Abstract 1361: Impact of Cardiovascular Disease Risk on the Association Between Dietary Supplement Use and Attempted Weight Loss in the US Adult Population
Background Studies have sought to identify the determinants of dietary supplement (DS) use. Few of these have been based on a conceptual model of health behavior, and most have involved small, non-random samples.
Objectives To evaluate a novel conceptual model developed to explain DS use and engagement in other cardio-protective behaviors (CBs) as a function of cardiovascular disease (CVD) risk.
Methods The model purported that
CVD risk would be positively associated with DS use and CB participation,
DS use and CB participation would be positively correlated, and
the association between DS use and CB participation would be moderated by CVD risk.
Data were taken from the 1999–2004 waves of the National Health and Nutrition Examination Survey. Participants were classified according to CVD risk as low-risk, at-risk, or diseased. DS use and attempted weight loss (AWL) were modeled as a function of CVD risk while adjusting for sociodemographic characteristics.
Results Persons at risk for CVD or with evidence of disease were more likely to engage in DS use and AWL than those with low CVD risk (Figure 1⇓). Differences between the at-risk and diseased groups were insignificant. AWL and DS use were positively correlated (p=0.005). Although the magnitude of this correlation increased with CVD risk (Figure 2⇓), there was no statistical support for moderation (p=0.484).
Conclusions The model provided an adequate description of associations among CVD risk, DS use, and CB participation. The results suggest that moderate CVD risk may trigger participation in healthy behaviors. Once CVD develops, further increases in behavioral participation may not accrue due to a perceived lack of benefit.