Descriptors by number of appropriately timed doses.

Singleton means only one dose was administered; doublet means that two doses were appropriately timed; triplet means that three doses were appropriately timed. Bold font signifies significant differences among singleton, doublet and/or triplet doses at p<0.001. *Doses administered at visits at which counseling for smoking cessation, depression, or contraceptive use; and procedures including IUD placement occurred. †Doses administered to Other races than White, Black and Hispanic make up 4% of singleton and doublet doses and were not included in this table.