Table 3.
Operational definition of a pregnancy as derived from administrative billing data
| Billing Type | Nominal weeks of gestation | Cut-off for operational definition |
|---|---|---|
| Abortion (medical) | < 7 weeks* | 1 year + 4 weeks |
| Abortion (surgical) | < 14 weeks | 1 year + 6 weeks |
| Abortion (surgical) | 14-18 weeks | 1 year + 13 weeks |
| Abortion (surgical) | ≥ 18 weeks | 1 year + 17 weeks |
| Miscarriage | < 20 weeks | 1 year + 11 weeks |
| Still birth | ≥ 20 weeks | 1 year + 25 weeks |
| Live birth | Birth date - GA | 1 year + XX* |
*In Canada, mifepristone is not available. Medication-induced abortions using methotrexate and misoprostol are offered in British Columbia up to a maximum of 49 days (7 weeks) from last menstrual period.
** Where XX = median conceptual age for live births in BC