a pill-taking routine (3). In a study of OC use in inner city family planning clinics, we found discontinuation rates of 40% and 61% at three and six months, respectively (1). For the 595 teens in that study, discontinuation rates were 53% and 75% at three and six months, respectively. High discontinuation rates are also reported elsewhere (15-19). Improving OC continuation in the U.S. by just 10% can lead to a 7% reduction in unintended pregnancies and an annual savings of $280 million (1995 dollars) (14). Nationally, that could mean a reduction of unintended teen pregnancies by 63,000.

Wireless text messaging is a technology that was effective in improving medication adherence in clinical trials of vaccines and smoking cessation in Spain and South Africa (20,21). Text messaging has also been found to be more effective than telephone call-backs and scheduled clinic revisits in providing patients in London with lab results and decreasing the time for them to return to clinic for treatment (22). Cell phones have more recently become widespread in America and cell phone use continues to increase. A 2005 survey of wireless providers revealed that there were nearly 208 million wireless subscribers in the US, nearly 26 million more than in 2004 (23). Americans use cell phones for more than talking; they can use the text message function to share photos, to vote for reality television programming contestants, to receive daily jokes or to receive ring tones. Sixty-four percent of teens with cell phones use text messaging (24). Urban teen girls are more likely to use text messaging than boys or adults (24).

To assess cell phone use in our own population we carried out a survey of 2,521 racially-diverse reproductive-aged women, including 473 teens, attending family planning clinics in NYC. Cell phone usage was 77% among teens, and 81% of them read and send text messages (5). One-third of the participants in this feasibility survey worry about forgetting to take their medications and 30% would like to receive text message reminders for this (5). There are no studies of the effectiveness of text message reminders on contraceptive continuation rates.

Successful teen pregnancy prevention programs use varied, multifactorial approaches (2). We propose a study using an existing technology, text messaging, in an innovative way to improve OC continuation rates. Daily text messages will provide information regarding side effects, their management and instructions for troubleshooting common pill-taking mistakes. They may also help teens and young women establish a dosing routine.

Not Applicable
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Contraceptives, Oral
Other: Daily Text Messages

Text message reminders to take oral contraception daily:

Each text message will be a short educational message listing the benefits of contraceptive use and providing instructions for avoiding common medication errors.

Other Name: Text Messaging
  • No Intervention: Standard Care
    Participants will receive standard care without daily reminders.
  • Experimental: Text Messages
    Participants will receive a daily text message reminder for 6 months
    Intervention: Other: Daily Text Messages

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
July 2012
April 2010   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • aged <25 years requesting OC as their primary method of contraception
  • currently sexually active or anticipating sexual activity within the next 30 days
  • owns cell phone with text messaging capability

Exclusion Criteria:

  • contraindications to combined hormonal contraception per clinic protocol (e.g., hypertension)
  • previous participation in this study
Sexes Eligible for Study: Female
up to 24 Years   (Child, Adult)
Contact information is only displayed when the study is recruiting subjects
United States
Not Provided
Not Provided
Paula Castano, Columbia University
Columbia University
Not Provided
Principal Investigator: Paula M Castano, MD, MPH Columbia University
Columbia University
November 2012

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