Table 1.
Ectopic pregnancy rate and treatment setting among women aged 15–44 years, Group Health Cooperative, 1993–2007
| Years | |||||
|---|---|---|---|---|---|
| 1993–1995 | 1996–1998 | 1999–2001 | 2002–2004 | 2005–2007 | |
| Number of ectopic pregnancies (EP) | 476 | 478 | 382 | 354 | 424 |
| Age at EP [M (SD)] | 30.0 (6.5) | 29.3 (6.6) | 29.6 (6.6) | 29.8 (6.7) | 29.4 (6.5) |
| Total woman-years | 273,800 | 266,959 | 230,889 | 211,488 | 196,934 |
| Total number of pregnancies | 26,725 | 24,724 | 19,662 | 17,680 | 17,326 |
| Age at pregnancy [M (SD)] | 28.8 (6.4) | 28.4 (6.4) | 28.7 (6.5) | 29.5 (6.2) | 29.7 (6.1) |
| EP rate (per 10 000 woman-years) | |||||
| Crude rate | 17.4 | 17.9 | 16.6 | 16.8 | 21.5 |
| Age-adjusted rate | 17.1 | 17.8 | 16.6 | 16.7 | 21.1 |
| EP rate (per 1000 pregnancies) | |||||
| EP rate (per 1000 pregnancies) Crude rate* |
17.8 | 19.3 | 19.4 | 20.0 | 24.5 |
| Age-adjusted rate | 19.2 | 20.3 | 19.9 | 22.4 | 26.2 |
| Percentage EP diagnosed in an inpatient setting* | 45.4 | 33.9 | 33.8 | 29.7 | 26.9 |
| Percentage EP with surgical treatment* | 48.1 | 40.2 | 39.5 | 36.2 | 30.7 |
*
p-value for trend test < 0.05
EP = ectopic pregnancy