title: Evaluation of a pregnancy prevention programme using the Contraceptive Behavior Change model.
abstract: OBJECTIVE
  This paper is a report of the findings of a study to examine the effects of application of the Contraceptive Behavior Change model on knowledge, attitudes, perceived benefits and barriers, self-efficacy (SE), stages of change (SOC) and contraceptive behaviours.
  
  
  BACKGROUND
  Unintended pregnancy is a global issue; it is also a concern for the military, as it impacts on mission readiness. Effective sexuality education programmes are needed but, to date, an evaluation of existing programmes using a conceptual model is lacking in the health literature.
  
  
  METHODS
  A sample of 198 single, junior enlisted females was randomly recruited from United States of America Navy ships. An experimental design was adopted. The experimental group received two class sessions, 2 months apart, while the control group received none. The variables measured were: knowledge, attitudes, perceived benefits and barriers, SE, SOC and contraceptive behaviours. Data were collected on three separate occasions at 2-month intervals over a 4-month period in 2004-2005.
  
  
  RESULTS
  Initially, a striking lack of knowledge was evident among study participants. The experimental groups' knowledge increased statistically significantly with repeated interventions, while the control group's knowledge did not change over the same period. Both groups started with no pregnancies, and at the end of the study, the pregnancy rate between the two groups was statistically significant: experimental group 0%, and control group 14%.
  
  
  CONCLUSIONS
  The intervention led to increased knowledge, which in turn led to avoidance of pregnancy. The proposed model was appropriate for the evaluation and consequently can be considered as an effective tool to use for development or refinement of existing programmes.
authors.affiliation: Min S. Chung-Park PhD RN WHNP (CAPT NC USN) Command Nurse Researcher Naval Hospital Camp Pendleton, Camp Pendleton, California, USA.
authors.forename: Min S
authors.initials: MS
authors.lastname: Chung-Park
mesh_terms: D000293:Adolescent; D000328:Adult; D003267:Contraception / Q000523:psychology*; D003268:Contraception Behavior / Q000523:psychology*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008889:Military Personnel / Q000523:psychology; D008960:Models, Psychological; D011247:Pregnancy / Q000706:statistics & numerical data; D012736:Sex Education; D012725:Sexual Behavior; D014481:United States