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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Learn Individ Differ. 2013 Feb 13;25:12–20. doi: 10.1016/j.lindif.2013.01.015

Table A1.

Distribution of Age.

Age (Years) Proportion of Sample
4 and Below 1.4%
5.00 4.6%
6.00 6.3%
7.00 7.0%
8.00 8.5%
9.00 10.3%
10.00 11.3%
11.00 8.5%
12.00 7.2%
13.00 6.7%
14.00 6.0%
15.00 6.3%
16.00 6.4%
17.00 4.8%
18 and Above 3.3%