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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: J Clin Virol. 2016 May 10;80:93–97. doi: 10.1016/j.jcv.2016.05.003

Table 1.

Study demographics.

Characteristic Study Year, %
2003 2007 2013
Gender
 Female 54.5 54.0 55.0
 Male 45.5 46.0 45.0
Race
 White 26.4 26.9 29.4
 Black 69.0 67.3 63.1
 Other 4.6 5.9 7.6
Age
 18–24 9.8 10.5 11.3
 25–34 14.0 16.7 19.4
 35–44 22.2 20.1 15.3
 45–54 22.3 23.2 21.6
 ≥55 31.7 28.8 32.3
Total, no. 2,144 3,417 4,713

Note: 5 individuals had missing age data and 4 had missing gender data.