title: The hookup: collaborative evaluation of a youth sexual health program using text messaging technology.
abstract: BACKGROUND
  The Hookup is a collaborative project reaching young people in California with valuable sexual and reproductive health information and linkage to local resources. Due to limited access to subscriber contact information, it has been a challenge to evaluate the program.
  
  
  OBJECTIVE
  The aims of this study were to determine the feasibility of using text messaging (short message service, SMS) as an evaluation tool for an educational text message-based program and to evaluate the program itself.
  
  
  METHODS
  All subscribers of The Hookup were sent four survey questions via SMS about age, gender, location, referral source and behavior change. An incentive was offered for completing the survey and an opt-out option was provided in the initial message.
  
  
  RESULTS
  All existing subscribers of The Hookup (N=2477) received a request to complete the survey using the SMS application on their mobile phones. A total of 832 (33.6%) subscribers responded to the initial question and 481 (20%) answered all four questions. Of the responses, 85% were received in the first two hours of the initial request. Respondents who answered the question about behavior change, 90% reported having made some positive change since subscribing to Hookup, including getting tested for STDs and HIV.
  
  
  CONCLUSIONS
  The survey methodology initiated a high response rate from The Hookup subscribers. The survey was able to provide data about subscribers in a short time period at minimal cost. The results show potential for using mobile SMS applications to evaluate SMS campaigns. The findings also support using SMS to provide young people with sexual health prevention messaging and linkage to health services.
authors.affiliation: Internet Sexuality Information Services, Inc (dba YTH), Oakland, CA, United States. sheoran@yth.org.
authors.forename: Bhupendra
authors.identifier: http://orcid.org/0000-0003-4107-0104
authors.initials: B
authors.lastname: Sheoran
authors.forename: Rebecca A
authors.identifier: http://orcid.org/0000-0001-9644-2433
authors.initials: RA
authors.lastname: Braun
authors.forename: Jenna Patrice
authors.identifier: http://orcid.org/0000-0001-7274-0508
authors.initials: JP
authors.lastname: Gaarde
authors.forename: Deborah K
authors.identifier: http://orcid.org/0000-0001-7761-6493
authors.initials: DK
authors.lastname: Levine
keywords: HIV; SMS; STDs; mobile phone; program evaluation; sexual health; text messaging; youth