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Table 2 Statistical analysis of CA and EDA of the age group in boys and girls (in years)

From: The applicability of Willems dental age estimation method for Indonesian children population in Surabaya

Gender

Age group

Chronological age (CA)

Estimated dental age (EDA)

Age difference

Mean

SD

Mean

SD

Mean

SD

Sig.

Remarks

Boys

6–10

9.45

1.28

9.61

1.68

0.16

0.88

0.431

Overestimate

11–14

12.13

0.95

11.88

0.87

− 0.25

0.73

0.088

Underestimate

Girls

6–10

9.60

1.03

9.72

1.42

0.13

0.99

0.472

Overestimate

11–14

12.65

0.89

12.11

1.27

− 0.54*

0.91

0.002*

Underestimate*

  1. *Significant difference