Complex sentence: In comparison, the pill has a perfect-use failure rate of 0.3%, the I.U.D. a rate of 0.6%, and the condom a rate of 2%.
Split into simpler sentences: In comparison, the pill has a perfect-use failure rate of 0.3%, and the I.U.D. has a perfect-use failure rate of 0.6%. The condom has a perfect-use failure rate of 2%.