The influence of oral contraceptives on the risk of multiple sclerosis.

  title={The influence of oral contraceptives on the risk of multiple sclerosis.},
  author={M. Thorogood and Philip Christopher Hannaford},
  journal={British journal of obstetrics and gynaecology},
  volume={105 12},
OBJECTIVE To examine the risk of multiple sclerosis in users of combined oral contraceptives. DESIGN Cohort study conducted between 1968 and 1996 using diagnostic data supplied by general practitioners SETTING General practices throughout the United Kingdom. POPULATION Royal College of General Practitioners' Oral Contraception Study cohort of initially 46,000 women recruited during the late 1960s. METHODS Directly standardised incidence rates of multiple sclerosis were calculated for… CONTINUE READING
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