Nethery E, Xu C, Chan C, Helmer-Smith M, Stucchi A, Mooney D, Pammett R, Zusman E, Dunn S, Norman W, Guarna G, Law MR, Schummers L. Mifepristone access through community pharmacies when regulated as a routine prescription medication. JAMA Open; 2025 Nov 6;8;(11):e2542096. https://doi.org/10.1001/jamanetworkopen.2025.42096
Schummers L, Norman WV. Personal viewpoint: In reproductive health policy and access, Canada is not the 51st US state. BMJ Sexual & Reproductive Health. 2025 Aug 27. https://doi.org/10.1136/bmjsrh-2025-202912
Schummers L, Cheng L, Odendaal M, Rodriguez-Llorian E, Kuo IF, Norman WV, Stucchi A, Black A, Helmer-Smith M, Nethery E, Downey AK, Guindon GE, McGrail K, Brennand E, Lee S, Metcalfe A, Bryan S, Darling EK, Poliquin V, Bertazzon S, Nickel N, Clement F, Law MR. Effect of universal no-cost coverage on contraception use: population-based controlled interrupted time series. BMJ 2025;390:e083874. https://doi.org/10.1136/bmj-2024-083874
Dangerfield M, Johnston BK, Nethery E, Torry H, Sagert P, Ennis M, Ohtsuka M, Munro S, Schummers L. Intrauterine contraception device satisfaction and continuation in an urban youth clinic in British Columbia, Canada: a longitudinal survey study. J Obstet Gynaecol Can 2025 47(9):103033. https://doi.org/10.1016/j.jogc.2025.103033
Nethery E, Hutcheon JA, Lee J, Janssen P, Schummers L. Effects of a province-wide change in gestational diabetes screening policy on treatment and newborn birth weight. Diabetes Care 2025;48(8):1410-1417. https://doi.org/10.2337/dc25-0480
Downey AK, Hanna SE, Levine M, Schummers L, Guindon E. The association between universal pharmacare and contraceptive dispensations among youth. JAMA Pediatrics 2025; August 18. https://doi.org/10.1001/jamapediatrics.2025.2585
Schummers L, Dunn S, Cheng C, Norman WV. Trends in abortion rates in Ontario, Canada, 2012-2022. JAMA Network Open. 2025 April 11;8(4):e254516. https://doi.org/10.1001/jamanetworkopen.2025.4516
Schummers L, Law MR, McGrail K, Darling EK, Zusman E, Dunn S, Kaczorowski J, Gayowsky A, Gozydra P, Norman WV. Changes over time in local access to mifepristone dispensed by community pharmacies for medication abortion in Ontario: a population-based repeated cross-sectional cohort study. CMAJ. 2025 April 7;197:E345-354. https://doi.org/10.1503/cmaj.241505
Nethery E, Pickerill K, Butska L, Turner M, Hutcheon JA, Janssen P, Schummers L. Perinatal outcomes following non-adherence to guideline-based screening for gestational diabetes in British Columbia, Canada: A population-based cohort study. Acta Obstetricia et Gynecologica Scandinavica. 2025; 104(5): 839-849. First published online March 17. https://doi.org/10.1111/aogs.15098
Hetherington E, Darling EK, Harper S, Nguyen F, Schummers L, Norman WV. Inequalities in access to prenatal care during the COVID-19 pandemic analysis of a population-based cohort. Paediatric and Perinatal Epidemiology. 2024; 38(4): 291-301. https://doi.org/10.1111/ppe.13050
Schummers L, Hutcheon JA. To the editor: Study quality must be considered when evaluating long-term outcomes of antenatal corticosteroid therapy in children. JAMA Pediatrics. 2022; 176(10):1048-1049. https://doi.org/10.1001/jamapediatrics.2022.2855
Luke S, Hobbs A, Mak S, Der K, Pederson A, Schummers L. Travel time to delivery facility and adverse maternal and perinatal birth outcomes: a population-based cohort of low-risk pregnancies in British Columbia. J Obstet Gynecol Can. 2022 44(8):886-894. https://doi.org/10.1016/j.jogc.2022.04.009
Schummers L; McGrail K, Darling EK, Dunn S, Gayowsky A, Kaczorowski J, Norman WV. A more accurate approach to define induced abortion cohorts using linked administrative data: an application to Ontario, Canada. International Journal of Population Data Science. 2022; 7(1). https://doi.org/10.23889/ijpds.v7i1.1700
Schummers L, Darling EK, Dunn S, McGrail K, Gayowsky A, Law MR; Lea-Laba T; Kaczorowski J, Norman WV. Abortion safety and use with normally prescribed mifepristone in Canada. New England Journal of Medicine. 2022; 386: 57-67. https://doi.org/10.1056/NEJMsa2109779
Schummers L, Oveisi N, Hutcheon JA, Ahrens KA, Liauw J, Ohtsuka M, Norman WV. Early pregnancy loss incidence in high income settings: a protocol for a systematic review. Systematic Reviews. 2021; 10: 274. https://doi.org/10.1186/s13643-021-01815-1
Nethery E, Schummers L, Levine A, Souter V, Gordon W. Birth Outcomes for Planned Home and Licensed Freestanding Birth Center Births in Washington State. Obstetrics & Gynecology. 2021;138(5): 693-702. https://doi.org/10.1097/aog.0000000000004578
Chan M, Munro S, Schummers L, Mackenzie F, Albert A, Soon J, Ragsdale P, Fitzsimmons B, Renner R. Dispensing and practice use patterns, facilitators and barriers for uptake of ulipristal acetate emergency contraception in British Columbia: a mixed-methods study. CMAJ Open. 2021 (9)4:E1097-1104. https://doi.org/10.9778/cmajo.20200193
Schummers L, Liauw J. Commentary: Long interpregnancy interval and hypertensive disorders of pregnancy: difficulties in interpreting and translating data to clinical practice. Paediatric and Perinatal Epidemiology; Epidemiology; 2021; 35(4): 425-427. https://doi.org/10.1111/ppe.12795
Schummers L, Hutcheon JA, Norman WV, Liauw J, Bolatova T, Ahrens KA. Short interpregnancy interval and pregnancy outcomes: How important is the timing of confounding variable ascertainment? Paediatric and Perinatal Epidemiology; 2021; 35(4): 428-437. https://doi.org/10.1111/ppe.12716
Schummers L. Interpregnancy interval and severe maternal morbidity: what can we learn from vital records data? Paediatric and Perinatal Epidemiology; 2020;34(4): 388-391. https://doi.org/10.1111/ppe.12587
Schummers L, Hacker MR, Williams PL, VanderWeele TJ, McElrath TE, Hutcheon JA, Hernandez-Diaz S. Variation in relationships between maternal age at first birth and pregnancy outcomes by maternal race: a population-based cohort study in the United States. BMJ Open 2019;9:e033697. https://doi.org/10.1136/bmjopen-2019-033697
Nethery E, Schummers L, McGinley S, Dunn, S, Norman, WV. Household income and contraceptive methods among female youth: a cross-sectional study using the Canadian Community Health Survey (2009–2010 and 2013–2014). CMAJ Open. 2019; 7(4): E646-E653. https://doi.org/10.9778/cmajo.20190087
Schummers L, Norman WV. Abortion services in Canada: access and safety. Canadian Medical Association Journal. 2019;191(19): E517-E518. https://doi.org/10.1503/cmaj.190477
Vedam S, Stoll K, Khemet T, Cheney M, Rubashkin N, Strauss N, McLemore M, Cadena M, Nethery E, Rushton E, Henderson Z, Schummers L, DeClercq E. The Giving Voices to Mothers Study – inequity and mistreatment during pregnancy and childbirth in the US. Reproductive Health; 2019 16(77): https://doi.org/10.1186/s12978-019-0729-2
Schummers L, Hutcheon JA, Hernandez-Diaz S, Williams PL, Hacker MR, VanderWeele TJ, Norman WV. Association of Short Interpregnancy Interval with Pregnancy Outcomes According to Maternal Age. JAMA Internal Medicine 2018; 178(12): 1661-1670. https://doi.org/10.1001/jamainternmed.2018.4696
Schummers L, Hutcheon JA, Hacker MR, VanderWeele TJ, Williams PL, McElrath TE, Hernandez-Diaz S. Absolute risks of obstetric outcomes by maternal age at first birth: a population-based cohort. Epidemiology, 2018;29(3): 379-387. https://doi.org/10.1097/EDE.0000000000000818
Asgharpour M, Viallreal S, Schummers L, Hutcheon JA, Shaw D, Norman WV. Inter-pregnancy interval and pregnancy outcomes among women with delayed childbearing: protocol for a systematic review. Systematic Reviews. 2017;6(1):75. https://doi.org/10.1186/s13643-017-0464-0
Schummers L, Himes K, Bodnar L, Hutcheon J. Predictor characteristics necessary for building a clinically useful risk prediction model: a simulation study. BMC Medical Research Methodology. 2016;16:123. https://doi.org/10.1186/s12874-016-0223-2
Schummers L, Hutcheon J, Bodnar L, Lieberman E, Himes K. Risk of adverse pregnancy outcomes by prepregnancy body mass index: a population-based study to inform prepregnancy weight loss counseling. Obstet Gynecol. 2015;125(1): 133-143. https://doi.org/10.1097/aog.0000000000000591
Vedam S, Stoll K, Schummers L, Fairbrother N, Rogers J, Dharamsi S, Kornelsen J, Klein M, Liston R Kaczorowski J, Thordarson D. The Canadian Birth Place Study: Examining maternity care provider attitudes and interprofessional conflict around planned home birth. BMC Pregnancy and Childbirth. 2014; 14(1): 353-364. https://doi.org/10.1186/1471-2393-14-353
Vedam S, Stoll K, Schummers L, Rogers J, Paine L. Home birth in North America: Attitudes and practice of US Certified Nurse-Midwives and Canadian Registered Midwives. Journal of Midwifery & Women’s Health 2014, 59(2): 141-152. https://doi.org/10.1111/jmwh.12076
Ellis C, Stoll K, Schummers L, Carty E, Vedam S. Assessment of the Midwifery Education Program at the University of British Columbia: A survey of the first 5 cohorts of graduates and midwife mentors. Canadian Journal of Midwifery Research & Practice 2013, (12)1: 8-17. https://doi.org/10.22374/cjmrp.v12i1.95
Vedam S, Schummers L, Stoll K, Fairbrother N, Rogers J, Dharamsi S, Kornelsen J, Klein M, Liston R Kaczorowski J. The Canadian Birth Place Study: Describing maternity practice and providers’ exposure to home birth. Midwifery 2012, 28(5): 600-608. https://doi.org/10.1016/j.midw.2012.06.011
Fairbrother N, Stoll K, Schummers L, Carty E. Obstetrician, Family Physician, or Midwife: Preferences of the Next Generation of Maternity Care Consumers. Canadian Journal of Midwifery Research & Practice; 2012, 11(2): 8-15. https://doi.org/10.22374/cjmrp.v11i2.106
Schummers L, Vedam, S, Fairbrother N, Klein M, Kaczorowski J. The Canadian Birth Place Study: Development, validation, and administration of a questionnaire to multi-disciplinary maternity care providers. Canadian Journal of Midwifery Research & Practice 2012, 11(1): 35-45. https://doi.org/10.22374/cjmrp.v11i1.105
Ellis C, Schummers L, Rostoker M. Reducing Maternal Mortality in Uganda: Applying the “Three Delays” Framework. International Journal of Childbirth 2011, 1(4): 218-229. https://doi.org/10.1891/2156-5287.1.4.218
Vedam S, Stoll K, White S, Aaker J, Schummers L. Nurse-midwives’ experiences with planned home birth: impact on attitudes and practice. Birth 2009, 36(4): 274-282. https://doi.org/10.1111/j.1523-536X.2009.00354.x