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Published on: September 27, 2020
Does a self-management education program have the same impact on emotional and functional dimensions of HRQoL?
Grégory Moullec1, Hélène Favreau, Kim L Lavoie
1Montreal Behavioural Medicine Centre, Hôpital du Sacré-Coeur de Montréal -a University of Montreal affiliated hospital, Québec, Canada.
Abstract:
Most previous research evaluating the effect of interventions on HRQoL in COPD patients has focused on measuring HRQoL using aggregated questionnaire scores, increasing the risk of false-negative results. There is also evidence to suggest that self-evaluations of functional status are less likely to be modified over time relative to self-evaluation of emotional status. This study was a secondary analysis of a prospective study that compared the efficacy of a self-management education program (SM) on emotional and functional dimensions of HRQoL. One hundred and ten patients were recruited from the Sacré-Coeur Hospital of Montreal (Canada). Patients were included in either the SM group (n = 60) or the usual-care group (UC, n = 50). The SM group underwent a 4-week intervention based on content featured in "Living Well with COPD" program. Patients were assessed pre and 12-months post-intervention; the primary outcome was net change in the emotional and functional subscales scores of the St-George's Respiratory Questionnaire (SGRQ) and Short-Form health survey questionnaire (SF-36). Only the emotional dimension scores of both the SGRQ (impact) and the SF-36 (mental component summary) were statistically and clinically improved in the SM group compared to UC. Also, the 12-month adjusted between-group difference in the SGRQ-impact scores was 3-fold higher than the minimum clinically important difference in SM vs. UC patients. HRQoL needs to be regarded as a combination of distinct self-evaluations with unique dynamics over time. This distinction should be taken into account in program development and evaluation, to choose intervention components likely to impact on both types of self-evaluations related to HRQoL.
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