Table 2. The length sample distribution of unshod feet and shod feet.

Unit: (mm)		<220	220–230	230–240	240–250	250–260	260–270	270<	Sum.
Unshod feet	Male	0	3(3.3%)	3(3.3%)	12(13.4%)	54(60%)	6(6.6%)	12(13.4%)	90
	Female	0	6(7.7%)	36(46.2%)	24(30.8%)	12(15.3%)	0	0	78
Shod feet	Male	0	0	8(6.2%)	28(21.5%)	40(30.8%)	28(21.5%)	26(20%)	130
	Female	4(6.1%)	10(15.2%)	36(54.5%)	14(21.2%)	2(3%)	0	0	66

Note: number (percentage).