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Table 3 The study population according to age groups, BMI cut-offs, and overweight children

From: The relationship between paediatric foot posture and body mass index: do heavier children really have flatter feet?

Age No. children BMI – cut off points/age (IOTF) No. overweight children (mean FPI) No. overweight children with flatfeet for each FPI-6 cut-off
  Male Female   +6 +8 +10
3 21 17.89 17.56 5 (7.0) 3 3 0
4 23 17.55 17.28 1 (3.0) 0 0 0
5 40 17.42 17.15 10 (2.6) 0 0 0
6 37 17.55 17.34 11 (5.7) 3 1 1
7 31 17.92 17.75 11 (5.7) 4 1 1
8 176 18.44 18.35 63 (3.6) 10 1 0
9 63 19.10 19.07 67 (3.9) 16 3 1
10 110 19.84 19.86 37 (4.8) 11 8 4
11 126 20.55 20.74 39 (4.9) 17 11 1
12 80 21.22 21.68 24 (4.3) 9 7 1
13 13 21.91 22.58 4 (4.0) 1 1 0
14 6 22.62 23.34 0 0 0 0
15 1 23.29 23.94 0 0 0 0
Total no. children 728 - - 272 74 36 9
  1. The overweight children with flatfeet tapered at each FPI cut-off level: 74 (10.1 %) at FPI ≥ +6, 36 (4.9 %) at FPI ≥ +8, and 9 (1.2 %) at FPI ≥ +10