Overview

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.

Publications

2009 IOM guidelines for gestational weight gain: how well do they predict outcomes across ethnic groups?
Ethnicity & Health
Amal R. Khanolkar and Gillian E. Hanley and Ilona Koupil and Patricia A. Janssen
DOI: 10.1080/13557858.2017.1398312
11/2017

Does Molimina Indicate Ovulation?
Canadian Journal of Diabetes
Azita Goshtasebi and Shirin Kalyan and Chiaki Konishi and Christine Hitchcock and Anthony Cheung and Patricia Janssen and Nichole Fairbrother and Jerilynn Prior
DOI: 10.1016/j.jcjd.2017.08.111
10/2017

A systematic review of nonpharmacological prenatal interventions for pregnancy-specific anxiety and fear of childbirth
Birth
Kathrin Stoll and Emma Marie Swift and Nichole Fairbrother and Elizabeth Nethery and Patricia Janssen
DOI: 10.1111/birt.12316
10/2017

SmartMom Text Messaging for Prenatal Education: A Qualitative Focus Group Study to Explore Canadian Women’s Perceptions
JMIR Public Health and Surveillance
Sarah Munro and Amber Hui and Vanessa Salmons and Carolyn Solomon and Emily Gemmell and Nahal Torabi and Patricia A Janssen
DOI: 10.2196/publichealth.6949
02/2017

Evaluation of a Patient Education Pamphlet for Women Considering Vaginal Birth After Cesarean
The Journal of Perinatal Education
Sarah Munro and Kathryn Dewar and Elizabeth Wilcox and Michael C. Klein and Patricia A. Janssen
DOI: 10.1891/1058-1243.26.1.37
01/2017

A Predictive Model for Cesarean Among Low-Risk Nulliparous Women in Spontaneous Labor at Hospital Admission
Birth
Patricia A. Janssen and Jozette J. C. Stienen and Rollin Brant and Gillian E. Hanley
DOI: 10.1111/birt.12257
10/2016

Perinatal anxiety disorder prevalence and incidence
Journal of Affective Disorders
Nichole Fairbrother and Patricia Janssen and Martin M. Antony and Emma Tucker and Allan H. Young
DOI: 10.1016/j.jad.2015.12.082
08/2016

Methodological Challenges in a Manitoba Study of Provider Type and Perinatal Outcomes Using Hospital Discharge Data
Birth
Daphne McRae and Kathrin Stoll and Patricia Janssen
DOI: 10.1111/birt.12243
08/2016

Social Support and Exclusive Breast feeding among Canadian Women
Paediatric and Perinatal Epidemiology
Chris M. Laugen and Nazrul Islam and Patricia A. Janssen
DOI: 10.1111/ppe.12303
06/2016

Prenatal supplementation with Corn Soya Blend Plus reduces the risk of maternal anemia in late gestation and lowers the rate of preterm birth but does not significantly improve maternal weight gain and birth anthropometric measurements in rural Cambodian women: a randomized trial1
The American Journal of Clinical Nutrition
Amynah Janmohamed and Crystal D Karakochuk and Somchit Boungnasiri and Gwen E Chapman and Patricia A Janssen and Rollin Brant and Timothy J Green and Judy McLean
DOI: 10.3945/ajcn.114.104034
02/2016

Lifetime substance use as a predictor of postpartum mental health
Archives of Women's Mental Health
Betty-Shannon Prevatt and Sarah L. Desmarais and Patricia A. Janssen
DOI: 10.1007/s00737-016-0694-5
2016

Depression and anxiety during the perinatal period
BMC Psychiatry
Nichole Fairbrother and Allan H. Young and Patricia Janssen and Martin M. Antony and Emma Tucker
DOI: 10.1186/s12888-015-0526-6
08/2015

Costs of Planned Home vs. Hospital Birth in British Columbia Attended by Registered Midwives and Physicians
PLOS ONE
Patricia A. Janssen and Craig Mitton and Jaafar Aghajanian
DOI: 10.1371/journal.pone.0133524
07/2015

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
CMAJ Open
C. D. Bickford and P. A. Janssen
DOI: 10.9778/cmajo.20140055
04/2015

Newborn Outcomes in British Columbia After Caesarean Section for Non-Reassuring Fetal Status
Journal of Obstetrics and Gynaecology Canada
Kevin Jenniskens and Patricia A. Janssen
DOI: 10.1016/s1701-2163(15)30306-6
03/2015

A balancing act in an unknown territory: A metasynthesis of first-time mothers¿ experiences in early labour
Midwifery
Tine S. Eri and Terese Bondas and Mechthild M. Gross and Patricia Janssen and Josephine M. Green
DOI: 10.1016/j.midw.2014.11.007
03/2015

Home birth study fails to identify credentials of midwives conducting home birth
American Journal of Obstetrics and Gynecology
Karine Vallee-Pouliot and Patricia Janssen and Eileen Hutton
DOI: 10.1016/j.ajog.2014.10.028
02/2015

Quality of prenatal care questionnaire: instrument development and testing
BMC Pregnancy and Childbirth
Maureen I Heaman and Wendy A Sword and Noori Akhtar-Danesh and Amanda Bradford and Suzanne Tough and Patricia A Janssen and David C Young and Dawn A Kingston and Eileen K Hutton and Michael E Helewa
DOI: 10.1186/1471-2393-14-188
06/2014

Women’s perception of pre-hospital labour duration and obstetrical outcomes; a prospective cohort study
BMC Pregnancy and Childbirth
Patricia A Janssen and Sandra Weissinger
DOI: 10.1186/1471-2393-14-182
05/2014

Intimate partner abuse before and during pregnancy as risk factors for postpartum mental health problems
BMC Pregnancy and Childbirth
Sarah L Desmarais and Ashley Pritchard and Evan M Lowder and Patricia A Janssen
DOI: 10.1186/1471-2393-14-132
04/2014

Why are young Canadians afraid of birth? A survey study of childbirth fear and birth preferences among Canadian University students
Midwifery
Kathrin Stoll and Wendy Hall and Patricia Janssen and Elaine Carty
DOI: 10.1016/j.midw.2013.07.017
02/2014

Ethnicity-specific birthweight distributions improve identification of term newborns at risk for short-term morbidity
American Journal of Obstetrics and Gynecology
Gillian E. Hanley and Patricia A. Janssen
DOI: 10.1016/j.ajog.2013.06.042
11/2013

Development and psychometric properties of the Early Labour Experience Questionnaire (ELEQ)
Midwifery
Patricia A. Janssen and Sarah L. Desmarais
DOI: 10.1016/j.midw.2012.05.012
03/2013

Women's experience with early labour management at home vs. in hospital: A randomised controlled trial
Midwifery
Patricia A. Janssen and Sarah L. Desmarais
DOI: 10.1016/j.midw.2012.05.011
03/2013

Prevalence of Abuse and Violence Before, During, and After Pregnancy in a National Sample of Canadian Women
American Journal of Public Health
Nihaya Daoud and Marcelo L. Urquia and Patricia O'Campo and Maureen Heaman and Patricia A. Janssen and Janet Smylie and Kellie Thiessen
DOI: 10.2105/ajph.2012.300843
10/2012

Ethnicity-Specific Growth Distributions for Prediction of Newborn Morbidity
Journal of Obstetrics and Gynaecology Canada
Gillian E. Hanley and Patricia A. Janssen
DOI: 10.1016/s1701-2163(16)35380-4
09/2012

Effect of a collaborative interdisciplinary maternity care program on perinatal outcomes
Canadian Medical Association Journal
S. J. Harris and P. A. Janssen and L. Saxell and E. A. Carty and G. S. MacRae and K. L. Petersen
DOI: 10.1503/cmaj.111753
09/2012

For women with term low-risk pregnancies, risk of perinatal mortality and intrapartum morbidity similar across planned places of birth
Evidence Based Medicine
Patricia A Janssen
DOI: 10.1136/ebmed-2012-100549
04/2012

Fetal oxygenation measurement using wireless near infrared spectroscopy
Optical Diagnostics and Sensing XII: Toward Point-of-Care Diagnostics; and Design and Performance Validation of Phantoms Used in Conjunction with Optical Measurement of Tissue IV
Andrew Macnab and Babak Shadgan and Patricia Janssen and Dan Rurak
DOI: 10.1117/12.906243
02/2012

Massage Therapy and Labor Outcomes: a Randomized Controlled Trial
International Journal of Therapeutic Massage & Bodywork: Research, Education, & Practice
Patricia Janssen and PhD and Farah Shroff and PhD and Paula Jaspar and RMT
DOI: 10.3822/ijtmb.v5i4.164
2012

Auricular acupuncture for chemically dependent pregnant women: a randomized controlled trial of the NADA protocol
Substance Abuse Treatment, Prevention, and Policy
Patricia A Janssen and Louise C Demorest and Anne Kelly and Paul Thiessen and Ron Abrahams
DOI: 10.1186/1747-597x-7-48
2012

Prediction of Repeat Visits by Victims of Intimate Partner Violence to a Level III Trauma Centre
ISRN Emergency Medicine
Patricia Janssen and Kathleen Mackay
DOI: 10.5402/2012/484681
2012

Risk factors for postpartum depression among abused and nonabused women
American Journal of Obstetrics and Gynecology
Patricia A. Janssen and Maureen I. Heaman and Marcelo L. Urquia and Patricia J. O'Campo and Kellie R. Thiessen
DOI: 10.1016/j.ajog.2012.09.022
2012

Interventions for preventing or reducing domestic violence against pregnant women
Cochrane Database of Systematic Reviews
Shayesteh Jahanfar and Patricia A Janssen and Louise Howard
DOI: 10.1002/14651858.cd009414
11/2011

Experiences of violence before and during pregnancy and adverse pregnancy outcomes: An analysis of the Canadian Maternity Experiences Survey
BMC Pregnancy and Childbirth
Marcelo L Urquia and Patricia J O'Campo and Maureen I Heaman and Patricia A Janssen and Kellie R Thiessen
DOI: 10.1186/1471-2393-11-42
06/2011

Time for improved standards for studies of home birth
American Journal of Obstetrics and Gynecology
Patricia Alice Janssen and Michael C. Klein
DOI: 10.1016/j.ajog.2010.04.042
11/2010

The Effect of Maternal Age on Adverse Birth Outcomes: Does Parity Matter?
Journal of Obstetrics and Gynaecology Canada
Sarka Lisonkova and Patricia A. Janssen and Sam B. Sheps and Shoo K. Lee and Leanne Dahlgren
DOI: 10.1016/s1701-2163(16)34522-4
06/2010

Regional Variation in the Cesarean Delivery and Assisted Vaginal Delivery Rates
Obstetrics & Gynecology
Gillian E. Hanley and Patricia A. Janssen and Devon Greyson
DOI: 10.1097/aog.0b013e3181dd918c
06/2010

Family Violence and Maternal Mortality in the South Asian Community: The Role of Obstetrical Care Providers
Journal of Obstetrics and Gynaecology Canada
Patricia A. Janssen and Angela D. Henderson and Kathleen L. MacKay
DOI: 10.1016/s1701-2163(16)34349-3
11/2009

Outcomes of planned home birth with registered midwife versus planned hospital birth with midwife or physician
Canadian Medical Association Journal
P. A. Janssen and L. Saxell and L. A. Page and M. C. Klein and R. M. Liston and S. K. Lee
DOI: 10.1503/cmaj.081869
08/2009

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
Patricia A. Janssen and Kate Gibson and Raven Bowen and Patricia M. Spittal and Karen L. Petersen
DOI: 10.1007/s11524-009-9376-1
06/2009

Development and evaluation of a Chinese-language newborn feeding hotline: A prospective cohort study
BMC Pregnancy and Childbirth
Patricia A Janssen and Verity H Livingstone and Bruce Chang and Michael C Klein
DOI: 10.1186/1471-2393-9-3
01/2009

The Experience of Planned Home Birth: Views of the First 500 Women
Birth
Patricia A. Janssen and Angela D. Henderson and Saraswathi Vedam
DOI: 10.1111/j.1523-536x.2009.00357.x
2009

Roundtable Discussion: Early Labor: What's the Problem?
Birth
Patricia Janssen and Mary L. Nolan and Helen Spiby and Josephine Green and Mechthild M. Gross and Helen Cheyne and Vanora Hundley and Marlies Rijnders and Ank de Jonge and Simone Buitendijk
DOI: 10.1111/j.1523-536x.2009.00361.x
2009

Outcomes of Planned Hospital Birth Attended by Midwives Compared with Physicians in British Columbia
Obstetrical & Gynecological Survey
Patricia A. Janssen and Elizabeth M. Ryan and Duncan J. Etches and Michael C. Klein and Birgit Reime
DOI: 10.1097/01.ogx.0000286561.96746.91
11/2007

Outcomes of Planned Hospital Birth Attended by Midwives Compared with Physicians in British Columbia
Birth
Patricia A. Janssen and Elizabeth M. Ryan and Duncan J. Etches and Michael C. Klein and Birgit Reime
DOI: 10.1111/j.1523-536x.2007.00160.x
06/2007

Early Labor Assessment and Support at Home Versus Telephone Triage: A Randomized Controlled Trial
Obstetrical & Gynecological Survey
Patricia A. Janssen and Douglas K. Still and Michael C. Klein and Joel Singer and Elaine A. Carty and Robert M. Liston and John A. Zupancic
DOI: 10.1097/01.ogx.0000261666.06536.30
05/2007

Bone strength and its determinants in pre- and early pubertal boys and girls
Bone
Heather Macdonald and Saija Kontulainen and Moira Petit and Patricia Janssen and Heather McKay
DOI: 10.1016/j.bone.2006.02.057
09/2006

Satisfaction With Planned Place of Birth Among Midwifery Clients in British Columbia
Journal of Midwifery & Women's Health
P JANSSEN and E CARTY and B REIME
DOI: 10.1016/j.jmwh.2005.10.012
03/2006

Early Labor Assessment and Support at Home Versus Telephone Triage
Obstetrics & Gynecology
Patricia A. Janssen and Douglas K. Still and Michael C. Klein and Joel Singer and Elaine A. Carty and Robert M. Liston and John A. Zupancic
DOI: 10.1097/01.aog.0000247644.64154.bb
2006

Development and psychometric testing of the care in obstetrics: Measure for testing satisfaction (COMFORTS) scale
Research in Nursing & Health
Patricia A. Janssen and Cindy-Lee Dennis and Birgit Reime
DOI: 10.1002/nur.20112
2006

Acupuncture for Substance Abuse Treatment in the Dowtown Eastside of Vancouver
Journal of Urban Health: Bulletin of the New York Academy of Medicine
P. A. Janssen
DOI: 10.1093/jurban/jti054
05/2005

Of Mice and Men
Journal of Interpersonal Violence
Patricia A. Janssen and Tonia L. Nicholls and Ravinesh A. Kumar and Harry Stefanakis and Alicia L. Spidel and Elizabeth M. Simpson
DOI: 10.1177/0886260504268120
01/2005

Outcomes of Planned Hospital Birth Attended by Midwives vs Physicians in British Columbia
Journal of Midwifery & Women's Health
Patricia A. Janssen and Birgit Reime and Elizabeth R. Ryan and Duncan J. Etches
DOI: 10.1111/j.1542-2011.2004.tb04449.x
09/2004

Ethnic Chinese women's perceptions about condoms, withdrawal and rhythm methods of birth control
Contraception
Ellen R. Wiebe and Patricia A. Janssen and Angela Henderson and Iris Fung
DOI: 10.1016/j.contraception.2004.01.006
06/2004

Assessing for Domestic Violence Exposure in Primary Care Settings
Journal of Interpersonal Violence
Patricia A. Janssen and Monica A. Landolt and Anton F. Grunfeld
DOI: 10.1177/0886260503251133
06/2003

Assessing for Domestic Violence Exposure in Primary Care Settings: The Transition from Classroom to Clinical Practice
Journal of Interpersonal Violence
PATRICIA A. JANSSEN and MONICA A. LANDOLT and ANTON F. GRUNFELD
DOI: 10.1177/0886260503018006003
06/2003

An evaluation of process and protocols for planned home birth attended by regulated midwives in British Columbia
Journal of Midwifery & Women's Health
Patricia A. Janssen and Shoo K. Lee and Elizabeth R. Ryan and Lee Saxell
DOI: 10.1016/s1526-9523(02)00418-x
03/2003

Universal screening for domestic violence in abortion
Women's Health Issues
Ellen R Wiebe and Patricia Janssen
DOI: 10.1016/s1049-3867(01)00074-3
09/2001

Single Room Maternity Care: The Nursing Response
Birth
Patricia A. Janssen and Susan J. Harris and Jetty Soolsma and Michael C. Klein and Laurie C. Seymour
DOI: 10.1046/j.1523-536x.2001.00173.x
09/2001

Domestic Violence Education
Academic Medicine
Daniel E. Roth and Patricia A. Janssen and Monica A. Landolt and Anton F. Grunfeld
DOI: 10.1097/00001888-200101000-00004
01/2001

Time lost from work among women choosing medical or surgical abortions
Women's Health Issues
Ellen R Wiebe and Patricia Janssen
DOI: 10.1016/s1049-3867(00)00061-x
11/2000

silicone breast implants
AWHONN Lifelines
Barbara Arthur and Patricia A. Janssen
DOI: 10.1111/j.1552-6356.2000.tb01205.x
10/2000

Single Room Maternity Care and Client Satisfaction
Birth
Patricia A Janssen and Michael C Klein and Susan J Harris and Jetty Soolsma and Laurie C Seymour
DOI: 10.1046/j.1523-536x.2000.00235.x
2000

Vaginal sonography and gender preference for sonographer
Journal of Clinical Ultrasound
Pamela O'Sullivan and Patricia Janssen and R. Douglas Wilson and Dorothy Shaw
DOI: 10.1002/(sici)1097-0096(199901)27:13.0.co;2-v
01/1999

The prevalence of domestic violence among obstetric nurses
Women's Health Issues
Patricia A. Janssen and Melanie C. Basso and Roberta M. Costanzo
DOI: 10.1016/s1049-3867(98)00023-1
09/1998

Factors Influencing Perineal Trauma during Delivery
Journal SOGC
Michael C. Klein and Patricia A. Janssen
DOI: 10.1016/s0849-5831(98)80006-2
02/1998

Authors' Reply
Paediatric and Perinatal Epidemiology
PATRICIA A. JANSSEN and STEPHEN M. SCHWARTZ
DOI: 10.1111/j.1365-3016.1996.tb00075.x
10/1996

Research

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.

Honours & Awards

Killam Teaching Prize, 2010

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

Research Group Members

Amylie Janssen, Undergraduate Student
Linnea Ladfors, Graduate student
Jihane Lamkaraf, Undergraduate Student
Warren Michelow
Elizabeth Nethery, Midwife, Researcher, PhD Student
Kathrin Stoll, Research Associate