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Table 3 Differences in foot posture measurements between the groups.

From: Foot posture in people with medial compartment knee osteoarthritis

Measure

Control (n = 28)

Knee OA (n = 32)

p value

Effect size (Cohen's d)

Foot posture index†

1.35 ± 1.43

2.46 ± 2.18

0.022*

d = 0.61 (medium)

Navicular height

0.24 ± 0.03

0.23 ± 0.03

0.542

d = 0.04 (negligible)

Navicular drop

0.02 ± 0.01

0.03 ± 0.01

0.019*

d = 1.02 (large)

Arch index

0.22 ± 0.04

0.26 ± 0.04

0.040*

d = 1.02 (large)

  1. Values are reported as mean ± SD.* significant at p < 0.05. † Rasch transformed FPI scores