Table 2 Mean, standard deviation, maximum, minimum and p-values of statistical tests (2 sample t-test) of facial proportion indices

Upper face-face height index

63.27

2.58

56.73

70.79

63.92

2.36

58.35

70.19

0.031*

Lower face-face height index

56.75

2.44

50.34

62.69

55.25

2.59

48.06

60.95

0.000***

Mandibulo-face height index

36.73

2.58

29.21

43.27

36.08

2.36

29.81

41.65

0.031*

Mandibulo-upper face height index

58.33

6.54

41.25

76.26

56.66

5.80

42.47

71.37

0.028*

Mandibulo-lower face height index

64.69

2.83

57.98

72.07

65.29

2.63

58.64

70.64

0.075

Nasal index

77.12

5.69

64.32

93.83

73.99

6.54

60.70

93.94

0.000***

Upper lip height-mouth width index

52.02

6.47

37.09

71.21

49.36

6.21

36.46

67.05

0.001**

Cutaneous-total upper lip height index

62.16

6.84

40.72

77.17

61.99

6.82

44.58

77.63

0.838

Vermilion-total upper lip height index

37.84

6.84

22.83

59.28

38.01

6.82

22.37

55.42

0.837

Vermilion-cutaneous upper lip height index

63.00

19.83

29.58

145.59

63.30

18.37

28.81

124.32

0.898

Vermilion height index

76.61

12.08

55.26

120.75

82.21

19.80

44.59

175.00

0.005**

Chin-mandible height index

58.12

5.57

42.44

73.39

58.78

6.03

43.22

79.72

0.352

Upper face height-biocular width index

85.33

5.01

73.41

98.37

86.92

4.54

74.69

98.24

0.007**

Intercanthal-nasal width index

95.22

6.70

79.48

112.82

95.37

7.75

77.32

113.96

0.871

Nose -face height index

43.25

2.44

37.31

49.66

44.75

2.59

39.05

51.94

0.000***

Nose-mouth width index

86.22

7.03

68.69

109.87

84.70

7.02

70.98

109.49

0.075

Upper lip-upper face height index

31.65

2.31

25.60

37.19

30.02

2.55

24.28

35.99

0.000***

Upper lip-mandible height index

54.87

6.76

38.75

72.48

53.42

6.22

41.57

70.55

0.067

Upper lip-nose height index

46.46

4.96

34.41

59.21

43.08

5.26

32.07

56.23

0.000***

Lower lip-face height index

27.05

3.43

17.07

35.81

26.87

3.80

12.91

36.22

0.693

Lower lip-mandible height index

41.88

5.57

26.61

57.56

41.22

6.03

20.28

56.79

0.352

Lower lip-chin height index

73.66

17.05

36.25

135.63

71.94

18.03

25.44

131.40

0.421