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Table 2 Cohen’s effect size (d) analysis for all statistical comparisons

From: Regional differences between superficial and deep lumbar multifidus in patients with chronic lumbar spine pathology

Measurement

Effect size

Area fraction fat

0.11

Area fraction muscle

0.34

Area fraction collagen

0.14

Dense collagen

0.64

Loose collagen

0.85

Type I fiber area

0.01

Type II fiber area

0.33

Distribution type I

0.04

Distribution type IIa

0.13

Distribution type IIx

0.09

% centralized nuclei

0.21

% Pax7+

0.29

% von Willebrand factor+

0.69

Degeneration

0.20

MRI fat signal fraction

0.04