Table 2

The FPI range which refer to foot posture categories were collated for each year of age

Age
(years)
No/age (years)FPI-6 total score—foot posture category cut-offs
SupinatedNormalPronatedHigh pronatedMean FPISDRange
321241416.383.0311
420151226.72.6011
5555341334.152.8112
638829213132144.452.8015
753651296164254.32.9316
847348271131234.012.9516
962574362175143.822.7716
1049762291123213.692.8615
1137750194119144.243.0216
1214424654874.223.2314
13331171235.182.9810
1422412603.143.4012
15263121104.193.3112
Total3217354 (11%)1776 (55.2%)960 (29.84%)127 (3.95%)4.2316
  • The median FPI total score across the study population was 4 (3) points, with the trend of reduced FPI with increased age confirmed.

  • FPI, foot posture index.