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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: J Youth Adolesc. 2010 Aug 6;40(3):278–295. doi: 10.1007/s10964-010-9580-z

Table 2.

Demographic Characteristics of MYS Cohorts

Cohort
1998 1999 2000 2001 2002 2003 2004 2005 2006
Mean age 13.6 13.2 12.6 12.8 12.6 12.5 12.3 12.8 12.8
Percent male 51.0 53.4 52.4 49.5 51.3 52.3 49.4 53.5 50.4
Percent African American 94.9 93.7 94.6 94.3 92.2 94.4 95.1 93.8 93.0
Percent living in public housing 62.2 57.1 55.0 44.8 50.1 50.5 47.4 31.9 26.2
Percent receiving free or reduced cost lunch 93.0 91.5 92.6 90.6 87.1 91.4 91.1 90.5 88.0