Obstetric statistics

Question 1

What % of women with pregnancy associated VTE have an inherited thrombophilia?

Answer 1

40%

40% of women with pregnancy associated VTE have an inherited thrombophilia

Question 2

What is a relative risk?

Answer 2

Used to compare the risk in two different groups of people

Question 3

What is the relative risk of VTE in pregnant vs non pregnant women?

Answer 3

Increased to 4 to 6 fold

Risk of VTE increase to x 4 - 6 times in pregnant vs non pregnant women

Question 4

What is the absolute risk of VTE in pregnancy and the puerperium per 1,000 pregnancies

Answer 4

1-2 per 1,000 pregnancies

Question 5

What is an absolute risk?

Answer 5

Absolute risk describes the probability of an individual developing a disease or condition within a given timeframe (google)

Question 6

What is the incidence of pulmonary embolism per 10,000 maternities in the UK?

Answer 6

1.3 per 10,000 maternities

Question 7

What is the relative risk of VTE in the puerperium compared to non pregnant women?

Answer 7

up to 20 fold increase

Question 8

Regarding VTE in pregnancy what % of VTEs are pulmonary embolism?

Answer 8

10 - 20%

Question 9

Regarding VTE in pregnancy by how many fold does obesity increase your risk of deep vein thrombosis?

Answer 9

4 to 5 fold increase