Table 1.
Year | Study population | IgG positive | Mean age (years) | ||
---|---|---|---|---|---|
n | % | 95% CI | |||
2004 | 526 | 220 | 41·8 | 37·7–46·1 | 28·0 |
2005 | 1262 | 518 | 41·0 | 38·4–43·8 | 28·3 |
2006 | 1191 | 481 | 40·4 | 37·6–43·2 | 28·2 |
2007 | 1048 | 453 | 43·2 | 40·2–46·2 | 28·7 |
2008 | 1050 | 435 | 41·4 | 38·5–44·4 | 28·8 |
2009 | 1013 | 380 | 37·5 | 34·6–40·5 | 28·9 |
2010 | 899 | 389 | 43·3 | 40·1–46·5 | 29·0 |
2011 | 1006 | 380 | 37·8 | 34·8–40·8 | 29·2 |
2012 | 286 | 108 | 37·8 | 32·3–43·5 | 29·7 |
Total | 8281 | 3364 | 40·6 | 39·6–41·7 | 28·7 |
n, Number of women; CI, confidence interval.