ABSTRACT
Abortion rate is the number of abortions per 1000 women of reproductive age group, whereas abortion ratio is the number of abortions per 1000 live births:
Abortion rate in a year x =
abortions in year x
females of reproductive age-group in that year ∗1000
Abortion ratio in year x = abortions in year x
live births in that year ∗1000
The reproductive age group for females varies from population to population, but for comparability, this is considered to be 15-49 years. In the United States, this is calculated per 1000 women aged 15-44 years [1].
