A Randomized Comparative Study between High-Intensity and Low-Level Laser Therapy in the Treatment of Chronic Nonspecific Low Back Pain
Table 2
The differences in mean values within and between groups pre- and postintervention.
Variables
Preintervention
Postintervention
Mean difference (95% CI)
value
ODI
LLLT
36.5 ± 12.7
17.8 ± 6.4
18.75 (16.8 to 20.6)
<0.001
HILT
37.3 ± 11.3
18.5 ± 7.2
18.8 (16.77 to 20.8)
<0.001
Control
36.2 ± 12.3
34.6 ± 11.8
1.6 (−1.4 to 5.3)
0.395
value
0.726
<0.001
—
—
VAS
LLLT
6.5 ± 1.7
3.4 ± 0.9
3.1 (2.5 to 3.6)
<0.001
HILT
6.3 ± 1.9
3.5 ± 0.8
2.8 (2.4 to 3.2)
<0.001
Control
6.6 ± 1.6
5.9 ± 1.8
0.7 (0.19 to 1.2)
0.293
value
0.534
<0.001
—
—
Lumbar ROM
LLLT
17.3 ± 2.2
20.4 ± 1.7
−3.1 (−2.5 to −3.6)
<0.001
HILT
16.9 ± 2.1
20.6 ± 1.8
−3.7 (−2.8 to −4.1)
<0.001
Control
17.6 ± 2.5
17.9 ± 2.4
−0.3 (−0.39 to −0.21)
0.082
value
0.623
<0.001
—
—
Total EuroQol
LLLT
32.5 ± 8.4
72.8 ± 9.7
−40.3 (−45.6 to −36.7)
<0.001
HILT
35.7 ± 9.6
74.3 ± 10.4
−38.6 (−42.3 to −35.4)
<0.001
Control
35.4 ± 8.8
38.6 ± 9.2
−3.2 (−5.3 to −1.4)
0.079
value
0.463
<0.001
—
—
Variables are presented as means ± standard deviations; significant at value <0.05; ODI: Oswestry Disability Index; VAS: visual analogue scale; ROM: range of motion; EuroQol: European Quality of Life score.
