Modern contraceptive use, unmet need, and demand satisfied among women of reproductive age who are married or in a union in the focus countries of the Family Planning 2020 initiative: a systematic analysis using the Family Planning Estimation Tool.

7 For every country, the family planning estimation model models contraceptive prevalence with an expected trend that assumes contraceptive prevalence will begin with a gradual increase, the increase will subsequently become more rapid, and then it will begin to slow down when high levels of prevalence are reached.

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