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Table 5 Comparison of results for static posturography obtained in the second form of tandem position in the THR and control groups (Student’s t-testa, Welch testb, Mann-Whitney test)

From: Does total hip replacement impact on postural stability?

  

2TOF vs. 2TC

2TNF vs. 2TC

variable

group

mean (SD)

min - max

median

p

mean (SD)

min - max

median

p

Y (mm/s)

THR control

13.12 (3.08)

7.3–19.8

13.4

0.099

13.20 (3.69)

7.5–23.3

12.7

0.165

12.05 (3.84)

7.5–21.2

11.1

12.05 (3.84)

7.5–21.2

11.1

X (mm/s)

THR control

17.37 (4.31)

10.5–27.8

16.75

0.106a

17.74 (4.43)

9.7–27.5

17.5

0.055a

15.61 (4.00)

7.8–24.2

14.7

15.61 (4.00)

7.8–24.2

14.7

spectrum Y (Hz)

THR control

0.402 (0.159)

0.164–0.833

0.351

0.423a

0.437 (0.245)

0.186–1.266

0.375

0.348

0.433 (0.135)

0.216–0.707

0.440

0.433 (0.135)

0.216–0.707

0.440

spectrum Y (mm)

THR control

0.468 (0.139)

0.280–0.851

0.427

0.695

0.454 (0.129)

0.306–0.835

0.432

0.923

0.436 (0.074)

0.330–0.589

0.432

0.436 (0.074)

0.330–0.589

0.432

spectrum X (Hz)

THR control

0.441 (0.171)

0.199–1.010

0.416

0.657

0.448 (0.150)

0.213–0.863

0.418

0.229b

0.409 (0.088)

0.246–0.549

0.419

0.409 (0.088)

0.246–0.549

0.419

spectrum X (mm)

THR control

0.472 (0.102)

0.298–0.706

0.444

0.089a

0.468 (0.118)

0.266–0.805

0.465

0.147a

0.426 (0.105)

0.207–0.664

0.421

0.426 (0.105)

0.207–0.664

0.421