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Table 1 Participant characteristics – values are mean (SD) unless otherwise stated

From: Reproducibility of foot dimensions measured from 3-dimensional foot scans in children and adolescents with Down syndrome

Characteristic Mean (SD)
Age, years 10.6 (3.9)
Females/males, n 18/12
Height (m) 1.30 (0.19)
Weight (kg) 40.1 (21.4)
BMI1 (kg/m2) 21.9 (6.7)
Type of Down syndrome, n (Trisomy 21 / Translocation) 27/3
Level of intellectual disability (unclear/mild/moderate/severe) 9/12/9/0
Presence of hallux valgus, n (%) 4 (13.0)
Presence of digital deformity, n (%) 14 (46.0)
Foot Posture Index2 8.8 (1.8)
Arch Index3 0.30 (0.05)
  1. 1Body mass index; 2Foot Posture Index; 3Arch Index. The Foot Posture Index scores range from −12 to + 12. Scores less than 1 indicate a supinated foot posture, scores between 1 and 7 indicate a normal foot posture, and scores greater than 7 indicate a pronated foot posture. Arch Index represents the ratio of the area of the middle third of a footprint to the entire footprint area, excluding the digits. Normal: 0.21 to 0.28, high: < 0.21 and low: > 0.28
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