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The Necessity-Concerns Framework: a Multidimensional Theory Benefits from Multidimensional Analysis

  • Original Article
  • Published:
Annals of Behavioral Medicine

Abstract

Background

Patients’ medication-related concerns and necessity-beliefs predict adherence. Evaluation of the potentially complex interplay of these two dimensions has been limited because of methods that reduce them to a single dimension (difference scores).

Purpose

We use polynomial regression to assess the multidimensional effect of stroke-event survivors’ medication-related concerns and necessity beliefs on their adherence to stroke-prevention medication.

Methods

Survivors (n = 600) rated their concerns, necessity beliefs, and adherence to medication. Confirmatory and exploratory polynomial regression determined the best-fitting multidimensional model.

Results

As posited by the necessity-concerns framework (NCF), the greatest and lowest adherence was reported by those necessity weak concerns and strong concerns/weak Necessity-Beliefs, respectively. However, as could not be assessed using a difference-score model, patients with ambivalent beliefs were less adherent than those exhibiting indifference.

Conclusions

Polynomial regression allows for assessment of the multidimensional nature of the NCF. Clinicians/Researchers should be aware that concerns and necessity dimensions are not polar opposites.

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Conflict of Interest

The authors have no conflict of interest to disclose

Funding

National Institute on Minority Health and Health Disparities [#5P60MD000270] and the National Center for Advancing Translational Sciences [UL1TR000067].

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Correspondence to L. Alison Phillips Ph.D.

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Phillips, L.A., Diefenbach, M.A., Kronish, I.M. et al. The Necessity-Concerns Framework: a Multidimensional Theory Benefits from Multidimensional Analysis. ann. behav. med. 48, 7–16 (2014). https://doi.org/10.1007/s12160-013-9579-2

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  • DOI: https://doi.org/10.1007/s12160-013-9579-2

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