. Author manuscript; available in PMC: 2011 Apr 1.

Published in final edited form as: Cytokine. 2010 Feb 1;50(1):24–29. doi: 10.1016/j.cyto.2009.12.002

Table 1. Demographic variables of the study population.

Variable		Result
Median age at enrollment, years (IQR^a)		15.0 (13.0,17.0)
Median age at first rubella immunization, months (IQR^a)		15.0 (15.0,16.0)
Median age at second rubella immunization, years (IQR^a)		11.0 (5.0,12.0)
Median time from second rubella immunization to enrollment, years (IQR)		5.8 (3.8,7.4)
Gender, N (%)
	Male	396 (53.7)
	Female	342 (46.3)
Race, N (%)
	Others	66 (8.9)
	White	672 (91.1)

IQR=inter-quartile range (1^st quartile – 3^rd quartile)