Skip to main content

Table 4 The gender-wise frequency distribution and the descriptive statistics of variables in the study sample (N=145)

From: Does the crypt: tooth ratio in the developing tooth correlate with chronological age in children?—a novel, radiographic, cross-sectional pilot study using ImageJ tools

Group

Boys (n=72)

Girls (n=73)

Correlation coefficient

n

%

Age (years)

CTR

Correlation coefficient

n

%

Age (years)

CTR

Mean

SD

Mean

SD

r

Sig*.

Mean

SD

Mean

SD

r

Sig*.

I

20

27.8

5.74

0.84

2.881

0.51

−0.747

0.000

18

24.7

5.63

0.75

2.969

0.70

−0.710

0.001

II

18

25

8.52

0.73

2.00

0.16

−0.682

0.002

20

27.4

8.71

0.94

1.882

0.20

−0.644

0.002

III

19

26.4

11.53

0.85

1.550

0.20

−0.533

0.019

18

24.7

11.37

0.79

1.519

0.11

−0.798

0.000

IV

15

20.8

13.99

0.59

1.244

0.20

−0.747

0.001

17

23.3

13.87

0.63

1.154

0.14

−0.851

0.000

Total

72

100

9.68

3.17

1.97

0.69

−0.916

0.000

73

100

9.81

3.13

1.892

0.77

−0.886

0.000

  1. *Significant at P<0.05. CTR crypt to tooth area ratio, SD standard deviation