Effectiveness of Low-Level Laser Therapy in Patients with Discogenic Lumbar Radiculopathy: A Double-Blind Randomized Controlled Trial

Table 6

Correlation analysis among pain intensity, functional disability and ROM outcomes of experimental and control groups.

		Pain intensity			Functional disability			Lumbar flexion			Lumbar extension
Groups	Outcomes	r	Sig. (two-tailed)	R-squared linear	r	Sig. (two-tailed)	R-squared linear	r	Sig (two-tailed)	R-squared linear	r	Sig. (two-tailed)	R-squared linear
Group A	Pain intensity	1			−0.081	0.55	0.007	−0.425	0.00	0.18	0.227	0.09	0.051
	Functional disability	−0.081	0.55	0.007	1			−0.033	0.80	0.001	−0.059	0.66	0.004
Group B	Pain intensity	1			-0.063	0.64	0.004	–0.081	0.55	0.007	–0.209	0.12	0.044
	Functional disability	–0.063	0.64	0.004	1			0.085	0.53	0.007	–0.065	0.63	0.004

Pearson correlation coefficient: r < 0.4, weak or no relationship; 0.5 < r < 0.7, moderate relationship; and r > 0.7, strong relationship.