title: Tailored interventions for screening mammography among a sample of initially non-adherent women: when is a booster dose important?
abstract: OBJECTIVE
  To assess added value of a booster dose of a tailored mammography intervention.
  
  
  METHODS
  Participants, non-adherent at baseline, were randomly assigned to usual care or one of three tailored interventions. Intervention group members (n=657) were further randomly assigned to receive/not receive a booster intervention dose. Electronic record mammography data were collected following initial intervention and at 6 and 15 months post-booster.
  
  
  RESULTS
  Booster had no effect among women not screened after first intervention dose (n=337). Among women screened after initial dose (n=320), booster predicted re-screening at 6 but not 15 months. A boosterxrace interaction showed a booster effect at 6 months for African Americans (OR=4.66, p=.0005) but not Caucasians (OR=0.74, p=.44).
  
  
  CONCLUSIONS
  Findings suggest if a first-dose intervention does not facilitate screening, neither will a booster dose. However, among women for whom a first dose is effective, boosters can facilitate timely repeat adherence, especially among African Americans. At 6 months booster recipients were less likely to be off-schedule but, by 15 months, the groups were similar.
  
  
  CONCLUSIONS
  Boosters may effect when, but not whether, women continue screening.
authors.affiliation: Department of Surgery, Duke University Medical Center and Program in Prevention, Detection & Control Research, Duke University Comprehensive Cancer, 2424 Erwin Rd, Ste 602, DUMC 2715, Durham, NC 27705, USA. skinn008@mc.duke.edu
authors.forename: Celette Sugg
authors.initials: CS
authors.lastname: Skinner
authors.forename: Sarah C
authors.initials: SC
authors.lastname: Kobrin
authors.forename: Patrick O
authors.initials: PO
authors.lastname: Monahan
authors.forename: Joanne
authors.initials: J
authors.lastname: Daggy
authors.forename: Usha
authors.initials: U
authors.lastname: Menon
authors.forename: Helen Smith
authors.initials: HS
authors.lastname: Todora
authors.forename: Victoria L
authors.initials: VL
authors.lastname: Champion
mesh_terms: D001741:Black or African American / Q000193:education / Q000208:ethnology; D000368:Aged; D000704:Analysis of Variance; D015709:Correspondence as Topic; D004522:Educational Status; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007196:Indiana; D016015:Logistic Models; D008327:Mammography / Q000523:psychology*; D008403:Mass Screening / Q000523:psychology*; D008923:Missouri; D010347:Patient Care Planning / Q000458:organization & administration; D011446:Prospective Studies; D017010:Reminder Systems / Q000592:standards*; D012959:Socioeconomic Factors; D013689:Telephone; D016312:Treatment Refusal / Q000208:ethnology / Q000523:psychology*; D044465:White People / Q000193:education / Q000208:ethnology; D014930:Women / Q000193:education / Q000523:psychology*