Sodium Intake, Dietary Knowledge, and Illness Perceptions of Controlled and Uncontrolled Rural Hypertensive Patients

Table 5

Multiple linear regressions of knowledge and illness perception in sodium intake variations (adjusted to energy intake).

Variables	Multiple linear regressions				𝑅^2	Adjusted 𝑅 square
	Beta	Std. error	𝑡	𝑃 value
Controlled group (𝑁=433)
Model 1
Illness perception	−0.232	2.4	−4.9	𝑃<0.001	0.136	0.132
Knowledge	−0.222	6.7	−4.7	𝑃<0.001
Model 2	Model 1 + weight, age, diseases duration, gender				0.152	0.140
Uncontrolled group (𝑁=238)
Model 1
Illness perception	−0.362	3.6	−3.6	𝑃<0.001	0.472	0.467
Knowledge	−0.346	5.5	−3.4	𝑃=0.001
Model 2	Model 1 + weight, age, diseases duration, gender				0.498	0.485