Chao Li, Yue Cao, James S. Krause
College of Health Professions, Medical University of South Carolina, Charleston, SC, USA
Objective: To develop a latent structural model to demonstrate the relationship between factor structures of health behaviors and current pressure ulcer status among participants with spinal cord injury.
Design: A sample of 2547 participants with traumatic spinal cord injury of at least 1-year duration were recruited from a large specialty hospital in the Southeastern USA, with data analyzed in a Southeastern medical university.
Methods: Multiple latent health behavior indicators were developed, including: (1) alcohol consumption, (2) smoking, (3) unhealthy nutrition, (4) fitness, (5) spinal cord injury health activities, and (6) healthy nutrition. All these latent health behaviors were further linked with a higher dimension classified as risk and protective dimensions. Dichotomized current pressure ulcer status was included as the main outcome measure. Latent variable structural equation modeling was performed to assess the relationship between health behaviors and current pressure ulcer status.
Results: The model fit indices for the hypothetical model were acceptable for the suggested level (χ2=2054.547, df=267, χ2/df=7.69, P<0.0001, root mean square of approximation=0.051, comparative fit index=0.919, Tucker Lewis index=0.909). The protective behavior dimension had a significant direct effect on current pressure ulcer status (direct effect= –0.581, P=0.01). All indirect effects of healthy behaviors (fitness, spinal cord injury health activities, and healthy nutrition) on pressure ulcer via the protective behavior dimension were also significant. Alcohol consumption, smoking, and unhealthy nutrition had significant direct effects on the risk behavior dimension but insignificant indirect effects on current pressure ulcer status through the risk behavior dimension.
Conclusions: The overall findings of this study suggest the need to enhance healthy behaviors and reduce risk behaviors to prevent pressure ulcers among people living with spinal cord injury.
Financial Support: The contents of this presentation were developed under grants from the US Department of Health and Human Services Administration for Community Living, NIDILRR grant numbers 90RT5003 (NIDRR # H133B090005). However, those contents do not necessarily represent the policy of the Department of Health and Human Services, and you should not assume endorsement by the Federal Government.
