Right | Middle | Left | |||||||
Male | Female | p | Male | Female | p | Female | Male | p | |
Vertical grooves | 14.0 | 13.1 | <0.001 | 61.5 | 45.4 | <0.05 | 5.6 | 7.9 | 0.710 |
Intermittent vertical grooves | 6.3 | 2.1 | 8.4 | 6.5 | 3.5 | 3.1 | |||
Forked grooves | 74.1 | 67.7 | 15.4 | 23.7 | 72.7 | 65.6 | |||
Intersecting grooves | 4.9 | 12.7 | 1.4 | 4.1 | 14.7 | 17.9 | |||
Reticular grooves | 0.7 | 2.4 | 11.2 | 17.9 | 2.1 | 3.4 | |||
Others | 0.0 | 2.1 | 2.1 | 2.4 | 3.5 | 3.1 |