passages.id: 1485
passages.type: sentence
passages.text: Cardiovascular reactivity to psychological stress may be one mechanism for the enhanced risk , but the small number of studies examining whether OC users who smoke have greater reactivity have produced mixed results .
entities.id: 1486
entities.type: intervention
entities.text: OC
entities.id: 1487
entities.type: outcome
entities.text: Cardiovascular reactivity