Admission for and mortality from primary venous thromboembolism in women of fertile age in Denmark, 1977-95.

@article{Mellemkjaer1999AdmissionFA,
  title={Admission for and mortality from primary venous thromboembolism in women of fertile age in Denmark, 1977-95.},
  author={Lene Mellemkjaer and Henrik Toft S\orensen and Lene Dreyer and J{\"o}rgen H Olsen},
  journal={BMJ},
  year={1999},
  volume={319 7213},
  pages={820-1}
}
Epidemiological studies indicate that use of third generation oral contraceptives increases the risk of venous thromboembolism more than does use of second generation oral contraceptives. Critics have suggested that this finding may be confounded by indication, since third generation pills were considered to be safer and were therefore perhaps prescribed more often to women at high risk. If confounding by indication is the only explanation for the observed association, the incidence of venous… CONTINUE READING

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