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. 2020 Oct 19;21:695. doi: 10.1186/s12891-020-03714-3

Table 1.

Demographic and baseline characteristics comparison of patients with chronic LBP with trigger point on quadratus lumborum muscle between ESWT or corticosteroid TPI groups (n = 54)

Characteristics ESWT
(n = 27)
Corticosteroid TPI
(n = 27)
P value
Gender (female) 20 (74.1%) 17 (63.0%) 0.379a
Age, yrs 44.74 ± 9.34 45.04 ± 11.86 0.919b
BMI, kg/m2 27.47 ± 1.44 26.20 ± 2.06 0.110b

Note: The data are presented as mean ± standard deviation or frequency (percentage)

Abbreviation: ESWT Extracorporeal shockwave, TPI Trigger point injection, BMI Body mass index

Symbol: a P obtained from Chi-Square test, bP obtained from Independent samples t-test