Pregnancy outcome in Q fever-affected areas and areas not affected by Q fever
| Year | Area | 4-Digit postal- code areas (n) | Birth (n) | Preterm delivery (%)† | Child small for gestational age (%)‡ | Perinatal mortality (%) |
|---|---|---|---|---|---|---|
| 2003/2004 | Q fever | 307 | 42 686 | 6.1 | 10.4 | 0.9 |
| No Q fever | 921 | 109 012 | 6.3 | 10.2 | 1.0 | |
| 2008 | Q fever | 307 | 19 735 | 5.9 | 9.2* | 0.7* |
| No Q fever | 921 | 52 503 | 6.1 | 8.5* | 0.9* | |
| 2009 | Q fever | 307 | 19 936 | 5.9 | 9.3* | 0.6* |
| No Q fever | 921 | 53 221 | 6.1 | 8.6* | 0.7* | |
| 2010 | Q fever | 307 | 19 066 | 6.3 | 8.9 | 0.7 |
| No Q fever | 921 | 53 213 | 6.0 | 8.5 | 0.7 |
*p<0.05.
†Preterm delivery outcome was missing for: 2003/2004 (n=2095), 2008 (n=523), 2009 (n=656) and 2010 (n=537).
‡Child small for gestational age outcome was missing for: 2003/2004 (n=1918), 2008 (n=55), 2009 (n=549) and 2010 (n=545).