Table 3: Precision of age estimation and overestimation by age group. Two groups of age (17-18 and 18-19) were reunited because of the low number of individuals.

Age group (years)

Size (n)

Precision at +/- 12 months (%)

Precision at +/- 18 months (%)

Over-estimation (%)

(9-10)

12

91

91

66

(10-11)

15

66

100

6

(11-12)

9

55

66

33

(12-13)

19

42

52

47

(13-14)

5

20

40

20

(14-15)

8

87

87

75

(15-16)

14

92

100

7

(16-17)

5

0

20

0

(17-19)

5

20

20

20