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Table 7 The table showing the descriptive statistics of the test sample, according to the age groups

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

N

Calendrical age (CA) (years)

CTR

Estimated age (EA) (years)

EA-CA (years)

Mean

SD

Mean

SD

Mean

SD

Mean

SD

F

df

Sig*

I

16

5.54

0.84

3.23

0.25

4.74

0.95

–0.80

0.46

4.625

3

0.006

II

12

8.50

0.80

2.53

0.27

7.45

1.05

–1.05

0.44

III

13

11.64

1.03

1.74

0.33

10.50

1.28

–1.14

0.48

IV

11

14.17

0.54

1.16

0.18

12.73

0.68

–1.44

0.35

Total

52

9.57

3.41

2.26

0.84

8.50

3.25

–1.08

0.48

  1. SD standard deviation
  2. *Significant at p<0.05