• Janssen, Patricia


    Investigator, BC Children's Hospital
    Professor and Co-Theme Leader, Maternal Child Health, School of Population and Public Health, University of British Columbia
    Associate Member, Department of Family Practice, Obstetrics and Gynecology and School of Nursing, University of British Columbia

    Degrees / Designations
    BSN, MPH, PhD
    Primary Area of Research
    Healthy Starts
    Secondary Area(s) of Research
    604-875-2424 ext. 5415
    Lab Phone
    Mailing Address

    School of Population and Public Health
    University of British Columbia
    2206 East Mall
    Vancouver, BC  V6T 1Z3

    Affiliate Websites
    Research Areas
    • Maternal/fetal/newborn health 
    • Clinical trials 
    • Epidemiology and population health

    I am a perinatal epidemiologist with a clinical background in obstetrical nursing. I  undertake clinical trials to evaluate methods of pregnancy and labour management and interventions for mothers at particularly high risk for experiencing adverse perinatal outcomes. I use the British Columbia Reproductive Care Program Perinatal Registry linked to Ministry of Health data to evaluate outcomes and cost of specific methods of delivering obstetrical care.

    Current Projects

    I am validating new standards for intrauterine growth stratified on sex and ethnicity. I have completed a large CIHR-funded multicentre trial of early labour management and am currently studying risk factors for prolonged latent phase labour. 


    I lead a knowledge translation initiative named Optimal Birth BC which is aimed at reducing variation in rates of caesarean section across B.C.’s health authorities. As part of Optimal Birth BC, I am conducting studies to evaluate the diagnosis and management of dystocia and adherence to clinical practice guidelines for diagnosis and management of fetal distress in labour. 


    I am also studying trajectories of women released from provincial prisons and developing predictive measures of recidivism based on health and social networking parameters.

    Selected Publications

    Laugen CM, Islam N, Janssen PA. "Social Support and Exclusive Breast feeding among Canadian Women." Paediatr Perinat Epidemiol. 2017 Apr 4. PMID: 27271342

    Munro S, Hui A, Salmons V, Solomon C, Gemmell E, Torabi N, Janssen PA. "SmartMom Text Messaging for Prenatal Education: A Qualitative Focus Group Study to Explore Canadian Women's Perceptions." JMIR Public Health Surveill. 2017 Mar 21. PMID: 28174149

    Celeste D. Bickford, Patricia A. Janssen. Maternal and newborn outcomes after a prior cesarean birth by planned mode of delivery and history of prior vaginal birth in British Columbia: a retrospective cohort study. CMAJO. April 14, 2015 vol. 3 no. 2 E158-E165. doi: 10.9778/cmajo.20140055.

    Eri T, Bondas T, Gross M, Janssen P, Green J. A balancing act in an unknown territory: A metasynthesis of first-time mothers’ experiences in early labour, Journal of Midwifery.2014. http://doi.org/10.1016/j.midw.2014.11.007. PMID: 25480147

    Jenniskens K, Janssen P. Newborn outcomes in British Columbia after caesarean section for non-reassuring fetal status. J Obstet Gynaecol Canada, 2015;37(3):207-213. PMID: 26001867

    K. Vallee-Pouliot, Janssen P. Home birth study fails to identify credentials of midwives conducting home birth. (Letter to Editor) American Journal of Obstetrics & Gynecology, 2014. Epub ahead of print DOI:http://dx.doi.org/10.1016/j.ajog.2014.10.028. PMID: 25446666

    Janssen P, Weissenger S. Women’s Perception of Pre-hospital Labour Duration and Obstetrical Outcomes; A Prospective Cohort Study, BMC Pregnancy and Childbirth. 2014 May 30;14:182. doi: 10.1186/1471-2393-14-182. PMID: 24884415

    Heaman M, Sword W, Akhtar-Danesh N, Bradford A, Tough S, Janssen P, Young D, Kingston D, Hutton E, Helewa M. Quality of prenatal care questionnaire: instrument development and testing.  BMC Pregnancy and Childbirth 2014. DOI: 10.1186/1471-2393-14-188. 1. PMID: 24894497

    Desmarais S,. Pritchard A, Lowder E, Janssen P. Intimate partner abuse before and during pregnancy as risk factors for postpartum mental health problems. BMC Pregnancy and Childbirth 2014; http://www. biomedcentral.com/1471-2393/14/132. PMID: 24708777

    Stoll K, Hall W, Janssen P, Carty, E. Why are young Canadians afraid of birth? A survey study of childbirth fear and birth preferences among Canadian university students. Midwifery 2013; http://dx.doi.org/10.1016/j.midw.2013.07.017. PMID: 23968778

    Hanley GE, Jansen PA. Ethnicity-specific birthweight distributions improve identification of term newborns at risk for short-term morbidity. American Journal of Obstetrics and Gynecology 2013; 209(5) 428.e1-6. doi:10.1016/j.ajog.2013.04.042.Epub 2013 June 28. PMID: 23816839

    Jahanfar S, Janssen P, Howard L, Dowswell T. Interventions for preventing or reducing domestic violence against pregnant women. Cochrane Database of Systematic Reviews 2013 Issue 2, Art. No.:CD009414. DOI:10/1002/14651858. PMID: 25390767

    Janssen P, MacKay K. Prediction of Repeat Visits by Victims of Intimate Partner Violence to a Level III Trauma Centre. ISRN Emergency Medicine, vol. 2012.doi:10.5402/2012/484681.

    Janssen P, Thiessen P, Kelly A, Demorest L, Abrahams R, Brown L. Auricular acupuncture for chemically dependent pregnant women. A randomized controlled trial of the NADA protocol. Journal Substance Abuse Treatment Prevention and Policy 2012;7:48. PMID: 23259913

    Janssen, P, Urquia M, Heaman M, O’Campo P, Thiessen, K. Risk Factors for Postpartum Depression among Abused and Non-abused Women, American Journal of Obstetrics & Gynecology 2012; 207:489-8. PMID: 16308128

    Harris S. Janssen P, Saxell L, Carty E, Petersen K. Effect of a collaborative interdisciplinary maternity care program on perinatal outcomes. Can Med Ass J, 2012;180;1885-1892. PMID: 22966055

    Hanley F, Janssen P. Ethnicity specific growth distributions for prediction of newborn morbidity. Journal of Obstetrics and Gynaecology Canada. J Obstet Gynaecol Can 2012;34(9):826–829. [SA]. PMID: 22971450

    Macnab A. Shadgan B, Janssen P, Rurak D. Fetal oxygenation measurement using wireless near-infrared spectroscopy. Proc. SPIE 8229, 822902 (2012);http://dx.doi.org/10.1117/12.906243. [SA]

    Daoud N, O’Campo P, Urquia M, Heaman M, Janssen, P, Smylie J, Thiessen,K. Prevalence of abuse and violence before, during and after pregnancy in a national sample of Canadian women. American Journal of Public Health, 2012;102:1893-1901. PMID: 22897526

    Janssen P, Desmarais S. Development and psychometric properties of the Satisfaction with early labour management questionnaire (ELSQ). Midwifery 2012;29:181-9. [FA]. PMID: 19239669

    Janssen P, Desmarais S. Women’s experiences with early labour management at home vs. in hospital: A randomized controlled Trial. Midwifery 2012;29:190-4. [FA]. PMID: 22901494

    Hanley G, Janssen P, Greyson D. A cross-sectional study of regional variation in the rates of caesarean section and assisted vaginal delivery in the population of British Columbia, Canada. Obstetrics and Gynecology, 2010;115:1201-1208. [SA]. PMID: 20502291

    Janssen P, Spittal P, Gibson K, Bowen R, Petersen K. Peer support using a mobile access van promotes safety and harm reduction strategies among sex trade workers in Vancouver's Downtown Eastside. Journal of Urban Health, 2009;86:804-809. PMID: 19533367

    Janssen P, Henderson A, MacKay K. Family Violence and Maternal Mortality in the South Asian Community: The Role of Obstetrical Care Providers. Journal of the Society of Obstetrical and Gynecologists of Canada, 2009; 31:1045-1049. PMID: 20175343

    Janssen P, Saxell L, Page L, Klein M, Liston R, Lee SK. Outcomes of planned home birth with registered midwife versus planned hospital birth with midwife or physician. CMAJ, 2009;181:377-83. PMID: 19720688

    Janssen PA, Livingstone VH, Chang B, Klein MC.: Development and evaluation of a Chinese-language newborn needing hotline: a prospective cohort study. BMC Pregnancy Childbirth. 2009 Jan 29;9:3. PMID: 19178746

    Janssen P, Whitfield, M, Thiessen P, Klein M, McNab, Y. Standards for the measurement of birth weight, length and head circumference at term in neonates of European, Chinese and South Asian ancestry. Open Medicine, 2007;1:E74-88. PMID: 20101298

    Janssen P, Reime B, Ryan, E, Etches, D. Outcomes of Planned Hospital Births attended by Midwives vs. Physicians in British Columbia, BIRTH, 2007;34:140-147. PMID: 17542818

    Janssen P, Still, K, Klein M, Singer J, Liston R, Carty E, Zupancic, R. Early labour assessment and support at home vs. telephone triage. Obstetrics and Gynecology, 2006;108:1463-9. PMID: 17138781

    Janssen P, Dascal-Weichhendler H, McGregor M. Intimate Partner Violence – Where do we stand? Journal of the American Board of Family Medicine, 2006;19:413-15. PMID: 17138781

    Janssen P, Dennis C, Reime B. Development and psychometric testing of the Care in Obstetrics: a Measure FOR Testing Satisfaction (COMFORTS) Scale. Research in Nursing and Health, 2006;29:51-60. PMID: 16404734

    Janssen P, Demorest L, Whynot E. Acupuncture for substance abuse treatment in the Downtown Eastside of Vancouver, Journal of Urban Health 2005;82:285-95. PMID: 15872191

    Janssen P, Nicholls T, Ravinesh K, Stefanakis H, Spidel A, Simpson E. Of Mice and Men: Will the intersection of social science and genetics create new approaches to intimate partner violence? Journal of Interpersonal Violence 2004;20:61-71. PMID: 15618562

    Prevatt BS, Desmarais SL, Janssen PA. Lifetime substance use as a predictor of postpartum mental health. Arch Womens Ment Health. 2016 Dec 3, epub PMID:27915390 

    Honours & Awards
    • Distinguished Alumni of the Year, University of Washington, School of Public Health and Community Medicine, 2011
    • President’s Award for Public Education through Media, 2010
    • Killam Teaching Prize, 2010
    • Senior Early Career Scholar Award, Peter Wall Institute for Advanced Studies – 2007
    • Scholar, Child and Family Research Institute  2006
    • Incentive Award, Michael Smith Foundation for Health Research – 2003
    • Award of Distinction, University of British Columbia, School of Nursing – 2003
    • Award for Excellence in Nursing Research, Registered Nurses Association of BC – 2003 
    • New Investigator, Canadian Institutes of Health Research – 2002 
    • Scholar Award, Michael Smith Foundation – 2001
    Research Group Members
    • Caitlin Frame – MSc student
    • Celeste Bickford – PhD student
    • Sarah Munro – PhD student
    • Chris Laugen – PhD student
    • Angela Kaida – PhD student
    • Kristi McIntosh – PhD student
    • Dr. Gillian Hanley – Postdoctoral Fellow
    • Dr. Kathrin Stoll – Postdoctoral Fellow
    • Asheya Kassner – Optimal Birth BC Project Coordinator
    • Mo Korchinski – Unlocking the Gates Project Coordinator