Incidence of maternal mortality and severe maternal morbidity among women who gave birth in British Columbia, 2005–2010, by location of residence
| Outcome | Rural area | Urban area | OR (95% CI) | ||
|---|---|---|---|---|---|
| No. of women | Rate per 100 000 deliveries | No. of women | Rate per 100 000 deliveries | ||
| Severe maternal morbidity or death | |||||
| Death | < 5 | – | < 5 | – | 8.92 (0.56–142.86) |
| Eclampsia | 30 | 116.0 | 99 | 50.4 | 2.70 (1.80–4.07) |
| Cardiac arrest, cardiac failure or myocardial infarction | 25 | 96.7 | 302 | 127.6 | 0.74 (0.49–1.11) |
| Cardiomyopathy | 6 | 23.2 | 34 | 15.6 | 1.57 (0.66–3.75) |
| CNS morbidity | < 5 | – | 49 | 19.9 | 0.36 (0.09–1.50) |
| Obstetric shock | 11 | 42.5 | 65 | 29.7 | 1.51 (0.80–2.86) |
| Obstetric embolism | 12 | 46.4 | 51 | 24.6 | 2.10 (1.12–3.93) |
| Uterine scar dehiscence/rupture | 46 | 177.9 | 237 | 110.5 | 1.73 (1.26–2.37) |
| Renal failure | < 5 | – | 47 | 19.9 | 0.76 (0.27–2.10) |
| Septicemia | 5 | 19.3 | 48 | 20.7 | 0.93 (0.37–2.33) |
| Puerperal sepsis | 23 | 89.0 | 228 | 98.0 | 0.90 (0.59–1.38) |
| Placenta previa with hemorrhage | 71 | 274.6 | 818 | 347.0 | 0.77 (0.61–0.99) |
| Complications of anesthesia | < 5 | – | 65 | 26.5 | 0.41 (0.13–1.31) |
| Blood transfusion | 154 | 595.6 | 1158 | 512.1 | 1.19 (1.00–1.40) |
| Antepartum hemorrhage with coagulation defects | < 5 | – | 7 | 3.1 | 1.27 (0.16–10.34) |
| Postpartum hemorrhage with transfusion | 113 | 437.1 | 872 | 384.4 | 1.16 (0.95–1.41) |
| Postpartum hemorrhage with coagulation defects | < 5 | 7.7 | 19 | 8.2 | 0.94 (0.22–4.03) |
| Postpartum hemorrhage with embolization/ligation/suture of uterus | 11 | 42.5 | 166 | 69.1 | 0.59 (0.32–1.09) |
| Hysterectomy | 31 | 119.9 | 331 | 141.3 | 0.83 (0.58–1.21) |
| Assisted ventilation | 9 | 34.8 | 111 | 46.8 | 0.72 (0.37–1.42) |
| Evacuation of incisional hematoma | 7 | 27.1 | 79 | 33.6 | 0.79 (0.36–1.71) |
| Surgical repair of urethra, bladder or intestine | 13 | 50.3 | 133 | 57.0 | 0.87 (0.49–1.54) |
| Other severe morbidity* | 26 | 100.6 | 87 | 44.1 | 2.66 (1.72–4.13) |
| Placental abruption | < 5 | – | 26 | 11.7 | 1.37 (0.48–3.93) |
| Acute abdomen | < 5 | – | 17 | 7.4 | 1.05 (0.24–4.54) |
| Hepatic failure | < 5 | – | 8 | 3.9 | 2.23 (0.47–10.49) |
| Death or severe maternal morbidity | 431 | 1670.0 | 3 453 | 1500.0 | 1.11 (1.01–1.23) |
| Other maternal morbidity | Rate per 100 deliveries | Rate per 100 deliveries | |||
| Antepartum hemorrhage < 20 wk | 241 | 0.9 | 3607 | 1.6 | 0.59 (0.52–0.67) |
| Antepartum hemorrhage ≥ 20 wk | 263 | 1.0 | 3619 | 1.6 | 0.64 (0.57–0.73) |
| Preeclampsia (excluding eclampsia)† | 303 | 1.2 | 2751 | 1.2 | 0.98 (0.87–1.11) |
| Postpartum hemorrhage | 1966 | 7.6 | 18 309 | 7.9 | 0.95 (0.91–1.00) |
| Obstetric trauma | 728 | 2.8 | 8320 | 3.6 | 0.77 (0.72–0.84) |
Note: CI = confidence interval, CNS = central nervous system, OR = odds ratio.
↵* Includes adult respiratory distress syndrome and hypertensive heart disease during pregnancy.
↵† Defined as hypertension (> 140/90 on 2 readings) or hypertension in pregnancy and proteinuria, in the absence of eclampsia diagnosis.
As per the data provider requirements, cells with size < 5 and the corresponding rates are suppressed. Some conditions overlap.