All Stories

  1. Contraceptive effectiveness: a synthesis of the literature

    Article • Contraception, October 2025, Elsevier

    Dr Chelsea B Polis

  2. A comparison of acceptability of contraceptive vaginal rings, pills, and injectables among cisgender women in Kenya and Zimbabwe: protocol for a mixed-methods study

    Article • June 2025, Faculty of 1000, Ltd.

    Dr Chelsea B Polis

  3. A comparison of acceptability of contraceptive vaginal rings, pills, and injectables among cisgender women in Kenya and Zimbabwe: protocol for a mixed-methods study

    Article • Gates Open Research, March 2025, Faculty of 1000, Ltd.

    Dr Chelsea B Polis

  4. A comparison of acceptability of contraceptive vaginal rings, pills, and injectables among cisgender women in Kenya and Zimbabwe: protocol for a mixed-methods study

    Article • December 2024, Faculty of 1000, Ltd.

    Dr Chelsea B Polis

  5. Knowledge of abortion legality among health facility staff in Ghana

    Article • PLOS One, August 2024, PLOS

    Dr Chelsea B Polis

  6. Correcting the scientific record on abortion and mental health outcomes

    Article • February 2024, Center for Open Science

    Dr Chelsea B Polis, Julia Littell

  7. Impacts of COVID-19 on contraceptive and abortion services in low- and middle-income countries: a scoping review

    Article • Sexual and Reproductive Health Matters, August 2022, Taylor & Francis

    Dr. Boniface Ayanbekongshie Ushie, Dr Chelsea B Polis

  8. Hormonal contraceptive use in Ghana: The role of method attributes and side effects in method choice and continuation

    Article • Contraception, September 2021, Elsevier

    Dr Chelsea B Polis, Dr Sarah C Keogh

  9. Prevalence and Correlates of Perceived Infertility in Ghana

    Article • Studies in Family Planning, September 2020, Wiley

    Easmon Otupiri, Dr Chelsea B Polis, Dr Sarah C Keogh

  10. Estimating the incidence of abortion: a comparison of five approaches in Ghana

    Article • BMJ Global Health, April 2020, BMJ

    Dr Chelsea B Polis, Dr Sarah C Keogh

  11. Estimating the incidence of abortion: using the Abortion Incidence Complications Methodology in Ghana, 2017

    Article • BMJ Global Health, April 2020, BMJ

    Dr Chelsea B Polis, Dr Sarah C Keogh

  12. Perceived Infertility Among Young Adults in Balaka, Malawi

    Article • International Family Planning Perspectives, January 2020, Guttmacher Institute

    Dr Chelsea B Polis

  13. Fertility awareness based methods for pregnancy prevention

    Article • BMJ, July 2019, BMJ

    Dr Chelsea B Polis

  14. Pharmacokinetic, biologic and epidemiologic differences in MPA- and NET-based progestin-only injectable contraceptives relative to the potential impact on HIV acquisition in women

    Article • Contraception, April 2019, Elsevier

    Dr Chelsea B Polis

  15. Global Contraceptive Failure Rates: Who Is Most at Risk?

    Article • Studies in Family Planning, February 2019, Wiley

    Dr Chelsea B Polis

  16. Effectiveness of Fertility Awareness–Based Methods for Pregnancy Prevention

    Article • Obstetrics and Gynecology, September 2018, Wolters Kluwer Health

    Dr Chelsea B Polis

  17. Multiple contraceptive method use and prevalence of fertility awareness based method use in the United States, 2013–2015

    Article • Contraception, September 2018, Elsevier

    Dr Chelsea B Polis

  18. There might be blood: a scoping review on women’s responses to contraceptive-induced menstrual bleeding changes

    Article • Reproductive Health, June 2018, Springer Science + Business Media

    Dr Chelsea B Polis

  19. Published analysis of contraceptive effectiveness of Daysy and DaysyView app is fatally flawed

    Article • Reproductive Health, June 2018, Springer Science + Business Media

    Dr Chelsea B Polis

  20. Is a lower-dose, subcutaneous contraceptive injectable containing depot medroxyprogesterone acetate likely to impact women's risk of HIV?

    Article • Contraception, March 2018, Elsevier

    Dr Chelsea B Polis

  21. Severity and management of postabortion complications among women in Zimbabwe, 2016: a cross-sectional study

    Article • BMJ Open, February 2018, BMJ

    Dr Chelsea B Polis

  22. Modeling the impact of novel male contraceptive methods on reductions in unintended pregnancies in Nigeria, South Africa, and the United States

    Article • Contraception, January 2018, Elsevier

    Dr Chelsea B Polis

  23. Hormonal contraceptive methods and HIV: research gaps and programmatic priorities

    Article • Contraception, August 2017, Elsevier

    Dr Chelsea B Polis

  24. Incidence of induced abortion in Malawi, 2015

    Article • PLOS One, April 2017, PLOS

    Dr Chelsea B Polis

  25. Estimating infertility prevalence in low-to-middle-income countries: an application of a current duration approach to Demographic and Health Survey data

    Article • Human Reproduction, February 2017, Oxford University Press (OUP)

    Dr Chelsea B Polis

  26. An updated systematic review of epidemiological evidence on hormonal contraceptive methods and HIV acquisition in women

    Article • AIDS, November 2016, Wolters Kluwer Health

    Dr Chelsea B Polis

  27. Levonorgestrel in contraceptives and multipurpose prevention technologies

    Article • AIDS, November 2016, Wolters Kluwer Health

    Dr Chelsea B Polis

  28. Typical-use contraceptive failure rates in 43 countries with Demographic and Health Survey data: summary of a detailed report

    Article • Contraception, March 2016, Elsevier

    Dr Chelsea B Polis

  29. Multipurpose prevention technologies for sexual and reproductive health: mapping global needs for introduction of new preventive products

    Article • Contraception, January 2016, Elsevier

    Dr Chelsea B Polis

  30. The safety of hormonal contraceptives for women living with HIV and their sexual partners

    Article • Contraception, January 2016, Elsevier

    Dr Chelsea B Polis

  31. Contraceptive Methods and Risk of HIV Acquisition or Female-to-Male Transmission

    Article • Current HIV/AIDS Reports, October 2014, Springer Science + Business Media

    Dr Chelsea B Polis

  32. Hormonal contraceptive methods and risk of HIV acquisition in women: a systematic review of epidemiological evidence

    Article • Contraception, October 2014, Elsevier

    Dr Chelsea B Polis

  33. Progestin-only contraception: Injectables and implants

    Article • Best Practice & Research Clinical Obstetrics & Gynaecology, August 2014, Elsevier

    Dr Chelsea B Polis

  34. Using Measurements of Unmet Need to Inform Program Investments for Health Service Integration

    Article • Studies in Family Planning, June 2014, Wiley

    Dr Chelsea B Polis

  35. Preference for Sayana® Press versus intramuscular Depo-Provera among HIV-positive women in Rakai, Uganda: a randomized crossover trial

    Article • Contraception, May 2014, Elsevier

    Dr Chelsea B Polis

  36. Assessing the effect of hormonal contraception on HIV acquisition in observational data

    Article • AIDS, October 2013, Wolters Kluwer Health

    Dr Chelsea B Polis

  37. Use of hormonal contraceptives and HIV acquisition in women: a systematic review of the epidemiological evidence

    Article • The Lancet Infectious Diseases, September 2013, Elsevier

    Dr Chelsea B Polis

  38. Cost-effectiveness of increased access to emergency contraceptive pills: probably not

    Article • Contraception, April 2013, Elsevier

    Dr Chelsea B Polis

  39. Effect of hormonal contraceptive methods on HIV disease progression

    Article • AIDS, March 2013, Wolters Kluwer Health

    Dr Chelsea B Polis

  40. Hormonal contraceptive use and female-to-male HIV transmission

    Article • AIDS, February 2013, Wolters Kluwer Health

    Dr Chelsea B Polis

  41. Modelling the global competing risks of a potential interaction between injectable hormonal contraception and HIV risk

    Article • AIDS, January 2013, Wolters Kluwer Health

    Dr Chelsea B Polis

  42. Effect of injectable contraceptive use on response to antiretroviral therapy among women in Rakai, Uganda

    Article • Contraception, December 2012, Elsevier

    Dr Chelsea B Polis

  43. Missed Conceptions or Misconceptions: Perceived Infertility Among Unmarried Young Adults In the United States

    Article • Perspectives on Sexual and Reproductive Health, February 2012, Guttmacher Institute

    Dr Chelsea B Polis

  44. Abortion and mental health: guidelines for proper scientific conduct ignored

    Article • The British Journal of Psychiatry, January 2012, Royal College of Psychiatrists

    Dr Chelsea B Polis

  45. Trends and correlates of hormonal contraceptive use among HIV-infected women in Rakai, Uganda, 1994–2006

    Article • Contraception, June 2011, Elsevier

    Dr Chelsea B Polis

  46. Effect of Hormonal Contraceptive Use Before HIV Seroconversion on Viral Load Setpoint Among Women in Rakai, Uganda

    Article • JAIDS Journal of Acquired Immune Deficiency Syndromes, February 2011, Wolters Kluwer Health

    Dr Chelsea B Polis

  47. Facing the facts on advance provision of emergency contraception

    Article • Contraception, December 2010, Elsevier

    Dr Chelsea B Polis

  48. Author response to the commentary “Evaluating research on abortion and mental health”

    Article • Contraception, October 2010, Elsevier

    Dr Chelsea B Polis

  49. Effect of hormonal contraceptive use on HIV progression in female HIV seroconverters in Rakai, Uganda

    Article • AIDS, July 2010, Wolters Kluwer Health

    Dr Chelsea B Polis

  50. Abortion and long-term mental health outcomes: a systematic review of the evidence

    Article • Contraception, December 2008, Elsevier

    Dr Chelsea B Polis

  51. Coerced sexual debut and lifetime abortion attempts among women in Rakai, Uganda

    Article • International Journal of Gynecology & Obstetrics, November 2008, Wiley

    Dr Chelsea B Polis

  52. Male circumcision and prevention of HIV and sexually transmitted infections

    Article • Current Infectious Disease Reports, March 2008, Springer Science + Business Media

    Dr Chelsea B Polis

  53. The effect of male circumcision on sexual satisfaction and function, results from a randomized trial of male circumcision for human immunodeficiency virus prevention, Rakai, Uganda

    Article • BJU International, December 2007, Wiley

    Dr Chelsea B Polis

  54. Advance Provision of Emergency Contraception for Pregnancy Prevention

    Article • Obstetrics and Gynecology, December 2007, Wolters Kluwer Health

    Dr Chelsea B Polis

  55. Advance provision of emergency contraception for pregnancy prevention

    Article • Cochrane Database of Systematic Reviews, April 2007, Wiley

    Dr Chelsea B Polis

  56. Impact of Maternal HIV Coinfection on the Vertical Transmission of Hepatitis C Virus: A Meta-analysis

    Article • Clinical Infectious Diseases, April 2007, Oxford University Press (OUP)

    Dr Chelsea B Polis

  57. Population Effect of Increased Access to Emergency Contraceptive Pills

    Article • Obstetrics and Gynecology, January 2007, Wolters Kluwer Health

    Dr Chelsea B Polis

  58. Abortion education in nurse practitioner, physician assistant and certified nurse–midwifery programs: a national survey

    Article • Contraception, April 2006, Elsevier

    Dr Chelsea B Polis

  59. Reproductive health, the Arab world and the internet: usage patterns of an Arabic-language emergency contraception web site

    Article • Contraception, August 2005, Elsevier

    Dr Chelsea B Polis

  60. Accessibility of emergency contraception in California’s catholic hospitals

    Article • Women s Health Issues, July 2005, Elsevier

    Dr Chelsea B Polis

  61. Effect of nurses' attitudes on hospital-based abortion procedures in Massachusetts

    Article • Contraception, January 2004, Elsevier

    Dr Chelsea B Polis