Fig. 1From: Patterns of contraceptive use among young Australian women with chronic disease: findings from a prospective cohort studyDetermination of eligible sample. *Percentage of women at each survey who completed contraceptive questions but were excluded due to being not at risk of an unintended pregnancy: 2013 = 1.5%, 2015 = 2.0%, 2017 = 7.9%Back to article page