Right | Middle | Left | |||||||
Male | Female | p | Male | Female | p | Female | Male | p | |
Vertical grooves | 26.6 | 14.8 | <0.001 | 16.1 | 7.9 | <0.05 | 21.0 | 15.1 | <0.001 |
Intermittent vertical grooves | 0.7 | 5.5 | 2.8 | 3.4 | 2.8 | 4.8 | |||
Forked grooves | 53.8 | 38.1 | 22.4 | 17.9 | 64.3 | 49.1 | |||
Intersecting grooves | 9.1 | 25.8 | 4.2 | 10.3 | 9.1 | 21.6 | |||
Reticular grooves | 9.8 | 8.9 | 50.3 | 57 | 2.8 | 6.5 | |||
Others | 0.0 | 6.9 | 4.2 | 3.4 | 0.0 | 2.7 |