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. 2015 Oct 27;6(4):157–161. doi: 10.15171/jlms.2015.11

Table 1 . Baseline Characteristics of Patients With Chronic LBP in Both Groups .

Parameter MIPE
n = 35
LLLT
n = 35
P Vale a
Mean SD Mean SD
Age (y) 38.4 10.3 42.1 12.8 .08
Onset since first episode (y) 4.6 3.9 6.1 4.2 .07
BMI 26.4 4.5 25.2 4.1 .42
Sex 60% female –40% male 66% female – 34% male

Abbreviations: LBP, low back pain; MIPE, monochromatic infrared photo energy; LLLT, low level laser therapy; BMI, body mass index.

a P values are for baseline differences between the 2 groups. Significance level ≤ .05.