Continuation rates of oral hormonal contraceptives in a cohort of first-time users: a population-based registry study, Sweden 2005–2010

Objective

To investigate if continuation rates in first-time users of oral hormonal contraceptives differed between different formulations and to measure if the rates were related to the prescribing categories, that is, physicians and midwives.

Design

A longitudinal national population-based registry study.

Setting

The Swedish prescribed drug register.

Participants

All women born between 1977 and 1994 defined...