Recruitment for phase II of the trials of hypertension prevention. Effective strategies and predictors of randomization

Jack F. Hollis, Suzanne Satterfield, Fraser Smith, Mona Fouad, P. Scott Allender, Nemat Borhani, Jeanne Charleston, Margo Hirlinger, Nancy King, Robert Schultz, Beverly Goodwin Sousoulas

Research output: Contribution to journalArticle

Abstract

Phase II of the Trials of Hypertension Prevention is a multicenter, randamized, controlled trial designed to determine the efficacy of weight loss and reduction of sodium intake for lowering blood pressure and incidence of hypertension among persons with high-normal levels of blood pressure. The 2 × 2 factorial study design includes weight loss alone, restricted sodium intake alone, the combination of weight loss and sodium restriction, and a control group. Nine clinical centers used a variety of recruitment strategies to enroll 2382 participants over 17 months, which exceeded the sample size goal of 2250. Among randomized participants, 21% were minorities and 34% were women. Overall, direct mail generated the most randomized participants (73%), followed by community screening (12%) and media advertisement (11%). Referrals from community health care providers yielded few participants, Prescreening improved overall efficiency and reduced costs. Participants who were more likely to drop out voluntarily during the three-visit screening regimen tended to be younger, single, male, smokers, and less educated.

Original languageEnglish (US)
Pages (from-to)140-148
Number of pages9
JournalAnnals of epidemiology
Volume5
Issue number2
DOIs
StatePublished - Mar 1995

Keywords

  • Hypertension
  • clinical trial
  • prevention
  • recruitment
  • sodium
  • weight

ASJC Scopus subject areas

  • Epidemiology

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    Hollis, J. F., Satterfield, S., Smith, F., Fouad, M., Scott Allender, P., Borhani, N., Charleston, J., Hirlinger, M., King, N., Schultz, R., & Sousoulas, B. G. (1995). Recruitment for phase II of the trials of hypertension prevention. Effective strategies and predictors of randomization. Annals of epidemiology, 5(2), 140-148. https://doi.org/10.1016/1047-2797(94)00058-2