When comparing, you may want to consider how effective one form will be over extended periods of time.
James Trussellwhose data was used for thesenotes that the Times' projections are overestimates.
So the figures aren’t perfect, but the general idea they present is still useful information.
you’re free to read you should consider this information at io9.
How Likely Is It That Birth Control Could Let You Down?| The New York Times
