TABLE 5.

Multiple regression analysis of the combined influence of clinical characteristics and treatment of type variables on WOMAC in patients with KOA.

Variables	B	SE	β	t	P
Constant	29.67	12.10	−	2.45	0.018
Type of treatment*	−6.47	2.07	−0.349	−3.12	0.003
Sex*	−5.52	2.96	-0.23	−1.87	0.068
Age	0.31	0.12	0.33	2.61	0.012
BMI	0.26	0.29	0.11	0.87	0.389
K-L Grade*	3.62	1.64	0.27	2.22	0.031

Model summary: r = 0.328; p < 0.001.

Coefficient B indicates the number of units that the dependent variable increases by for each increase in the unit of the independent variable. SE, is the standard error. The coefficient β is the standardized coefficient B. WOMAC, Western Ontario and McMaster Universities Arthritis Index; KOA, knee osteoarthritis; BMI, body mass index; K-L; Kellgren-Lawrence; *The hyaluronic acid group, the male, and Kellgren-Lawrence grade I served as the control group, respectively. Boldface indicates the significant differences in p value.

The bold values indicate a significant difference in the dependent variable caused by the change in the independent variable.