From: Identification of sex from footprint dimensions using machine learning: a study on population of Punjab in Pakistan
Foot toe 1
Ball breadth index
Heel breadth index
Male
Female
N
142
138
Mean
23.9
21.7
38.2
37.9
20.2
20.3
SD
1.2
0.8
1.9
2.1
1.7
Range
20.58–27.65
19.6–24.26
33.75–44.73
32.1–44.1
16.55–25.21
15.19–24.37