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Table 2 The study population according to age groups, and flatfeet

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

Age (years) No. children No. children with flatfeet/FPI-6 cut-off level
+6 +8 +10
3 21 15 11 1
4 23 14 8 1
5 40 14 6 3
6 37 15 6 2
7 31 13 9 3
8 176 56 7 1
9 63 26 13 6
10 110 40 26 12
11 126 54 32 3
12 80 35 20 7
13 13 5 3 2
14 6 2 1 0
15 1 1 0 0
Total no. children 728 290 142 41
  1. It is evident that at the increasing FPI cut-off levels, that the numbers of children with flat feet diminished: FPI +6 - 290 (39.8 %); FPI +8 - 142 (19.5 %); FPI +10 – 41 (5.6 %)