Areas of Specialty
Clinical Epidemiology/Clinical Trials
Awards for Teaching
Killam Teaching Prize, UBC Faculty of Medicine, 2010
Awards for Scholarship
2012 Nominee, Society for Women’s Health Research Excellence in Women’s Health Journalism Award, Internet Category
2012 Nominee, 2012 YWCA Women of Distinction Award.
2011 Distinguished Alumni of the Year, University of Washington, School of Public Health and Community Medicine.
2011 Award of Excellence, (nominated) UBC Faculty of Medicine.
2010 President’s Award for Public Education through Media
2010 Senior Scholar Award, Child and Family Research Institute
2007 Early Career Scholar Award, Peter Wall Institute for Advanced Studies
2006 Scholar Award, Child and Family Research Institute
2003 Incentive Award, Michael Smith Foundation for Health Research
2003 Award of Distinction, University of British Columbia, School of Nursing
2003 Award for Excellence in Research, Registered Nurses Association of British Columbia
2002 New Investigator, Canadian Institute for Health Research
2001 Scholar Award, Michael Smith Foundation
Janssen P, Weissenger S. Women’s Perception of Pre-hospital Labour Duration and ObstetricalOutcomes; A Prospective Cohort Study, BMC Pregnancy and Childbirth, in press.
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 Jun 28. pii: S0002-9378(13)00704-7. doi: 10.1016/j.ajog.2013.06.042. [Epub ahead of print].
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.
Janssen P, Shroff F, Jaspar P. Massage therapy and labour outcomes: a randomized controlled trial. International Journal of Therapeutic Massage and Bodywork 2013;5:15-20.
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.
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
Janssen P, Heaman M, Urquia M, O’Campo P, Thiessen K. Risk factors for postpartum depression in abused and non-abused women. American Journal of Obstetrics and Gynecology. 2012; 207:489-8.
Hanley F, Janssen P. Ethnicity specific growth distributions for prediction of newborn morbidity. Journal of Obstetrics and Gynaecology Canada. 2012;34(9):826–829 .
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.
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;DOI:10.2105/AJPH.2012.300843.
Hayward I, Halinka Malcoe L, Cleathero L, Janssen P, Lamphear B, Hayes M, Mattman, A, Pampalon R, Venners S. Investigating maternal risk factors as potential targets of intervention to socioeconomic inequality in small for gestational age: a population-based study. BMC Public Health, 2012;12:333.
Janssen P. Risk of Stillbirth and Early Neonatal Death ranges from 1 to 4/1,000 by Planned Place of Birth in England. Evidence Based Medicine, ebmed-2012-100549. (invited commentary).
Janssen P, Desmarais S. Development and psychometric properties of the Satisfaction with early labour management questionnaire (ELSQ). Midwifery 2012 http://dx.doi.org/10.1016/j.midw.2012.05.012.
Reime B, Janssen P, Farris L, Borde T, Hellmers C, Myezwa H, Wenzlaff P. Maternal morbidity in migrant women in Germany. ACTA Obstetricia et Gynaecologica, 201291:824-9. doi: 10.1111/j.1600-0412.2012.01390.x
Janssen P, Desmarais S. Women’s experiences with early labour management at home vs. in hospital: A randomized controlled Trial. Midwifery 2012 http://dx.doi.org/10.1016/j.midw.2012.05.011.
Sword W, Heaman, M, Brooks S, Tough S, Janssen P , Young D et al. Women’s and care providers’ perspectives of quality prenatal care: A qualitative descriptive study. BMC Pregnancy and Childbirth, 2012, 12:29.
Meuleners L, Lee A, Janssen P, Fraser, M. Maternal and foetal outcomes among pregnant women hospitalized due to interpersonal violence: a population-based study in Western Australia 2000-2008. BMC Pregnancy and Childbirth, 2011;11:70; doi:10.1186/1471-2393-11-70.
Urquia M, O’Campo P, Heaman M, Janssen P, Thiessen K. Experiences of violence before and during pregnancy and adverse pregnancy outcomes: an Analysis of the Maternal Experiences Survey. BMC Pregnancy and Childbirth, 2011;11:doi:10.1186/14710-2393-11-42.
Kaida A, Laher F, Strathdee SA, Janssen PA, Money D, Hogg RS, Gray G. Childbearing intentions of HIV-positive women of reproductive age in Soweto, South Africa: The influence of expanding access to HAART in an HIV hyper-endemic setting. American Journal of Public Health, 2011;101:350-8.
Webster G, Tesche K, Janssen P. Recruitment of healthy first-trimester pregnant women: lessons from the Chemicals, Health & Pregnancy Study (CHirP), Maternal Child Health Journal, 2011; doi 10.1007/s10995-010-0739-8.
Kaida A, Laher F, Strathdee S, Money D, Janssen P, Hogg R, Gray, G. Contraceptive use and method mix patterns among HIV-positive and HIV-negative women in Soweto, South Africa: the influence of expanding access to HIV care and treatment services in an HIV hyperendemic setting. PLoS ONE 2010;5:e13868.doi:10.1371/journal.pone.0013868.
Lisonkova S, Sheps S, Janssen P, Lee S, Dahlgren L, MacNab Y. Birth outcomes among older mothers in rural versus urban areas: a residence-based approach. J Rural Health, 2010;doi10.1111/].1748-0361.2010.00332.
Lisonkova S, Sheps S, Janssen P, Lee S, Dahlgren L. Effect of older maternal age on birth outcomes in twin pregnancies: a population-based study. J Perinatol, 2010;doi10.1038/jp2010.114.
Janssen P, Klein M. Time for improved standards for studies of home birth. American Journal of Obstetrics and Gynecology, November, 2010:e11-12.
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.
Lisonkova S, Janssen P, Sheps S, Lee, S, Dahlgren. The effects of maternal age on adverse birth outcomes: does parity matter? Journal of Obstetrics and Gynecology Canada, 2010;32:541-548.
Dahlgren L, Dadelszen P, Christilaw C, Janssen P, Lisonkova S, Marquette G, Liston R. Caesarean section on maternal request: risks and benefits in healthy nulliparous women and their infants. Journal of Obstetrics and Gynecology Canada, 2009;31:808-817.
Spiby H, Green J, Janssen P. Early Labor: What’s the problem? BIRTH, 2009;36:334-341.
Szabo S, Janssen P, Khan K, Lord S. Potter P. Neovascular AMD: An overlooked risk factor for injurious falls. Osteoporosis International, 2010; 21(5):855-862.
Janssen, P, Henderson A, Vedam S. The Experience of Planned Home Birth: Views of the first five hundred. Women. BIRTH, 2009;36:297-304.
Janssen P, Spittal P, Gibson K, Bowen R, Petersen K. Sex Workers Access Peer Staffed Mobile Van for Safety, Health Promotion and Referral Services. Journal of Urban Health, 2009;86:804-809.
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.
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.
Janssen P, Livingstone V, Chang B, Klein M. Development and Evaluation of a Chinese-language Newborn Feeding Hotline: A Prospective Cohort Study. BMC Pregnancy and Childbirth, 2009, 9:doi:10.1186/1471-2393-9-3.
Donaldson M, Khan K, Janssen P. Analysis of recurrent events: A systematic review of randomised controlled trials of interventions to prevent falls. Age and Ageing. 2009:38;151-158.
Nethery, E, Janssen P. Time-activity patterns of pregnant women and changes during the course of pregnancy. Journal of Exposure Science and Environmental Epidemiology, 2009: 19;317-24.
Kaida A, Colman I, Janssen P. Recent Pap tests among Canadian women: Is depression a barrier to cervical cancer screening? Journal of Women’s Health 2008;17: advance online publication doi:10.1089;17:1175-81.
Szabo S, Janssen P, Khan K, Potter P, Lord S. Older women with age-related macular degeneration have a three-fold increased risk of falls: a physiological profile assessment (PPA) study. Journal of the American Geriatric Society 2008;56:800-7.
Babul S, Olsen L, Janssen P, McIntee P, Raina P. A randomized trial to assess the effectiveness of an infant home safety program. Journal of European Association of Injury Prevention and Safety Promotion 2007;14:109-117.
Abrahams R, Kelly A, Payne S, Thiessen P, Mackintosh J, Janssen, P. Outcomes of rooming in vs. standard care for infants of mothers using methadone or heroin. Canadian Family Physician, 2007, 53:1722-1730.
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.
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.
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.
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.
Donaldson M, Sobolev B, Kuramoto L, Cook W, Khan K, Janssen P. Utility of mean cumulative function in analysis of recurrent falls. Journals of Gerontology: Medical Sciences, 2007;62A:415-19
Broughton M, Janssen P, Hertzman C, Innis S, Frankish C. Predictors and outcomes of household food insecurity among inner city families with preschool children in Vancouver. Canadian Journal of Public Health 2005:97;214-216.
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.
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. Indexed in CSA Social Services Abstracts.
Janssen P, Nicholls T, Kumar R, 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. (Review article)
McGregor M, Ericksen J, Ronald L, Janssen P, Van Vliet A, Shulzer M. Rising incidence of hospital-reported drug-facilitated sexual assault in a large urban community in Canada. Canadian Journal of Public Health, 2004;95:441-445.
Dennis C, Janssen P, Singer J. Identifying women at risk for postpartum depression in the immediate postpartum period. Acta Psychiatrica Scandinavica 2004;110:338-346.
Janssen, P, Iker, C, Carty E. Early labour assessment and support at home: A Randomized Controlled Trial. Journal of Obstetrics and Gynecology Canada 2003;25 (9):734-741.
Janssen P, Holt V, Sugg N, Emanuel I, Critchlow C, Henderson, A. Intimate partner violence and adverse pregnancy outcomes: A population-based study. American Journal of Obstetrics & Gynecology 2003;188 (5):1341-7.
Janssen P, Selwood S, Dobson S, Peacock, D, Thiessen, P. To dye or not to dye: an RCT of a triple dye/alcohol regime vs. dry cord care. Pediatrics 2003;111(1):15-20.
Current Research Projects:
Prediction of Cesarean Birth among Healthy Women
Diagnosis and Management of Dystocia
Validation of Janssen Standards for Intrauterine Fetal Growth
Impact of Exposure to Interpersonal Violence on Pregnancy Outcomes
Management of Early Labour
Outcomes and Costs Associated with Home Birth
Addiction in Pregnancy
Norms for Electronic Fetal Monitoring at Pre-term Gestations
Factors associated with Successful Re-integration of Women into Society after Leaving Prison
Evaluation of maternity care in the Canadian Western Arctic, $60,000, Alva Foundation
Early Labour Management, $24,000, CIHR
Unlocking the Gates to Health, $99,981, CIHR
Optimal Birth BC, $371,886 CIHR
Doing Time: A Time to Develop an Action Health Plan, $372,069 CIHR
Maternal Socioeconomic Status, Prenatal Mental Health and Psychotropic Medication Use, $100,000 CIHR
A Pilot Study of a Composite Fetal Health Assessment Strategy, $14,961, Nelly Auersperg