Table 1 Demographic characteristics of subjects in serological surveys of Beijing Residents in 2012 and 2008, PRC
Year 2012 (N = 2144) | Year 2008 (N = 1421) | P value | |
|---|---|---|---|
n (%) | n (%) | ||
Geographic regiona | <0.001 | ||
Urban | 440 (20.5) | 241 (17.0) | |
Suburb | 464 (21.6) | 476 (33.5) | |
Rural | 1240 (57.8) | 704 (49.5) | |
Gender | 0.007 | ||
Male | 1054 (49.2) | 632 (44.5) | |
Female | 1090 (50.8) | 789 (55.5) | |
Age | <0.001 | ||
<1 year | 196 (9.1) | 171 (12.0) | |
1-4 years | 208 (9.7) | 350 (24.6) | |
5-9 years | 225 (10.5) | 222 (15.6) | |
10-14 years | 219 (10.2) | 132 (9.3) | |
15-19 years | 221 (10.3) | 181 (12.7) | |
20-29 years | 430 (20.1) | 119 (8.4) | |
≥30 years | 645 (30.1) | 246 (17.3) | |
Residency | |||
Permanent residents | 1086 (50.7) | NA | |
Migrants | 1058 (49.3) | NA | |
Recalled Varicella History | |||
Acknowledge | 158 (7.4) | NA | |
Deny | 1986 (92.6) | NA | |