. Author manuscript; available in PMC: 2010 Jun 8.

Published in final edited form as: Am J Hum Biol. 2009 May-Jun;21(3):365–370. doi: 10.1002/ajhb.20892

TABLE 1.

Mean digit ratios derived from physical measurments, photocopies, printed scanned images, and computer-assisted image analysis

	Mean 2D:4D (± SD)
	Physical	Photocopy	Printed scan	Computer assisted
Males (n= 30)	0.966± 0.030^a	0.956± 0.035^b	0.955± 0.032^b	0.953± 0.033^b
Females (n= 30)	0.983± 0.029^a	0.973± 0.029^b	0.973± 0.028^b	0.968± 0.026^b
Overall Mean (n= 60)	0.974± 0.031^a	0.964± 0.033^b	0.964± 0.032^b	0.960± 0.031^b

Data for mean 2D:4D is derived from two repeated measurements made in the left and right hands of each participant. Significant differences for within row comparisons are denoted by different letters (P < 0.05).