Cynthia Harper, PhD
Professor
Ob/Gyn, Reproductive Sciences
School of Medicine

Dr. Harper conducts research on contraception with the aim of improving access to care and women's health outcomes through clinical practice and health policy changes.

With a team at UCSF Bixby, she conducted a series of studies over many years and policy contexts that helped to transform emergency contraception from a little known regimen of cut up packets of pills to a product widely available over the counter to everyone, including teens and undocumented populations. The research informed judicial and FDA decisions to ultimately move emergency contraception over-the-counter in the U.S. It also had a wide impact on policy and regulatory decisions in other countries where women can now access emergency contraception.

Dr. Harper and her research team developed a provider contraceptive training curriculum that successfully reduced unintended pregnancy by nearly half among women in family planning clinics. The clinic intervention, tested in a large, national randomized trial, was a the first one to effectively decrease unintended pregnancy. The intervention also was demonstrated to respect women's autonomy in contraceptive-decision-making. Based on this effective intervention, Dr. Harper and her national training team, led by Dr. Suzan Goodman, have built a contraceptive training program, Beyond the Pill (beyondthepill.ucsf.edu), that offers a UCSF-Continuing Education-accredited course to physicians, nurses and health educators. They are bringing their intervention to scale reaching practices across the country, including large urban hospital systems, departments of health, FQHCs, family planning clinics, teen clinics, school-based health centers, and community colleges. The Beyond the Pill program has trained over 6,000 providers, reaching more than 2,000,000 contraceptive patients annually. In response to the Zika public health emergency, they partnered with the CDC Foundation and local stakeholders to train obstetrician-gynecologists in Puerto Rico. During this implementation science phase, the intervention has continued to have a significant impact on clinical practice changes and patient outcomes.

• Use of preferred contraceptive method among young adults in Texas and California: A comparison by state and insurance coverage.
  PloS one 2023 Hopkins K, Yarger J, Rossetto I, Sanchez A, Brown E, Elmes S, Mantaro T, White K, Harper CC
• Contraceptive preferences and adoption following female genital fistula surgery in Uganda: a mixed-methods study.
  Reproductive health 2023 El Ayadi AM, Nalubwama H, Painter C, Kakaire O, Miller S, Barageine J, Byamugisha J, Obore S, Korn A, Harper CC
• "She should support me, she's my doctor:" Patient perceptions of agency in contraceptive decision-making in the clinical encounter in Northern California.
  Perspectives on sexual and reproductive health 2023 Rao L, Rocca CH, Muñoz I, Chambers BD, Devaskar S, Asiodu IV, Stern L, Blum M, Comfort AB, Harper CC
• Educational Intervention Among Adolescents and Young Adults on Emergency Contraception Options.
  The Journal of adolescent health : official publication of the Society for Adolescent Medicine 2023 Harper CC, Jones E, Brindis CD, Watson A, Schroeder R, Boyer CB, Edelman A, Trieu S, Yarger J
• Effectiveness and efficacy rates of progestin-only pills: A comprehensive literature review.
  Contraception 2022 Zuniga C, Blanchard K, Harper CC, Wollum A, Key K, Henderson JT
• The role of informational support from women's social networks on antenatal care initiation: qualitative evidence from pregnant women in Uganda.
  BMC pregnancy and childbirth 2022 Comfort AB, El Ayadi AM, Camlin CS, Tsai AC, Nalubwama H, Byamugisha J, Walker DM, Moody J, Roberts T, Senoga U, Krezanoski PJ, Harper CC
• Agency in Contraceptive Decision-Making in Patient Care: a Psychometric Measure.
  Journal of general internal medicine 2022 Harper CC, Rao L, Muñoz I, Stern L, Kerns JL, Parra M, Chambers BD, Rocca CH
• Perceived Access to Contraception via Telemedicine Among Young Adults: Inequities by Food and Housing Insecurity.
  Journal of general internal medicine 2022 Yarger J, Hopkins K, Elmes S, Rossetto I, De La Melena S, McCulloch CE, White K, Harper CC
• Virtual Intrauterine Device Placement Training Improves Clinician Comfort.
  Family medicine 2022 Sebastian RA, Robinson J, Rayburn E, White A, Andersen AM, Cantu I, Harper CC, Goodman S, Kong AS, Jimenez EY
• Telehealth for Contraceptive Services During the COVID-19 Pandemic: Provider Perspectives.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2022 Rao L, Comfort AB, Dojiri SS, Goodman S, Yarger J, Shah N, Folse C, Blum M, Hankin J, Harper CC
• Assessing differences in contraceptive provision through telemedicine among reproductive health providers during the COVID-19 pandemic in the United States.
  Reproductive health 2022 Comfort AB, Rao L, Goodman S, Raine-Bennett T, Barney A, Mengesha B, Harper CC
• An Educational Intervention to Raise Awareness of Contraceptive Options Among Young People.
  Journal of women's health (2002) 2021 Yarger J, Schroeder R, Cabral MA, Lamme JS, McCulloch CE, Trieu SL, de Jounge A, Harper CC
• Concerns About the Cost of Contraception Among Young Women Attending Community College.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2021 Yarger J, Schroeder R, Blum M, Cabral MA, Brindis CD, Perelli B, Harper CC
• Social and provider networks and women's contraceptive use: Evidence from Madagascar.
  Contraception 2021 Comfort AB, Harper CC, Tsai AC, Moody J, Perkins JM, Rasolofomana JR, Alperin C, Ranjalahy AN, Heriniaina R, Krezanoski PJ
• Mental health among outpatient reproductive health care providers during the US COVID-19 epidemic.
  Reproductive health 2021 Comfort AB, Krezanoski PJ, Rao L, El Ayadi A, Tsai AC, Goodman S, Harper CC
• The association between men's family planning networks and contraceptive use among their female partners: an egocentric network study in Madagascar.
  BMC public health 2021 Comfort AB, Harper CC, Tsai AC, Perkins JM, Moody J, Rasolofomana JR, Alperin C, Schultz M, Ranjalahy AN, Heriniaina R, Krezanoski PJ
• Intrauterine Devices and Sexually Transmitted Infection among Older Adolescents and Young Adults in a Cluster Randomized Trial.
  Journal of pediatric and adolescent gynecology 2020 El Ayadi AM, Rocca CH, Averbach SH, Goodman S, Darney PD, Patel A, Harper CC
• The Fine Line Between Informing and Coercing: Community Health Center Clinicians' Approaches to Counseling Young People About IUDs.
  Perspectives on sexual and reproductive health 2020 Biggs MA, Tome L, Mays A, Kaller S, Harper CC, Freedman L
• Delayed Visits for Contraception Due to Concerns Regarding Pelvic Examination Among Women with History of Intimate Partner Violence.
  Journal of general internal medicine 2020 Holt HK, Sawaya GF, El Ayadi AM, Henderson JT, Rocca CH, Westhoff CL, Harper CC
• Implementation science: Scaling a training intervention to include IUDs and implants in contraceptive services in primary care.
  Preventive medicine 2020 Harper CC, Comfort AB, Blum M, Rocca CH, McCulloch CE, Rao L, Shah N, Oquendo Del Toro H, Goodman S
• Improving Capacity at School-based Health Centers to Offer Adolescents Counseling and Access to Comprehensive Contraceptive Services.
  Journal of pediatric and adolescent gynecology 2020 Comfort AB, Rao L, Goodman S, Barney A, Glymph A, Schroeder R, McCulloch C, Harper CC
• Perceived Conflicting Desires to Delay the First Birth: A Household-Level Exploration in Nepal.
  International perspectives on sexual and reproductive health 2020 Diamond-Smith N, Plaza N, Puri M, Dahal M, Weiser SD, Harper CC
• Influence of Contraception Class on Incidence and Severity of Acne Vulgaris.
  Obstetrics and gynecology 2020 Barbieri JS, Mitra N, Margolis DJ, Harper CC, Mostaghimi A, Abuabara K
• Exploring young women's reasons for adopting intrauterine or oral emergency contraception in the United States: a qualitative study.
  BMC women's health 2020 Kaller S, Mays A, Freedman L, Harper CC, Biggs MA
• Intimate Partner Violence and Effectiveness Level of Contraceptive Selection Post-Abortion.
  Journal of women's health (2002) 2019 Drew LB, Mittal M, Thoma ME, Harper CC, Steinberg JR
• Do home pregnancy tests bring women to community health workers for antenatal care counselling? A randomized controlled trial in Madagascar.
  Health policy and planning 2019 Comfort AB, Juras RC, Bradley SEK, Ranjalahy Rasolofomanana J, Noeliarivelo Ranjalahy A, Harper CC
• Educating men about vaginal microbicides: considerations from Kenya.
  Culture, health & sexuality 2019 Gitome SW, Kwena ZA, Harper CC, Cohen CR, Bukusi EA
• Corrigendum to 'Current and past depressive symptoms and contraceptive effectiveness level method selected among women seeking reproductive health services' Social Science and Medicine 2018214: 20-25.
  Social science & medicine (1982) 2018 Steinberg JR, Adler NE, Thompson KM, Westhoff C, Harper CC
• Pregnancy Intentions, Contraceptive Knowledge And Educational Aspirations Among Community College Students.
  Perspectives on sexual and reproductive health 2018 Cabral MA, Schroeder R, Armstrong EM, El Ayadi AM, Gürel AL, Chang J, Harper CC
• Current and past depressive symptoms and contraceptive effectiveness level method selected among women seeking reproductive health services.
  Social science & medicine (1982) 2018 Steinberg JR, Adler NE, Thompson KM, Westhoff C, Harper CC
• Pharmacy access to medical abortion from trained providers and post-abortion contraception in Nepal.
  International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 2018 Puri MC, Harper CC, Maharjan D, Blum M, Rocca CH
• The intrauterine device as emergency contraception: how much do young women know?
  Contraception 2018 Goodman SR, El Ayadi AM, Rocca CH, Kohn JE, Benedict CE, Dieseldorff JR, Harper CC
• Training contraceptive providers to offer intrauterine devices and implants in contraceptive care: a cluster randomized trial.
  American journal of obstetrics and gynecology 2018 Thompson KMJ, Rocca CH, Stern L, Morfesis J, Goodman S, Steinauer J, Harper CC
• Effectiveness and safety of early medication abortion provided in pharmacies by auxiliary nurse-midwives: A non-inferiority study in Nepal.
  PloS one 2018 Rocca CH, Puri M, Shrestha P, Blum M, Maharjan D, Grossman D, Regmi K, Darney PD, Harper CC
• "Birth Control can Easily Take a Back Seat": Challenges Providing IUDs in Community Health Care Settings.
  Journal of health care for the poor and underserved 2018 Biggs MA, Kaller S, Harper CC, Freedman L, Mays AR
• Contraception after medication abortion in the United States: results from a cluster randomized trial.
  American journal of obstetrics and gynecology 2017 Rocca CH, Goodman S, Grossman D, Cadwallader K, Thompson KMJ, Talmont E, Speidel JJ, Harper CC
• Barriers to postpartum contraception: differences among women based on parity and future fertility desires.
  Culture, health & sexuality 2017 Keesara S, Juma PA, Harper CC, Newmann SJ
• The impact of an IUD and implant intervention on dual method use among young women: Results from a cluster randomized trial.
  Preventive medicine 2016 El Ayadi AM, Rocca CH, Kohn JE, Velazquez D, Blum M, Newmann SJ, Harper CC
• Long-Acting Reversible Contraception Counseling and Use for Older Adolescents and Nulliparous Women.
  The Journal of adolescent health : official publication of the Society for Adolescent Medicine 2016 Gibbs SE, Rocca CH, Bednarek P, Thompson KMJ, Darney PD, Harper CC
• Obstetrician-Gynecologist Practices and Beliefs Regarding External Genitalia Inspection and Speculum Examinations in Healthy Older Asymptomatic Women.
  Journal of the American Geriatrics Society 2016 Hsu A, Henderson JT, Harper CC, Sawaya GF
• Public Funding for Contraception, Provider Training, and Use of Highly Effective Contraceptives: A Cluster Randomized Trial.
  American journal of public health 2016 Thompson KM, Rocca CH, Kohn JE, Goodman S, Stern L, Blum M, Speidel JJ, Darney PD, Harper CC
• Funding policies and postabortion long-acting reversible contraception: results from a cluster randomized trial.
  American journal of obstetrics and gynecology 2015 Rocca CH, Thompson KM, Goodman S, Westhoff CL, Harper CC
• Psychosocial factors and pre-abortion psychological health: The significance of stigma.
  Social science & medicine (1982) 2015 Steinberg JR, Tschann JM, Furgerson D, Harper CC
• Provider Opinions Regarding Expanding Access to Hormonal Contraception in Pharmacies.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2015 Rafie S, Kelly S, Gray EK, Wong M, Gibbs S, Harper CC
• Measurements of Elliptic and Triangular Flow in High-Multiplicity 3He+Au Collisions at √(s(NN))=200 GeV.
  Physical review letters 2015 Adare A, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Akimoto R, Al-Bataineh H, Alexander J, Alfred M, Al-Ta'ani H, Andrews KR, Angerami A, Aoki K, Apadula N, Aphecetche L, Appelt E, Aramaki Y, …
• Why do women choose private over public facilities for family planning services? A qualitative study of post-partum women in an informal urban settlement in Kenya.
  BMC health services research 2015 Keesara SR, Juma PA, Harper CC
• California Family Planning Health Care Providers' Challenges to Same-Day Long-Acting Reversible Contraception Provision.
  Obstetrics and gynecology 2015 Biggs MA, Harper CC, Brindis CD
• Obstetrician-gynecologists' beliefs about performing less cervical cancer screening: the pendulum swings.
  American journal of obstetrics and gynecology 2015 Schneider A, Henderson JT, Harper CC, Hsu A, Saraiya M, Sawaya GF
• Choice of the levonorgestrel intrauterine device, etonogestrel implant or depot medroxyprogesterone acetate for contraception after aspiration abortion.
  Contraception 2015 Steinauer JE, Upadhyay UD, Sokoloff A, Harper CC, Diedrich JT, Drey EA
• Reductions in pregnancy rates in the USA with long-acting reversible contraception: a cluster randomised trial.
  Lancet (London, England) 2015 Harper CC, Rocca CH, Thompson KM, Morfesis J, Goodman S, Darney PD, Westhoff CL, Speidel JJ
• Contraceptive discontinuation and pregnancy postabortion in Nepal: a longitudinal cohort study.
  Contraception 2014 Puri M, Henderson JT, Harper CC, Blum M, Joshi D, Rocca CH
• Obstetrician-gynecologists' beliefs on the importance of pelvic examinations in assessing hormonal contraception eligibility.
  Contraception 2014 Yu JM, Henderson JT, Harper CC, Sawaya GF
• Clinicians' perceptions and provision of hormonal contraceptives for HIV-positive and at-risk women in Southern Africa: an original research article.
  Contraception 2014 Blanchard K, Chipato T, Ramjee G, Nhemachena T, Harper CC, Provider Study Writing Comittee
• Postabortion contraception a decade after legalization of abortion in Nepal.
  International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 2014 Rocca CH, Puri M, Harper CC, Blum M, Dulal B, Henderson JT
• Exploring young adults' contraceptive knowledge and attitudes: disparities by race/ethnicity and age.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2014 Craig AD, Dehlendorf C, Borrero S, Harper CC, Rocca CH
• Factors influencing the provision of long-acting reversible contraception in California.
  Obstetrics and gynecology 2014 Biggs MA, Harper CC, Malvin J, Brindis CD
• U.S. clinicians' perspectives on less frequent routine gynecologic examinations.
  Preventive medicine 2014 Henderson JT, Yu JM, Harper CC, Sawaya GF
• Counseling for IUDs and implants: are health educators and clinicians on the same page?
  Perspectives on sexual and reproductive health 2013 Thompson KM, Stern L, Gelt M, Speidel JJ, Harper CC
• Counseling and provision of long-acting reversible contraception in the US: national survey of nurse practitioners.
  Preventive medicine 2013 Harper CC, Stratton L, Raine TR, Thompson K, Henderson JT, Blum M, Postlethwaite D, Speidel JJ
• Psychological distress and post-abortion contraceptive method effectiveness level chosen at an urban clinic.
  Contraception 2013 Steinberg JR, Tschann JM, Henderson JT, Drey EA, Steinauer JE, Harper CC
• The authors reply.
  Perspectives on sexual and reproductive health 2013 Rocca CH, Harper CC, Raine-Bennett TR
• Effects of abortion legalization in Nepal, 2001-2010.
  PloS one 2013 Henderson JT, Puri M, Blum M, Harper CC, Rana A, Gurung G, Pradhan N, Regmi K, Malla K, Sharma S, Grossman D, Bajracharya L, Satyal I, Acharya S, Lamichhane P, Darney PD
• Provision of long-acting reversible contraception in HIV-prevalent countries: results from nationally representative surveys in southern Africa.
  BJOG : an international journal of obstetrics and gynaecology 2013 Morse J, Chipato T, Blanchard K, Nhemachena T, Ramjee G, McCulloch C, Blum M, Saleeby E, Harper CC
• Pregnancy: not a disease but still a health risk.
  Contraception 2013 Speidel JJ, Rocca CH, Thompson KM, Harper CC
• Unsafe abortion after legalisation in Nepal: a cross-sectional study of women presenting to hospitals.
  BJOG : an international journal of obstetrics and gynaecology 2013 Rocca CH, Puri M, Dulal B, Bajracharya L, Harper CC, Blum M, Henderson JT
• A nationally representative survey of healthcare provider counselling and provision of the female condom in South Africa and Zimbabwe.
  BMJ open 2013 Holt K, Blanchard K, Chipato T, Nhemachena T, Blum M, Stratton L, Morar N, Ramjee G, Harper CC
• Access to levonorgestrel emergency contraception: science versus federal politics.
  Women's health (London, England) 2013 Thompson KM, Raine TR, Foster DG, Speidel JJ, Darney PD, Brindis CD, Harper CC
• Women's reports on postabortion family-planning services provided by the public-sector legal abortion program in Mexico City.
  International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 2013 Becker D, Díaz Olavarrieta C, Garcia SG, Harper CC
• Young women's perceptions of the benefits of childbearing: associations with contraceptive use and pregnancy.
  Perspectives on sexual and reproductive health 2013 Rocca CH, Harper CC, Raine-Bennett TR
• Routine bimanual pelvic examinations: practices and beliefs of US obstetrician-gynecologists.
  American journal of obstetrics and gynecology 2012 Henderson JT, Harper CC, Gutin S, Saraiya M, Chapman J, Sawaya GF
• Changes to cervical cancer prevention guidelines: effects on screening among U.S. women ages 15-29.
  Preventive medicine 2012 Henderson JT, Saraiya M, Martinez G, Harper CC, Sawaya GF
• Evidence-based IUD practice: family physicians and obstetrician-gynecologists.
  Family medicine 2012 Harper CC, Henderson JT, Raine TR, Goodman S, Darney PD, Thompson KM, Dehlendorf C, Speidel JJ
• Willingness of clinicians to integrate microbicides into HIV prevention practices in southern Africa.
  AIDS and behavior 2012 Harper CC, Holt K, Nhemachena T, Chipato T, Ramjee G, Stratton L, Blum M, McCulloch CE, Mgweba S, Blanchard K
• Male circumcision for HIV prevention: clinical practices and attitudes among healthcare providers in South Africa and Zimbabwe.
  Sexually transmitted diseases 2012 Sheldon WR, Nhemachena T, Blanchard K, Chipato T, Ramjee G, Trussell J, McCulloch CE, Blum M, Harper CC
• Do racial and ethnic differences in contraceptive attitudes and knowledge explain disparities in method use?
  Perspectives on sexual and reproductive health 2012 Rocca CH, Harper CC
• Direct pharmacy access to hormonal contraception: California physician and advanced practice clinician views.
  Contraception 2012 Rafie S, Haycock M, Rafie S, Yen S, Harper CC
• Postabortion contraception: qualitative interviews on counseling and provision of long-acting reversible contraceptive methods.
  Perspectives on sexual and reproductive health 2012 Morse J, Freedman L, Speidel JJ, Thompson KM, Stratton L, Harper CC
• "Sometimes they used to whisper in our ears": health care workers' perceptions of the effects of abortion legalization in Nepal.
  BMC public health 2012 Puri M, Lamichhane P, Harken T, Blum M, Harper CC, Darney PD, Henderson JT
• An over-the-counter simulation study of a single-tablet emergency contraceptive in young females.
  Obstetrics and gynecology 2012 Raine TR, Ricciotti N, Sokoloff A, Brown BA, Hummel A, Harper CC
• Copper intrauterine device for emergency contraception: clinical practice among contraceptive providers.
  Obstetrics and gynecology 2012 Harper CC, Speidel JJ, Drey EA, Trussell J, Blum M, Darney PD
• Clients' perceptions of the quality of care in Mexico city's public-sector legal abortion program.
  International perspectives on sexual and reproductive health 2011 Becker D, Díaz-Olavarrieta C, Juárez C, García SG, Sanhueza P, Harper CC
• The copper IUD for emergency contraception, a neglected option.
  Contraception 2011 Belden P, Harper CC, Speidel JJ
• Increased use of intrauterine contraception in California, 1997 to 2007.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2011 Thompson KM, Foster DG, Harper CC
• Sex-selective abortion in Nepal: a qualitative study of health workers' perspectives.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2011 Lamichhane P, Harken T, Puri M, Darney PD, Blum M, Harper CC, Henderson JT
• Sociodemographic factors associated with obstacles to abortion care: findings from a survey of abortion patients in Mexico City.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2011 Becker D, Diaz-Olavarrieta C, Juarez C, Garcia SG, Sanhueza Smith P, Harper CC
• One-year contraceptive continuation and pregnancy in adolescent girls and women initiating hormonal contraceptives.
  Obstetrics and gynecology 2011 Raine TR, Foster-Rosales A, Upadhyay UD, Boyer CB, Brown BA, Sokoloff A, Harper CC
• Pelvic examinations and access to oral hormonal contraception.
  Obstetrics and gynecology 2010 Henderson JT, Sawaya GF, Blum M, Stratton L, Harper CC
• Contraceptive policies affect post-abortion provision of long-acting reversible contraception.
  Contraception 2010 Thompson KM, Speidel JJ, Saporta V, Waxman NJ, Harper CC
• Hormonal contraceptive method choice among young, low-income women: how important is the provider?
  Patient education and counseling 2010 Harper CC, Brown BA, Foster-Rosales A, Raine TR
• "I wouldn't be this firm if I didn't care": preventive clinical counseling for reproductive health.
  Patient education and counseling 2010 Henderson JT, Raine T, Schalet A, Blum M, Harper CC
• Abstinence and teenagers: prevention counseling practices of health care providers serving high-risk patients in the United States.
  Perspectives on sexual and reproductive health 2010 Harper CC, Henderson JT, Schalet A, Becker D, Stratton L, Raine TR
• Contraceptive decision-making in sexual relationships: young men's experiences, attitudes and values.
  Culture, health & sexuality 2010 Raine TR, Gard JC, Boyer CB, Haider S, Brown BA, Ramirez Hernandez FA, Harper CC
• Preventing excessive weight gain in pregnancy: how do prenatal care providers approach counseling?
  Journal of women's health (2002) 2010 Stotland NE, Gilbert P, Bogetz A, Harper CC, Abrams B, Gerbert B
• Attitudes toward the vaginal ring and transdermal patch among adolescents and young women.
  The Journal of adolescent health : official publication of the Society for Adolescent Medicine 2009 Raine TR, Epstein LB, Harper CC, Brown BA, Boyer CB
• The potential of long-acting reversible contraception to decrease unintended pregnancy.
  Contraception 2008 Speidel JJ, Harper CC, Shields WC
• Challenges in translating evidence to practice: the provision of intrauterine contraception.
  Obstetrics and gynecology 2008 Harper CC, Blum M, de Bocanegra HT, Darney PD, Speidel JJ, Policar M, Drey EA
• Consistent condom use in married Zimbabwean women after a condom intervention.
  Sexually transmitted diseases 2008 Callegari L, Harper CC, van der Straten A, Kamba M, Chipato T, Padian NS
• Over-the-counter access to emergency contraception for teens.
  Contraception 2008 Harper CC, Weiss DC, Speidel JJ, Raine-Bennett T
• Adolescent and young women's experience with the vaginal ring and oral contraceptive pills.
  Journal of pediatric and adolescent gynecology 2007 Stewart FH, Brown BA, Raine TR, Weitz TA, Harper CC
• Advance provision of emergency contraception for pregnancy prevention: a meta-analysis.
  Obstetrics and gynecology 2007 Polis CB, Schaffer K, Blanchard K, Glasier A, Harper CC, Grimes DA
• Pharmacy access to emergency contraception: Perspectives of pharmacists at a chain pharmacy in San Francisco.
  Journal of the American Pharmacists Association : JAPhA 2007 El-Ibiary SY, Raine T, McIntosh J, Darney PD, Harper CC
• Predictors of incident herpes simplex virus type 2 infections in young women at risk for unintended pregnancy in San Francisco.
  BMC infectious diseases 2007 Moss NJ, Harper CC, Ahrens K, Scott K, Kao S, Padian N, Raine T, Klausner JD
• Reducing maternal mortality due to elective abortion: Potential impact of misoprostol in low-resource settings.
  International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 2007 Harper CC, Blanchard K, Grossman D, Henderson JT, Darney PD
• Advance provision of emergency contraception for pregnancy prevention (full review).
  The Cochrane database of systematic reviews 2007 Polis CB, Schaffer K, Blanchard K, Glasier A, Harper CC, Grimes DA
• Beyond access: acceptability, use and nonuse of emergency contraception among young women.
  American journal of obstetrics and gynecology 2007 Rocca CH, Schwarz EB, Stewart FH, Darney PD, Raine TR, Harper CC
• Trends in knowledge of emergency contraception among women in California, 1999-2004.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2007 Foster DG, Ralph LJ, Arons A, Brindis CD, Harper CC
• Pharmacokinetics of single-dose levonorgestrel in adolescents.
  Contraception 2006 Sambol NC, Harper CC, Kim L, Liu CY, Darney P, Raine TR
• Safety of mifepristone abortions in clinical use.
  Contraception 2005 Henderson JT, Hwang AC, Harper CC, Stewart FH
• The effect of increased access to emergency contraception among young adolescents.
  Obstetrics and gynecology 2005 Harper CC, Cheong M, Rocca CH, Darney PD, Raine TR
• Direct access to emergency contraception through pharmacies and effect on unintended pregnancy and STIs: a randomized controlled trial.
  JAMA 2005 Raine TR, Harper CC, Rocca CH, Fischer R, Padian N, Klausner JD, Darney PD
• Abortion in the United States.
  Annual review of public health 2005 Harper CC, Henderson JT, Darney PD
• Tolerability of levonorgestrel emergency contraception in adolescents.
  American journal of obstetrics and gynecology 2004 Harper CC, Rocca CH, Darney PD, von Hertzen H, Raine TR
• Knowledge of emergency contraception among women aged 18 to 44 in California.
  American journal of obstetrics and gynecology 2004 Foster DG, Harper CC, Bley JJ, Mikanda JJ, Induni M, Saviano EC, Stewart FH
• Adolescent clinic visits for contraception: support from mothers, male partners and friends.
  Perspectives on sexual and reproductive health 2004 Harper C, Callegari L, Raine T, Blum M, Darney P
• Sexual partners and use of emergency contraception.
  American journal of obstetrics and gynecology 2003 Harper CC, Minnis AM, Padian NS
• The other half of the equation: Serving young men in a young women's reproductive health clinic.
  Perspectives on sexual and reproductive health 2003 Raine T, Marcell AV, Rocca CH, Harper CC
• Could American women use mifepristone-misoprostol pills safely with less medical supervision?
  Contraception 2002 Harper C, Ellertson C, Winikoff B
• Race, adolescent contraceptive choice, and pregnancy at presentation to a family planning clinic.
  Obstetrics and gynecology 2002 Raine T, Harper C, Paukku M, Darney P
• Clinical breast and pelvic examination requirements for hormonal contraception: Current practice vs evidence.
  JAMA 2001 Stewart FH, Harper CC, Ellertson CE, Grimes DA, Sawaya GF, Trussell J
• Cervical neoplasia risk in women provided hormonal contraception without a Pap smear.
  Contraception 2001 Sawaya GF, Harper C, Balistreri E, Boggess J, Darney P
• Provision of hormonal contraceptives without a mandatory pelvic examination: the first stop demonstration project.
  Family planning perspectives 2001 Harper C, Balistreri E, Boggess J, Leon K, Darney P
• Emergency contraception: advance provision in a young, high-risk clinic population.
  Obstetrics and gynecology 2000 Raine T, Harper C, Leon K, Darney P
• Emergency contraception in Mexico City: what do health care providers and potential users know and think about it?
  Contraception 1999 Langer A, Harper C, Garcia-Barrios C, Schiavon R, Heimburger A, Elul B, Renoso Delgado S, Ellertson C
• Blood loss with mifepristone--misoprostol abortion: measures from a trial in China, Cuba and India.
  International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 1998 Harper C, Winikoff B, Ellertson C, Coyaji K
• The emergency contraceptive pill: a survey of knowledge and attitudes among students at Princeton University.
  American journal of obstetrics and gynecology 1995 Harper CC, Ellertson CE
• Knowledge and perceptions of emergency contraceptive pills among a college-age population: a qualitative approach.
  Family planning perspectives 1995 Harper C, Ellertson C
• The prevalence of the Wernicke-Korsakoff syndrome in Sydney, Australia: a prospective necropsy study.
  Journal of neurology, neurosurgery, and psychiatry 1989 Harper C, Gold J, Rodriguez M, Perdices M
• The Wernicke-Korsakoff syndrome in Sydney--a prospective necropsy study.
  The Medical journal of Australia 1988 Harper C, Rodriguez M, Gold J, Perdices M