Table 1 Distributions of anti-rubella antibodies in pregnant women by age
From: Rubella seroprevalence among pregnant women in Beijing, China
N, % (95% CI) | ||||||
|---|---|---|---|---|---|---|
N | Negative (< 8 IU/ml) | equivocal (8- < 11 IU/ml) | Positive (≥11 IU/ml) | Protective (≥10 IU/ml) | P | |
Total | 324 | 38 (11.7%; 8.7%–15.7%) | 19 (5.9%; 3.8%–9.0%) | 267 (82.4%; 77.9%–86.1%) | 270 (83.3; 78.9%-87.0%) | |
Age | ||||||
17-26y | 94 | 11 (11.7%; 6.7%-19.6%) | 5 (5.3%; 2.3%–11.9%) | 78 (83.0%; 74.1%–89.2%) | 79 (84.0%; 75.3%–90.1%) | 0.83 |
27-36y | 144 | 18 (12.5%; 8.1%- 18.9%) | 9 (6.3%; 3.3%–11.5%) | 117 (81.3%; 74.1%–86.8%) | 118 (81.9%; 74.9%–87.4%) | |
37-46y | 86 | 9 (10.5%; 5.6%- 18.7%) | 5 (5.8%; 2.5%–12.9%) | 72 (83.7%; 74.5%–90.0%) | 73 (84.9%; 75.8%–90.9%) | |