| Contraceptive failure in the United States J Trussell Contraception 70 (2), 89-96, 2004 | 2230 | 2004 |
| Estimates of contraceptive failure from the 2002 National Survey of Family Growth K Kost, S Singh, B Vaughan, J Trussell, A Bankole Contraception 77 (1), 10-21, 2008 | 526 | 2008 |
| Contraceptive failure in the United States: a critical review of the literature J Trussell, K Kost Studies in family planning 18 (5), 237-283, 1987 | 448 | 1987 |
| From private vice to public virtue: The birth control movement and American society since 1830 J Reed | 419 | 1978 |
| US teenage pregnancies, births and abortions, 2011: National trends by age, race and ethnicity K Kost, I Maddow-Zimet | 418* | 2016 |
| Predicting maternal behaviors during pregnancy: does intention status matter? K Kost, DJ Landry, JE Darroch Family planning perspectives, 79-88, 1998 | 366 | 1998 |
| Pregnancy intentions, maternal behaviors, and infant health: investigating relationships with new measures and propensity score analysis K Kost, L Lindberg Demography 52 (1), 83-111, 2015 | 323 | 2015 |
| Underreporting of induced and spontaneous abortion in the United States: an analysis of the 2002 National Survey of Family Growth RK Jones, K Kost Studies in family planning 38 (3), 187-197, 2007 | 322 | 2007 |
| Contraceptive failure in the United States: an update J Trussell, RA Hatcher, W Cates, FH Stewart, K Kost Studies in Family Planning 21 (1), 51-54, 1990 | 304 | 1990 |
| The public costs of births resulting from unintended pregnancies: National and state‐level estimates A Sonfield, K Kost, RB Gold, LB Finer Perspectives on sexual and reproductive health 43 (2), 94-102, 2011 | 297 | 2011 |
| Contraceptive failure in the United States: estimates from the 2006–2010 National Survey of Family Growth A Sundaram, B Vaughan, K Kost, A Bankole, L Finer, S Singh, J Trussell Perspectives on sexual and reproductive health 49 (1), 7-16, 2017 | 293 | 2017 |
| Public costs from unintended pregnancies and the role of public insurance programs in paying for pregnancy-related care A Sonfield, K Kost New York, NY, 2015 | 279 | 2015 |
| The effects of pregnancy planning status on birth outcomes and infant care K Kost, DJ Landry, JE Darroch Family planning perspectives, 223-230, 1998 | 276 | 1998 |
| Preventing pregnancy, protecting health: A new look at birth control choices in the United States S Harlap, K Kost, JD Forrest | 260 | 1991 |
| US teenage pregnancies, births and abortions: National and state trends and trends by race and ethnicity K Kost, S Henshaw, L Carlin New York: Guttmacher Institute, 2010 | 257 | 2010 |
| Unintended pregnancy rates at the state level: estimates for 2010 and trends since 2002 K Kost New York: Guttmacher Institute, 2015 | 228 | 2015 |
| Parental involvement in minors' abortion decisions SK Henshaw, K Kost Family Planning Perspectives, 196-213, 1992 | 217 | 1992 |
| Discontinuation and resumption of contraceptive use: results from the 2002 National Survey of Family Growth B Vaughan, J Trussell, K Kost, S Singh, R Jones Contraception 78 (4), 271-283, 2008 | 215 | 2008 |
| American women's sexual behavior and exposure to risk of sexually transmitted diseases K Kost, JD Forrest Family Planning Perspectives, 244-254, 1992 | 215 | 1992 |
| Abortion patients in 1994-1995: characteristics and contraceptive use SK Henshaw, K Kost Family planning perspectives, 140-158, 1996 | 198 | 1996 |
