Population
48,865 women who delivered between 1 March 1997 and 28 February 1998 in 19 maternity units within the South…
Design
Case-control
Authors
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Alerts clinicians to substantial obstetric risk; extends case-control data on hemorrhage and hypertensive morbidity without guiding interventions.
Severe obstetric morbidity occurs in approximately 1.2% of deliveries, with two-thirds related to severe hemorrhage and one-third to hypertensive disorders, and is strongly associated with factors such as older maternal age, non-white ethnicity, and cesarean section.
Mark Waterstone (2001) studied this question.
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