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. Author manuscript; available in PMC: 2012 Feb 24.
Published in final edited form as: Psychiatry Res. 2005 Jun 30;135(3):203–216. doi: 10.1016/j.psychres.2005.04.003

Table 2.

CDC norms for male and female children by age groups used in the present analysis

P50 P75 P85 P90 P95 P97
16.68 18.26 19.39 20.33 22.11 23.64 8- to 11-year-old males
16.87 18.69 19.96 21.01 22.93 24.54 8- to 11-year-old females
16.77 18.47 19.68 20.67 22.52 24.09 Mean all
19.14 21.18 22.61 23.79 25.96 27.78 12- to 15-year-old males
19.30 21.62 23.27 24.62 27.16 29.30 12- to 15-year-old females
19.22 21.40 22.94 24.21 26.56 28.54 Mean all
21.56 23.79 25.30 26.49 28.62 30.30 16- to 18-year-old males
21.07 23.59 25.43 26.98 29.98 32.64 16- to 18-year-old females
21.31 23.69 25.36 26.73 29.30 31.47 Mean all

P50 refers to the 50th percentile.