Trajectories of perceived social support in acute coronary syndrome
Perceived social support is known to be an important predictor of health outcomes in patients with acute coronary syndrome (ACS). This study investigates patterns of longitudinal trajectories of patient-reported perceived social support in individuals with ACS.
Data are from 3013 patients from the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease registry who had their first cardiac catheterization between 2004 and 2011. Perceived social support was assessed using the 19-item Medical Outcomes Study Social Support Survey (MOS) 2 weeks, 1 year, and 3 years post catheterization. Group-based trajectory analysis based on longitudinal multiple imputation model was used to identify distinct subgroups of trajectories of perceived social support over a 3-year follow-up period.
Three distinct social support trajectory subgroups were identified, namely: “High” social support group (60%), “Intermediate” social support group (30%), and “Low” social support subgroup (10%). Being female (OR = 1.67; 95% CI = [1.18–2.36]), depression (OR = 8.10; 95% CI = [4.27–15.36]) and smoking (OR = 1.70; 95% CI = [1.23–2.35]) were predictors of the differences among these trajectory subgroups.
Although the majority of ACS patients showed increased or fairly stable trajectories of social support, about 10% of the cohort reported declining social support. These findings can inform targeted psycho-social interventions to improve their perceived social support and health outcomes.
KeywordsPerceived social support Patient-reported outcome Acute coronary syndrome Longitudinal trajectories
This research was supported by the University of Calgary O’Brien Institute of Public Health.
Compliance with ethical standards
Conflict of interest
The authors declare that there’s no conflict of interest.
Ethics approval was obtained from the University of Calgary Conjoint Health Research Ethics Board (REB14-1320).
Informed consent was obtained from all subjects included in the study.
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