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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Pediatr Infect Dis J. 2015 Mar;34(3):289–295. doi: 10.1097/INF.0000000000000562

Table 1.

Sociodemographic characteristics of the study population, children born 2004 – 2011 who were over 8 months of age at data collection, Tianjin, China.

n Frequency (%)
Total 205,982 100
Sex
        Male 110,321 53.6
        Female 95,661 46.4
Area of residence
        Coastal 30,896 15.0
        Rural 62,949 30.6
        Suburban 42,536 20.7
        Urban 69,601 33.8
Birth year
        2004 15,882 7.7
        2005 19,222
        2006 21,380 10.4
        2007 25,692 12.5
        2008 27,356 13.3
        2009 31,140 15.1
        2010 32,107 15.6
        2011 33,203 16.1