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Table 4 Results of Krustal-Wallis analysis used to test for significant differences between patient characteristics for separate definitions of low back pain (“non-specific/mechanical low back pain with no potential nerve root involvement”, “non-specific/mechanical low back pain with potential nerve root irritation” and “low back pain attributed to secondary factors”)

From: The prevalence of low back pain in the emergency department: a descriptive study set in the Charles V. Keating Emergency and Trauma Centre, Halifax, Nova Scotia, Canada

Characteristics

No Potential Nerve - Potential Nerve

No Potential Nerve - Secondary

Potential Nerve - Secondary

Age

<

<

<

p < 0.001

p < 0.001

p < 0.001

Sex (More Females)

No difference

<

No difference

p = 0.279

p < 0.001

p = 0.416

Length of stay

No difference

<

<

p = 0.514

p < 0.001

p < 0.001

CTAS (Higher = less severe)

>

>

>

p < 0.005

p < 0.001

p < 0.001

Hospital admissions

<

<

<

p < 0.001

p < 0.001

p < 0.001