Table 3 Mann–Whitney U test results for selected quantitative variables, stratified by the surgical technique (open vs. closed) (N = 75).

From: The outcomes of Ilizarov treatment in aseptic nonunions of the tibia stratified by treatment strategies and surgical techniques

 

U

Z

p-value

η2

Length of hospital stay (days)

516.00

− 1.46

0.145

0.03

Ilizarov treatment duration (days)

576.50

− 0.78

0.433

0.01

ASAMI bone score

645.00

0.05

0.959

< 0.01

ASAMI functional score

457.50

2.51

0.012

0.08

Number of complications

563.00

− 1.17

0.240

0.02

  1. U and Z Mann–Whitney U test statistics, p-value level of significance, η2 (eta-squared) a measure of effect size for Mann–Whitney U test.
Back to article page