A tailored behavioral intervention to promote adherence to the DASH diet

Maria Antonia Rodriguez, Jennifer P. Friedberg, Ana DiGiovanni, Binhuan Wang, Judith Wylie-Rosett, Sangmin Hyoung, Sundar Natarajan

Research output: Contribution to journalArticle


Objectives: In this study, we evaluated the effects of a Transtheoretical model (TTM)-based tailored behavioral intervention (TBI), a non-tailored intervention (NTI) or usual care (UC) on: (1) the Dietary Approaches to Stop Hypertension (DASH) dietary pattern in 533 individuals with uncontrolled hypertension; and (2) the change from baseline to 6 months in proportion of participants in action or maintenance stages of change (SOC). Methods: This was a randomized clinical trial. Diet was evaluated using the validated Harvard DASH score calculated from Willett Food Frequency Questionnaires (range 8-40). The randomized groups were compared using the Wilcoxon rank-sum test, with adjustment for clustering by physician and baseline DASH scores. Results: At 6 months, compared to UC, TBI had a 1.28 point increase in DASH score (p ≤ .01) while NTI was not significant. At 6- month follow-up, TBI was more effective in advancing dietary SOC when compared to UC (56% vs 43%, p < .01) and NTI was not effective (46% vs 43%, p = .64). Conclusions: A phone-delivered tailored TTM-based intervention achieved greater improvement in DASH score and dietary SOC, suggesting that TTM-based tailored interventions can increase patients’ dietary adherence.

Original languageEnglish (US)
Pages (from-to)659-670
Number of pages12
JournalAmerican Journal of Health Behavior
Issue number4
StatePublished - Jan 1 2019


  • Adherence
  • Dietary Approaches to Stop Hypertension (DASH) diet
  • Hypertension
  • Telemedicine
  • Transtheoretical Model of Behavior Change

ASJC Scopus subject areas

  • Health(social science)
  • Social Psychology
  • Public Health, Environmental and Occupational Health

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  • Cite this

    Rodriguez, M. A., Friedberg, J. P., DiGiovanni, A., Wang, B., Wylie-Rosett, J., Hyoung, S., & Natarajan, S. (2019). A tailored behavioral intervention to promote adherence to the DASH diet. American Journal of Health Behavior, 43(4), 659-670. https://doi.org/10.5993/AJHB.43.4.1