Method

Sex estimation

Undetermined

Accuracy rate

Accuracy

All ten variables (M1)

Male

93.7% (74/79)

6.3% (5/79)

92.4% (73/79)

98.6% (73/74)

Female

94.4% (67/71)

5.6% (4/71)

94.4% (67/71)

100% (67/67)

Total

94.0% (141/150)

6.0% (9/150)

93.3% (140/150)

99.3% (140/141)

Combination of eight variables, except DCOX and SCOX (M2)

Male

91.1% (72/79)

8.9% (7/79)

89.9% (71/79)

98.6% (71/72)

Female

94.4% (67/71)

5.6% (4/71)

94.4% (67/71)

100% (67/67)

Total

92.7% (139/150)

7.3% (11/150)

92.0% (138/150)

99.3% (138/139)

The best combination of four variables—PUM, SPU, DCOX, and IIMT (M3)

Male

92.4% (73/79)

7.6% (6/79)

92.4% (73/79)

100% (73/73)

Female

88.7% (63/71)

11.3% (8/71)

88.7% (63/71)

100% (63/63)

Total

90.7% (136/150)

9.3% (14/150)

90.7% (136/150)

100% (136/136)

Four variables from the central parts of the bone—IIMT, SS, SA, and SIS (M4)

Male

50.6% (40/79)

49.4% (39/79)

50.6% (40/79)

100% (40/40)

Female

32.4% (23/71)

67.6% (48/71)

30.9% (22/71)

95.6% (22/23)

Total

42.0% (63/150)

58.0% (87/150)

41.3% (62/150)

98.4% (62/63)

Combination of first nine variables except for VEAC (M5)

Male

94.9% (75/79)

5.1% (4/79)

93.7% (74/79)

98.7% (74/75)

Female

95.8% (68/71)

4.2% (3/71)

95.8% (68/71)

100% (68/68)

Total

95.3% (143/150)

4.7% (7/150)

94.7% (142/150)

99.3% (142/143)

Combination of first eight variables, except SIS and VEAC (M6)

Male

93.7% (74/79)

6.3% (5/79)

92.4% (73/79)

98.6% (73/74)

Female

95.8% (68/71)

4.2% (3/71)

95.8% (68/71)

100% (68/68)

Total

94.7% (142/150)

5.3% (8/150)

94.0% (141/150)

99.3% (141/142)

The worst combination of four variables—SIS, SA, SS, and VEAC (M7)

Male

43.5% (67/154)

56.5% (87/154)

42.9% (66/154)

98.5% (66/67)

Female

81.2% (108/133)

18.8% (25/133)

80.4% (107/133)

99.0% (107/108)

Total

61.0% (175/287)

39.0% (112/287)

60.3% (173/287)

98.9% (173/175)