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Randomized Controlled Trial
. 2009 Sep;14(Pt 3):473-87.
doi: 10.1348/135910708X360700. Epub 2008 Sep 20.

Five factor model personality factors moderated the effects of an intervention to enhance chronic disease management self-efficacy

Peter Franks  1 , Benjamin Chapman, Paul Duberstein, Anthony Jerant
Affiliations
Randomized Controlled Trial

Five factor model personality factors moderated the effects of an intervention to enhance chronic disease management self-efficacy

Peter Franks et al. Br J Health Psychol. 2009 Sep.

Abstract

Objectives: Peer led interventions can enhance patient self-efficacy for managing chronic illnesses, but little is known regarding the moderators or duration of their effects. We hypothesized Homing in on Health (HIOH), a variant of the Chronic Disease Self-Management Program, would be most effective in patients high in neuroticism and low in extraversion, openness, agreeableness, and/or conscientiousness.

Design: Analysis of data from subjects (N=415) enrolled in an ongoing randomized controlled trial.

Methods: Regression analyses were conducted to explore whether Five Factor Model (FFM) personality factors moderated the effects of HIOH, delivered in subjects' homes or via telephone, on disease management self-efficacy. Data were collected at 6 time points over the course of 1 year.

Results: Compared with control and telephone HIOH, home HIOH significantly increased self-efficacy, an effect peaking at 6 weeks and fully attenuating by 1 year. Moderation analyses revealed the benefit was confined to patients higher in neuroticism and/or lower in conscientiousness, agreeableness, and extraversion.

Conclusions: A peer led intervention to enhance disease management self-efficacy had only short-term effects, and FFM personality factors moderated those effects. Measuring personality factors in chronically ill individuals may facilitate targeting of self-management interventions to those most likely to respond.

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Figures

Figure 1
Figure 1
Flow of subjects through study.
Figure 2
Figure 2
Relationships among intervention group (home vs. phone vs. control) and time (baseline, 2, 4, and 6 weeks, 6 months, and 1 year) at each time point 95% confidence intervals are shown.
Figure 3
Figure 3
Relationships among intervention group (home vs. other [phone + control]), time (baseline, 2, 4, and 6 weeks, 6 months, and 1 year), and personality factor: (a) Neuroticism; (b) Conscientiousness; (c) Agreeableness; and (d) Extraversion at each time point 95% confidence intervals are shown.
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