Line Plot from Scientific Research

The risk of postpartum haemorrhage is calculated using logistic regression with a quadratic term for haemoglobin. The red is the postpartum haemorrhage risk in 4564 women with one or more risk factors (previous postpartum haemorrhage, abnormal placenta, antepartum haemorrhage, infection, multiple pregnancy, and primigravida). The blue line is the risk of postpartum haemorrhage in 5997 women without risk factors. The shaded areas are 95% CIs.

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