By M.K. Baker
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Additional resources for Assessing the Psychosocial Risk Factors for Coronary Artery Disease: An Investigation of Predictive Validity for the Psychosocial Inventory for Cardiovascular Illness
The 25 PICI items that were administered to both the Healthy Group and the CAD Group were subjected to Principle Axis Factor Analysis with oblique rotation to account for the likelihood of correlated variables. Upon conducting the analysis, a three-factor solution emerged that was similar to the solution that emerged for the Healthy Group. The three factors included Negative Affect (a combination of the anxiety, depression, and stress items), Anger, and Social Isolation. The highest loading ten items were retained for the Negative Affect factor where the highest loading five items were retained to comprise the Anger and Social Isolation Factors.
Examination of internal consistency, factor structure and the bivariate correlation matrix yielded a shorter 25-item version of the PICI to be administered to a group of individuals who carry a diagnosis of coronary artery disease (CAD Group). The second phase of the current study (Phase II) was primarily concerned with the predictive validity of the PICI through administration to the CAD Group where PICI scores were examined in context of pathophysiological markers of CAD. The CAD Group was comprised of individuals who carried a diagnosis of CAD who presented to a regularly scheduled appointment with a private practice cardiologist.
Hypothesis 1 It is hypothesized that, when the Healthy Group’s and CAD Group’s responses to the PICI are combined, a five-factor solution will emerge that corresponds to the five psychosocial risk factors for CAD. Research Question 2 When comparing scores on the PICI for the CAD Group and the Healthy Group, does score on each of the PICI subscales (as determined by the factor analysis conducted in Research Question One) on the PICI independently predict group membership in the Healthy Group or the CAD Group?