Prediction of dietary adherence in cholesterol reduction: Relative contribution of personality variables and health attitudes

Abstract

The purpose of this study was to identify personality and health attitude variables that might predict adherence to a cholesterol-reducing diet. After taking a battery of psychological inventories, 66 subjects entered a 26 week diet program. Adherence indices included attendance rate at scheduled appointments, changes in diet, and changes in serum cholesterol levels. Of the 55 subjects with complete data, 7 dropped out, 7 attended inconsistently, and 41 completed the program. Drop-outs scored significantly lower on the Health Belief measures of seriousness, susceptibility, and benefits. Improvement in serum cholesterol was positively correlated with the Health Belief Benefits Scale and negatively correlated with the Health Locus of Control chance scale. Dietary reduction in saturated fat was positively associated with the Health Belief Seriousness and Benefits Scales. Health attitudes and beliefs were better predictors of adherence than personality trait measures.

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