Image description

RESEARCH OVERVIEW

My research advances evidence-based sexual and reproductive health policy and practice globally. This work has informed policy guidance in over 20 countries, and has been cited extensively in clinical practice guidelines, including by the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC). I have published in leading journals including Lancet Infectious Diseases, BMJ, AIDS, and Obstetrics & Gynecology, with several papers achieving exceptional public engagement metrics.


This page lists 10 featured publications with brief annotations. Next, this page provides a comprehensive list of my peer-reviewed publications, preprints, published analytic code, book chapters, technical reports, letters to the editor and other post-publication comments, and selected other materials reflecting substantial involvement. See also "Talks and Commentaries" for materials oriented towards public engagement.


Key research themes include:

- Contraceptive effectiveness, safety, acceptability, and impact

- Fertility awareness-based methods (FABMs) and FemTech

- Abortion incidence, access, and post-abortion care

- Perceived infertility and infertility prevalence in low-income countries

- Research integrity in sexual and reproductive health

- Contraceptive-induced menstrual bleeding changes (CIMBCs)

- Intersections between hormonal contraception and HIV-related outcomes

- COVID-19 impacts on sexual and reproductive health services

- Multipurpose prevention technologies (MPTs)

- Male circumcision and sexual satisfaction


Click for an up-to-date list of publications archived on PubMed, or refer to ORCID profile. See my Google Scholar profile for current citation metrics.


TEN FEATURED PUBLICATIONS


1. Contraceptive effectiveness: a synthesis of the literature

Polis CB, Bradley SEK, Micks EA, Steiner MJ. Contraception 2026;154:111282.

Comprehensive synthesis consolidating decades of contraceptive effectiveness data for clinical practice.


2. Hormonal contraception and HIV acquisition in women: systematic reviews (2013 review and 2016 update)

Polis CB, Curtis KM. Lancet Infectious Diseases 2013;13(9):797-808.

Polis CB, Curtis KM, Hannaford PC, et al. AIDS 2016;30(17):2665-2683.

Landmark systematic review (2013) and definitive update (2016) that informed WHO and CDC policy, cited in clinical practice guidelines worldwide.


3. Editorial: Contraception Special Issue on the Emergence of "FemTech" within the Sexual and Reproductive Health Landscape Polis CB, Simmons RG, Cason P, Foster AM, Westhoff CL. Contraception 2026; https://doi.org/10.1016/j.contraception.2026.111390.

Synthesis editorial for a landmark special issue in Contraception, bringing peer-reviewed research to bear on the rapidly evolving FemTech landscape, spanning evidence standards, regulation, contraceptive effectiveness, and reproductive justice.


4. Effectiveness of Fertility Awareness-Based Methods for Pregnancy Prevention: A Systematic Review

Peragallo Urrutia R, Polis CB, Jensen ET, et al. Obstetrics & Gynecology 2018;132(3):591-604.

First rigorous systematic review of FABM effectiveness, informing CDC guidance and clinical practice.


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

Polis CB, Cox CJ, Tunçalp Ö, McClain A, Thoma ME. Human Reproduction 2017;32(5):1064-1074.

Methodological innovation applying current duration approach to DHS data to estimate infertility prevalence in resource-limited settings.


6. There Might Be Blood: a scoping review on women's responses to contraceptive-induced menstrual bleeding changes

Polis CB, Hussain R, Berry A. Reproductive Health 2018;15:114.

Scoping review elevating the importance of contraceptive induced menstrual bleeding changes to contraceptive satisfaction, summarizing data from 100 studies. Inspired major interest in and programs of research on CIMCs.


7. Abortion and long-term mental health outcomes: a systematic review

Charles V, Polis CB, Sridhara S, Blum R. Contraception 2008;78(6):436-450.

Early systematic review critically examining methodological quality of abortion-mental health research, establishing standards for evidence evaluation in this contested area and laying groundwork for continued efforts to correct the scientific record.


8. Missed conceptions or misconceptions: Perceived infertility among unmarried young adults in the United States

Polis CB, Zabin LS. Perspectives on Sexual and Reproductive Health 2012;44(1):30-38.

Early examination of perceived infertility as a distinct phenomenon among young adults in the US, establishing a research area I later expanded in Malawi and Ghana, and which has since been taken up by many other researchers globally.


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

Polis CB. Reproductive Health 2018;15:113.

Research integrity work leading to retraction of a flawed paper and inspiring broader advocacy for scientific rigor in FemTech.


10. Advance provision of emergency contraception for pregnancy prevention

Polis CB, Grimes DA, Schaffer K, Blanchard K, Glasier A, Harper CC. The Cochrane Database of Systematic Reviews 2007; Issue 2. Art. No.: CD005497. (updated 2010)

Cochrane systematic review applying the most rigorous standards for evidence synthesis globally. Republished in Obstetrics & Gynecology and updated in 2010, reflecting sustained clinical relevance.


​

COMPREHENSIVE LIST OF PUBLICATIONS


Peer-reviewed publications  (in reverse chronological order)

  1. How Do Fertility-Tracking Technologies define Ovulation and Anovulation? A Structured Landscape Analysis. Wallis B, Lehto DL, Thapa I, Polis CB, Simmons RG. Contraception 2026. https://www.contraceptionjournal.org/article/S0010-7824(26)00214-3/fulltext  
  2. Impacts of Contraception on Future Fertility: Addressing Concerns to Improve Understanding. Begg L, Owolabi O, Polis CB. Studies in Family Planning 2026. https://doi.org/10.1111/sifp.70065. Article metrics.
  3. Editorial: Contraception Special Issue on the Emergence of "FemTech" within the Sexual and Reproductive Health Landscape. ​Polis CB, Simmons RG, Cason P, Foster AM, Westhoff CL. ​Contraception 2026; https://doi.org/10.1016/j.contraception.2026.111390. Article metrics.
  4. The Association Between Female Genital Cutting and Time-to-Pregnancy Among Women of Reproductive Age – Applying the Current Duration Approach in Demographic and Health Survey Data. Drew LB, Polis CB, Cox CM, Tunçalp Ö, McLain AC, Thoma ME. Culture, Health, and Sexuality 2026;1–13: https://doi.org/10.1080/13691058.2025.2604684.
  5. Contraceptive effectiveness: a synthesis of the literature. Polis CB, Bradley SEK, Micks EA, Steiner MJ. Contraception 2026;154:111282. Article metrics.
  6. A comparison of acceptability of contraceptive vaginal rings, pills, and injectables among cisgender women in Kenya and Zimbabwe: protocol for a mixed-methods study. Polis CB, Obare FO, Bruce IV, et al. ​Gates Open Res 2025, 9:5. https://doi.org/10.12688/gatesopenres.16315.1
  7. Consensus recommendations for measuring the impact of contraception on the menstrual cycle in contraceptive clinical trials. Mackenzie ACL, Chung S, Hoppes E, et al. Contraception 2025: https://doi.org/10.1016/j.contraception.2025.110829i. Article metrics.
  8. ​Mifepristone as a non-emergency contraceptive among women of reproductive age: a protocol for systematic review and meta-analysis. Nkangu M, Frisendahl C, Polis C, Chen T, Sterling E, Gomperts R, Plagianos M, Haddad L, Gemzell Danielsson K. BMJ Open 2024;14:e090402. doi:10.1136/ bmjopen-2024-090402. Article metrics.  
  9. Knowledge of abortion legality among health facility staff in Ghana. Sheehy G, Polis C, Otupiri E, Moreau C. PLoS One 2024:19(8): e0308371. https://doi.org/10.1371/journal.pone.0308371. Article metrics.
  10. Correcting the scientific record on abortion and mental health outcomes. Littell JH, Abel KM, Biggs MA, Blum RW, Foster DG, Haddad LB, Major B, Munk-Olsen T, Polis CB, Robinson GE, Rocca CH, Russo NF, Steinberg JR, Stewart DE, Stotland NL, Upadhyay UD, van Ditzhuijzen J. BMJ 2024; 384;e076518. DOI: https://doi.org/10.1136/bmj-2023-076518. Article metrics.
  11. A Content Analysis of Reddit Users’ Posts about Challenges to Contraceptive care-seeking during COVID-19-related Restrictions in the United States. Pleasure ZH, Frohwirth LF, Li N, Polis CB. Journal of Health Communication 2022; DOI: 10.1080/10810730.2022.2157911. Article metrics.
  12. Impacts of COVID-19 on contraceptive and abortion services in low- and middle-income countries: a scoping review. Polis CB, Biddlecom A, Singh S, Ushie B, Rosman L, Saad A. Sexual and Reproductive Health Matters 2022; 30:1, DOI: 10.1080/26410397.2022.2098557. Article metrics.
  13. Global Research and Learning Agenda for Building Evidence on Contraceptive-Induced Menstrual Changes for Research, Product Development, Policies, and Programs. Hoppes EM et al. [version 1] Gates Open Res 2022 6;49. Article metrics.
  14. The infrastructural capacity of Ghanaian health facilities to provide safe abortion and post-abortion care: A cross-sectional study. ​Owolabi O, Riley T, Otupiri E, Polis CB, Larsen-Reindorf R. BMC Health Services Research 2021; 21(1104). Article metrics.
  15. Contraceptive and abortion practices of young Ghanaian women aged 15-24: evidence from a nationally representative survey. Keogh SC, Otupiri E, Castillo PW, Li N, Apenkwa J, Polis CB. Reproductive Health 2021;18(150). Article metrics.
  16. Use of fertility awareness-based methods for pregnancy prevention among Ghanaian women: a nationally representative cross-sectional survey. Polis CB, Otupiri E, Bell SO, Larsen-Reindorf R. Global Health Science and Practice 2021;9(2):318-331. Article metrics.
  17. Hormonal contraceptive use in Ghana: the role of method attributes and side effects in method choice and continuation. Keogh S, Otupiri E, Castillo P, Chiu D, Polis CB, Nakua E, Bell SO. Contraception 2021;104(3):235-245. Article metrics.
  18. Prevalence and correlates of perceived infertility in Ghana. Polis CB, Otupiri E, Hindin M, Chiu DW, Keogh SC, Aidoo C, Larsen-Reindorf R, Bell SO. Studies in Family Planning 2020;51(3):207-224. Article metrics.
  19. Estimating the incidence of abortion: using the Abortion Incidence Complications Methodology in Ghana, 2017. Polis CB, Castillo PW, Otupiri E, Keogh SC, Hussain R, Nakua EK, Larsen-Reindorf R, Bell SO. BMJ Global Health 2020;5:e002130. Article metrics.
  20. Estimating the incidence of abortion: a comparison of five approaches Ghana. Keogh SC, Otupiri E, Chiu DW, Polis CB, Hussain R, Bell SO, Nakua EK, Larsen-Reindorf R. BMJ Global Health 2020;5:e002129. Article metrics.
  21. Perceived infertility among young adults in Balaka, Malawi. Polis CB, Moore AM, Chilungo A, Yeatman S. International Perspectives on Sexual and Reproductive Health 2020; 46;61-72. Article metrics unavailable.
  22. Fertility awareness-based methods for pregnancy prevention. Peragallo Urrutia R, Polis CB. BMJ 2019; 366:14245. Article metrics.
  23. Pharmacokinetic, biologic, and epidemiologic differences in MPA- and NET-based progestin-only injectable contraceptives relative to the potential impact on HIV acquisition in women. Heffron R, Achilles SL, Dorflinger LJ, Hapgood JP, Kiarie J, Polis CB, Steyn PSS. 
  24. Contraception 2019; 99(4):199-204. Article metrics.
  25. Global contraceptive failure rates: who is most at risk? Bradley SEK, Polis CB, Bankole A, Croft T. Studies in Family Planning 2019; 50(1):3-24. Article metrics.
  26. Published analysis of contraceptive effectiveness of Daysy and DaysyView app is fatally flawed. Polis CB. Reproductive Health 2018;15:113. (Note: commentary led to the retraction of a flawed study, as described here; speaking out publicly about the flawed study led to a frivolous lawsuit, as described here) Article metrics.
  27. There Might Be Blood: a scoping review on women’s response to contraceptive-induced menstrual bleeding changes. Polis CB, Hussein R, Berry A. ​Reproductive Health 2018;15:114. Article metrics.
  28. Effectiveness of fertility awareness-based methods for pregnancy prevention in prospective studies: a systematic review. ​Peragallo Urrutia R, Polis CB, Jensen ET, Greene ME, Kennedy E, Stanford JB. Obstetrics and Gynecology 2018:132(3):591-604. Article metrics. ​
  29. Multiple contraceptive method use and prevalence of fertility awareness based method use in the United States, 2013-2015. Polis CB, Jones RK. Contraception 2018;98(3):188-192. Article metrics.
  30. Severity and management of postabortion complications among women in Zimbabwe, 2016: a cross-sectional study. Madziyire MG, Polis CB, Riley T, Sully EA, Owolabi O, Chipato T. BMJ Open 2018;8(2):e019658. Article metrics.
  31. ​Is a lower-dose, subcutaneous contraceptive injectable containing depot medroxyprogesterone acetate likely to impact women’s risk of HIV? Polis CB, Achilles SL, Hel Z, Hapgood JP. Contraception 2018;97(3):191-197. Article metrics.
  32. ​Modeling the impact of novel male contraceptive methods on reductions in unintended pregnancies in Nigeria, South Africa, and the United States. Dorman E, Perry B, Polis CB, Campo-Engelstein L, Shattuck D, Hamlin A, Aiken A, Trussell J, Sokal D. Contraception 2018;97(1):62-69. Article metrics.
  33. Hormonal contraceptive methods and HIV: research gaps and programmatic priorities. Riley HEM, Steyn PS, Achilles SL, Bass E, Gray AL, Polis CB, Kiarie JN. ​ Contraception 2017;96(2):67-71. Article metrics.
  34. Incidence of induced abortion in Malawi, 2015. ​ Polis CB, Mhango C, Philbin J, Chimwaza W, Chipeta E, Msusa A. PLoS ONE 2017;12(4): e0173639. Article metrics.
  35. Estimating infertility prevalence in low-to-middle income countries: an application of a current duration approach to Demographic and Health Survey data. Polis CB, Cox CJ, Tunçalp Ö, McClain A, Thoma ME. Human Reproduction 2017;32(5):1064-1074. Article metrics.
  36. An updated systematic review of epidemiological evidence on hormonal contraceptive methods and HIV acquisition in women. Polis CB, Curtis KM, Hannaford PC, Phillips SJ, Chipato T, Kiarie JN, Westreich DJ, Steyn PS. AIDS 2016;30(17):2665-2683. Article metrics.
  37. Levonorgestrel in contraceptives and multipurpose prevention technologies: does this progestin increase HIV risk or interact with antiretrovirals? Polis CB, Phillips SJ, Hillier SL, Achilles SL. AIDS 2016;30(17):2571-2576. Article metrics.
  38. Typical use contraceptive failure rates in 43 countries with Demographic and Health Survey data: summary of a detailed report. Polis CB, Bradley SEK, Bankole A, Onda T, Croft T, Singh S. Contraception 2016;94(1):11-17. Article metrics.
  39. The safety of hormonal contraceptives for women living with HIV and their sexual partners. Phillips SJ, Polis CB, Curtis KM. Contraception 2016;93(1):11-16. Article metrics.
  40. Multipurpose prevention technologies for sexual and reproductive health: mapping global needs for introduction of new preventive products. Schelar E, Polis CB, Essam T, Looker KJ, Bruni L, Chrisman C, Manning J. Contraception 2016;93(1):32-43. Article metrics.
  41. Contraceptive methods and risk of HIV acquisition in women or female-to-male transmission. Haddad LB, Polis CB, Sheth A, Brown J, Kourtis A, King C, Chakraborty R, Ofotokun I. Current HIV/AIDS Reports 2014;11(4):447-58. Article metrics.
  42. Hormonal contraceptive methods and risk of HIV acquisition in women: a systematic review of epidemiological evidence. Polis CB, Phillips SJ, Curtis KM, Westreich DJ, Steyn PS, Raymond EG, Hannaford P, Norris Turner A. Contraception 2014;90(4):360-390. Article metrics.
  43. Progestin-only contraception: injectables and implants. Jacobstein R, Polis CB. Best Practice and Research Clinical Obstetrics and Gynecology 2014;28:795-806. Article metrics.
  44. Using measurements of unmet need to inform program investments for health service integration. Malarcher S, Polis CB. Studies in Family Planning 2014;45(2):263-275. Article metrics.
  45. Preference for Sayana Press versus intramuscular Depo-Provera among HIV-positive women in Rakai, Uganda: a randomized crossover trial. Polis CB, Nakigozi GF, Nakawooya H, Mondo G, Makumbi F, Gray RH, and members of the RHSP Sayana Press study team.  Contraception 2014;89(5):385-395. Article metrics.
  46. Assessing the effect of hormonal contraception on HIV acquisition: analytic approaches and challenges in observational data. Polis CB, Westreich D, Balkus J, Heffron R, and participants of the 2013 HC-HIV observational analysis meeting. AIDS 2013;27(Suppl 1): S35-43. Article metrics.
  47. Use of hormonal contraceptive methods and HIV acquisition in women: a systematic review of the epidemiological evidence. Polis CB, Curtis KM. Lancet Infectious Diseases 2013;13(9):797-808. Article metrics.
  48. Hormonal contraception and female-to-male HIV transmission: a systematic review of the epidemiological evidence. Polis CB, Phillips SJ, Curtis KM. AIDS 2013;27(4):493-505. Article metrics.
  49. Effect of hormonal contraceptive methods on HIV disease progression: a systematic review. Phillips SJ, Curtis KM, Polis CB. AIDS 2013;27(5):787-794. Article metrics.
  50. Modeling the global competing risks of a potential interaction between injectable hormonal contraception and HIV risk. Butler AR, Smith JA, Polis CB, Gregson S, Stanton D, Hallett TB. AIDS 2013;27(1):105-113. Article metrics.
  51. Effect of injectable contraceptive use on response to antiretroviral therapy among women in Rakai, Uganda. Polis CB, Nakigozi G, Ssempijja V, Makumbi F, Boaz I, Reynolds S, Ndyanabo A, Lutalo T, Wawer M, Gray R. Contraception 2012;86(6):725-30. Article metrics.
  52. Missed conceptions or misconceptions: Perceived infertility among unmarried young adults in the United States. Polis CB, Zabin LS. Perspectives on Sexual and Reproductive Health 2012;44(1):30-38. Article metrics. 
  53. Effect of hormonal contraceptive use prior to seroconversion on HIV viral load set point among women in Rakai, Uganda. Polis CB, Gray RH, Bwanika JB, Kigozi G, Kiwanuka N, Nalugoda F, Kagaayi J, Lutalo T, Serwadda D, Wawer MJ. Journal of Acquired Immune Deficiency Syndromes 2011;56(2):125-130. Article metrics.
  54. Trends and correlates of hormonal contraceptive use among HIV-infected women in Rakai, Uganda, 1994-2006. Polis CB, Gray RH, Lutalo T, Nalugoda F, Kagaayi J, Kigozi G, Kiwanuka N, Serwadda D, Wawer MJ. Contraception 2011;83(6):549-555. Article metrics unavailable.
  55. Effect of hormonal contraceptive use on HIV progression in female HIV seroconverters in Rakai, Uganda. Polis CB, Wawer MJ, Kiwanuka N, Laeyendecker O, Kagaayi J, Lutalo T, Nalugoda F, Kigozi G, Serwadda D, Gray RH. AIDS 2010;24(12):1937-1944. Article metrics.
  56. Coerced sexual debut and lifetime abortion attempts among women in Rakai, Uganda. Polis CB, Lutalo T, Wawer M, Serwadda D, Kigozi G, Nalugoda F, Kiwanuka N, Gray R. International Journal of Gynecology and Obstetrics 2009;104(2):105-109. Article metrics unavailable.
  57. Abortion and long-term mental health outcomes: a systematic review. Charles V, Polis CB, Sridhara S, Blum R. Contraception 2008;78(6):436-450. Article metrics.
  58. The effect of male circumcision on sexual satisfaction and function, results from a randomized trial of male circumcision for HIV prevention, Rakai, Uganda. Kigozi G, Watya S, Polis CB, Buwembo D, Kiggundu V, Wawer MJ, Serwadda D, Nalugoda F, Kiwanuka N, Ssempijja V, Makumbi F, Gray RH. British Journal of Urology International 2008;101(1):65-70. Article metrics.
  59. Advance provision of emergency contraception for pregnancy prevention. Polis CB, Grimes DA, Schaffer K, Blanchard K, Glasier A, Harper CC. The Cochrane Database of Systematic Reviews 2007; Issue 2. Art. No.: CD005497. DOI: 10.1002/14651858.CD005497.pub2.  Updated in 2010. Article metrics.
  60. Advance provision of emergency contraception for pregnancy prevention: A meta-analysis. [Republication of Cochrane Review]. Polis CB, Schaffer K, Blanchard K, Glasier A, Harper CC, Grimes DA. Obstetrics and Gynecology 2007;110(6):1379-88. Article metrics.
  61. Impact of maternal HIV co-infection on vertical transmission of Hepatitis C virus: a meta-analysis. Polis CB, Shah SN, Johnson K, Gupta A. Clinical Infectious Diseases 2007; 44(8):1123-31. Article metrics.
  62. Population impact of increased access to emergency contraceptive pills: a systematic review. Raymond E, Trussell J, Polis CB. Obstetrics and Gynecology 2007;109(1):181-8. Article metrics.
  63. Abortion education in nurse practitioner, physician assistant, and certified nurse-midwifery programs: A national survey. Foster A, Polis C, Allee MK, Simmonds K, Zurek M, Brown A. Contraception 2006;73(4):408-14. Article metrics.
  64. Disseminating on-line reproductive health information in Arabic: Results from a survey of users of an emergency contraception website. Foster A, Wynn L, Rouhana A, Polis C, Trussell J. CyberOrient 2006:1(2). Available online at http://www.ahjur.org/cyber2/index.php. Article metrics unavailable.
  65. Reproductive health, the Arab world, and the internet: Usage patterns of an Arabic-language emergency contraception website. Foster AM, Wynn L, Rouhana A, Polis C, Trussell J. Contraception 2005;72(2):130-7. Article metrics.
  66. Accessibility of emergency contraception in California’s Catholic hospitals. Polis C, Schaffer K, Harrison T. Women’s Health Issues 2005;15(4):174-8.​ Article metrics.
  67. Effect of nurses’ attitudes on hospital-based abortion procedures in Massachusetts. Kade K, Kumar D, Polis C, Schaffer K. Contraception 2004;69(1):59-62. Article metrics unavailable.


PREPRINTS

  1. A comparison of acceptability of contraceptive vaginal rings, pills, and injectables among cisgender women in Kenya and Zimbabwe: protocol for a mixed-methods study. Polis CB, Obare FO, Bruce IV, et al. Dec 2024. VeriXiv
  2. The Global Interdisciplinary Group Technique: A Virtual Consensus-Building Methodology for Developing Recommendations among International Interdisciplinary Expert Groups. Chung S, Mackenzie A, Hoppes E, et al. Nov 2024. SSRN.
  3. Consensus recommendations for measuring the impact of contraception on the menstrual cycle in contraceptive clinical trials. Mackenzie ACL, Chung S, Hoppes E, et al. medRxiv 2024.04.04.24305350.


ANALYTIC CODE

  1. 2018 Ghana Health Facility Survey Abortion Knowledge. Guttmacher Institute (Polis CB, Principal Investigator). Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor]. Jan 2024. 
  2. Code replicating an analysis to estimate infertility prevalence in DHS data in Nigeria using a current duration approach. Polis CB, Cox C, Tunçalp Ö, McLain A, & Thoma M. June 2020. 


BOOK CHAPTERS

  1. Effectiveness, safety, and comparative side effects. Bradley SEK, Polis CB, Micks EA, Steiner MJ. In: Contraceptive Technology. 22nd Ed. Burlington, MA: Jones-Bartlett Learning, 2023.
  2. Fertility Awareness Based Methods. Peragallo Urrutia, Polis CB. In: Contraceptive Technology. 22nd Ed. Burlington, MA: Jones-Bartlett Learning, 2023.
  3. Fertility Awareness Based Methods. Jennings V, Polis CB. In: Hatcher RA, Nelson AL, Trussell J, Cwiak C, Cason P, Policar MA, Edelman A, Aiken ARA, Marrazzo J, Kowal D, eds. Contraceptive Technology. 21st Ed. New York, NY: Ayer Company Publishers, Inc.; 2018. 
  4. Abortion in adolescents: Is there evidence for mental health problems? Charles VE, Polis CB, Sridhara SK, Blum RW.  In: Shweder RA, Bidell TR, Daily AC, Dixon SD, Miller PJ, Modell J, eds. The Child: An Encyclopedic Companion. Chicago: University of Chicago Press, 2009


TECHNICAL REPORTS

  1. Just the Numbers: Australia's Support for Global Sexual and Reproductive Health and Rights - New Evidence on Impacts of Investment in Family Planning. Odabaș M, Polis CB, Sully EA. New York: Guttmacher Institute, 2024. https://www.guttmacher.org/2026/04/just-numbers-australia-global-srhr-investment-impact-2024
  2. Adding It Up 2024: Investing in Sexual and Reproductive Health in Low- and Middle-Income Countries. Sully EA, Rosenberg JD, Tignor M, Geddes CE, Fernandez AD, Polis C. New York: Guttmacher Institute, 2025. DOI: https://doi.org/10.1363/2025.300735  
  3. Access to Contraceptive Services Among Adolescents in Uganda During the COVID-19 Pandemic. Makumbi F, Kibira SPS, Gibbwa L, Polis CB, Giorgio M, Segawa P, Namakula L, Mimbela R. New York: Guttmacher Institute, 2021. Article metrics.
  4. To Bleed or Not to Bleed? Why we need to integrate menstrual health in our sexual and reproductive health work. Punzi MC, Hekster O, Polis CB, Hussain R, Berry A. Sexual and Reproductive Health Matters, 2019.
  5. Social scientists review the evidence on the effects of abortion on women’s mental health and emotions. Biggs MA, Adler N, Charles V, Foster DG, Major B, Gomez AM, Munk-Olsen T, Polis CB, Rocca C, Roberts S, Steinberg JR, Stotland N, van Dizhuijzen J. June 2017. (Amicus brief submitted to Chile’s Constitutional Tribunal).
  6. Status of Modelling Efforts in the Field of Multipurpose Prevention Technologies: Summary Report.
  7. Dellplain L, Royal D, Polis CB. Initiative for Multipurpose Prevention Technologies, 2017.  
  8. Contraceptive Failure Rates in the Developing World: An Analysis of Demographic and Health Survey Data in 43 Countries.
  9. Polis CB, Bradley SEK, Bankole A, Onda T, Croft T, Singh S. New York: Guttmacher Institute, 2016.
  10. Sexual and Reproductive Health & Rights Indicators for the SDGs: recommendations for inclusion in the Sustainable Development Goals and the post-2015 development process. 
  11. Guttmacher Institute writing group: Barot S, Cohen S, Darroch J, Galati AJ,  Polis CB, Singh S, Starrs AM. Guttmacher Institute, 2015.
  12. Hormonal contraceptive methods for women at high risk of HIV and living with HIV: 2014 guidance statement. World Health Organization, 2014. Writing group included: Curtis K, Gaffield ML, Nanda K, Phillips S, Polis CB.
  13. Technical brief: drug interactions between hormonal contraceptive methods and HIV medications.
  14. USAID, PEPFAR, Department of Health and Human Services, CDC. October 2014.
  15. Technical brief: hormonal contraception and HIV. 
  16. USAID, PEPFAR, Department of Health and Human Services, CDC. September 2013.
  17. Hormonal Contraception and HIV: technical statement. Writing group included: Curtis K, Gaffield ML, Phillips S, Polis CB. World Health Organization, 2012.
  18. Male circumcision and prevention of HIV and sexually transmitted infections. Gray RH, Wawer MJ, Polis CB, Kigozi G, Serwadda D. Current Infectious Disease Reports 2008;10:121-7.
  19. Emergency contraception: ensuring access. Blanchard K, Polis C. Gynaecology Forum 2005;10(3):10-1.
  20. One choice is no choice: The need for female-controlled HIV prevention tools for women and girls worldwide. Backes K, Forbes A, Polis C.  Harvard Health Policy Review 2005;6(1):19-30.


LETTERS TO THE EDITOR AND OTHER POST-PUBLICATION COMMENTS

  1. Comment on "The Use of Time to Pregnancy for Estimating and Monitoring Human Fecundity From Demographic and Health Surveys". https://www.pubpeer.com/publications/B6E0DFE9B1BF18314EC8AC385E26F8. Polis CB. 2022. 
  2. Comment on “Contraception Selection, Effectiveness, and Adverse Effects: A Review”. https://pubpeer.com/publications/650AC61AA35DCF3D8A69E847D19092#1. Polis CB, Peragallo Urritia R, Stanford JB. 2022.
  3. Comment on the approach of Keiding et al. in applying a current duration approach to Demographic and Health Survey Data. Polis CB, Cox CM, Tunçalp Ö, McLain AC, Thoma ME. Epidemiology 2021;32(5):16-17.
  4. Comment on “Improving usability and pregnancy rates of a fertility monitor by an additional mobile application: results of a retrospective efficacy study of Daysy and DaysyView app”. https://pubpeer.com/publications/E38D4D3CDA94B1B3D2D47A2E80007A. Polis CB. 2019.
  5. Comment on PMID 27680324: Association of Hormonal Contraception with Depression. Polis CB. Merkatz RB. In: PubMed Commons (discontinued in 2018). Bethesda (MD): National Library of Medicine; 2016 Nov 7.
  6. Cost-effectiveness of increased access to emergency contraceptive pills: probably not.  [Letter to the Editor] Raymond EG, Trussell J, Polis CB. Contraception 2013;87(4):504. Article metrics.
  7. Coleman ignores established guidelines for proper scientific conduct of meta-analysis [Letter to the Editor]. Polis CB, Charles VE, Blum R. British Journal of Psychiatry 2012; 200(1):76-77. Article metrics.
  8. Facing the facts on advance provision of emergency contraception [Letter to the Editor]. Polis CB, Raymond EG, Trussell J. Contraception 2010;82(6):579-580.
  9. Author Response to Commentary "Evaluating research on abortion and mental health” [Letter to the Editor]. Charles VE, Polis CB, Sridhara S, Blum R. Contraception 2010;82(4):392-393.


SELECTED OTHER MATERIALS REFLECTING SUBSTANTIAL INVOLVEMENT

  1. Contributor to Medical Eligibility Criteria for Contraceptive Use, 5th edition. WHO, 2015.
  2. Contributor to Hormonal contraceptive methods for women at high risk of HIV and living with HIV: 2014 Guidance statement from the World Health Organization - WHO, 2014
  3. Contributor to Contraceptive Evidence: Questions and Answers - Population Reference Bureau, 2013
  4. Systematic reviewer for Update to CDC's U.S. Medical Eligibility Criteria for Contraceptive Use, 2010: Revised Recommendations for the Use of Hormonal Contraception Among Women at High Risk for HIV Infection or Infected with HIV - CDC, 2012
  5. Contributor to What Works for Women and Girls - 2012
  6. Contributor to 2012 WHO guidance: Hormonal contraception and HIV: Technical Statement - WHO, 2012
  7. Reviewer for selected High Impact Practices for Family Planning briefs - USAID, 2011-2014