Relationship among patients' perceived capacity for communication, health literacy, and diabetes self-care.

The mechanisms underlying the relations among health literacy, perceived capacity for communication, diabetes knowledge, and diabetes self-care are unclear. This study tested this relation using structural equation modeling with a sample of 137 Chinese patients 65 years of age or older with type 2 diabetes. The model showed that health literacy, knowledge, communication capacity, and diabetes self-care formed complex relations. After adjusting for age, education, and Chinese cultural influence, health literacy affected diabetes self-care indirectly through perceived capacity for communication (standardized estimate coefficient=.641, p<.001) but not diabetes knowledge. To enhance self-care, interventions should be tailored to increase patient health literacy and perceived capacity for communication with health care providers. Training should be provided to patients to enhance their communication abilities.