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Dr Sian Harrison ClinPsyD. BSc.

Social Scientist


Sian completed her PhD in Clinical Psychology in 2002 and previously worked as a Clinical Health Psychologist with patients and families affected by cancer.

Sian began working at the University of Oxford in 2009, initially for the Nuffield Department of Primary Care Health Sciences, where she coordinated two large surveys in the areas of cancer care and cardiovascular disease. Sian was involved in the development of WHO guidelines for self-care in non-communicable disease. She also co-ordinated the OxWATCH study, which was a cohort feasibility study to explore the impact of pregnancy on women's health and wellbeing.

Sian joined the National Perinatal Epidemiology Unit (NPEU) within the Nuffield Department of Population Health in 2016. She is part of the NIHR Policy Research Unit in Maternal and Neonatal Health and Care (PRU-MNHC). Sian is currently working on the National Maternity Surveys, which are large population-based surveys of maternal and infant health, carried out at regular intervals by the NPEU. Sian's research interests are in the field of perinatal mental health.


Opondo C, Harrison S, Sanders J, Quigley MA, Alderdice F. (2023). The relationship between perineal trauma and postpartum psychological outcomes: a secondary analysis of a population-based survey. BMC Pregnancy Childbirth, 23(1):639.

Harrison S, Quigley MA, Fellmeth G, Stein A, Alderdice F. (2023). The impact of the Covid-19 pandemic on postnatal depression: analysis of three population-based national maternity surveys in England (2014–2020).Lancet Reg Health Eur, 15;30:100654.

Gong J, Fellmeth G, Quigley MA, Gale C, Stein A, Alderdice F, Harrison S. (2023). Prevalence and risk factors for postnatal mental health problems in mothers of infants admitted to neonatal care: analysis of two population-based surveys in England. BMC Pregnancy Childbirth, 23:370.

Harrison S, Pilkington V, Li Y, Quigley MA, Alderdice F. (2023). Disparities in who is asked about their perinatal mental health: an analysis of cross-sectional data from consecutive national maternity surveys. BMC Pregnancy Childbirth, 23(1):263.

Harrison S, Alderdice F, Quigley MA. (2023). Impact of sampling and data collection methods on maternity survey response: a randomised controlled trial of paper and push-to-web surveys and a concurrent social media survey. BMC Med Res Methodol, 23(1):10.

Fellmeth G, Harrison S, Quigley MA, Alderdice F. (2022). A Comparison of Three Measures to Identify Postnatal Anxiety: Analysis of the 2020 National Maternity Survey in England. Int J Environ Res Public Health, 19(11):6578.

McLeish J, Harrison S, Quigley M, Alderdice F. (2022). Learning from a crisis: a qualitative study of the impact on mothers' emotional wellbeing of changes to maternity care during the COVID-19 pandemic in England, using the National Maternity Survey 2020. BMC Pregnancy Childbirth, 22(1):868.

Malouf R, Harrison S, Burton HAL, Gale C, Stein A, Franck LS, Alderdice F. (2022). Prevalence of anxiety and post-traumatic stress (PTS) among the parents of babies admitted to neonatal units: A systematic review and meta-analysis. EClinicalMedicine, 43:101233.0.1186/s12884-022-05208-7. PMID: 36419009; PMCID: PMC9684911.

Harrison S, Alderdice F, McLeish J, Quigley MA. (2021). You and Your Baby: A national survey of health and care during the 2020 Covid-19 pandemic. Oxford: National Perinatal Epidemiology Unit, University of Oxford, 2021. ISBN: 978-1-8383678-4-8

Fellmeth G, Harrison S, Opondo C, Nair M, Kurinczuk J, Alderdice F. (2021). Validated screening tools to identify common mental disorders in perinatal and postpartum women in India: a systematic review and meta-analysis. BMC Psychiatry 21, 200.

Opondo C, Harrison S, Alderdice F, Carson C, Quigley MA. Electronic cigarette use (vaping) and patterns of tobacco cigarette smoking in pregnancy-evidence from a population-based maternity survey in England. (2021). PLoS One. 6(6):e0252817.

Harrison S, Alderdice F. (2020). Challenges of defining and measuring perinatal anxiety. Journal of Reproductive and Infant Psychology, 38(1),1-2.

Harrison SE, Ayers S, Quigley MA, Stein A, Alderdice F. (2020). Prevalence and factors associated with postpartum posttraumatic stress in a population-based maternity survey in England. Journal of Affective Disorders, 16:S0165-0327(20)33035-4.

Harrison S, Alderdice F, Quigley MA. (2020). External validity of prevalence estimates from the national maternity surveys in England: The impact of response rate. PLoS ONE, 15(11): e0242815.

Harrison S, Alderdice F, Henderson J, Quigley MA. (2020). You and Your Baby: A national survey of health and care. Oxford: National Perinatal Epidemiology Unit, University of Oxford, 2020. ISBN: 978-0-9956854-5-1.

Harrison S, Alderdice F, Henderson J, Redshaw M, Quigley MA. (2020). Trends in response rates and respondent characteristics in five National Maternity Surveys in England during 1995-2018. Archives of Public Health, 78(46).

Harrison S, Henderson J, Alderdice F, Quigley MA. (2019). Methods to increase response rates in a population-based maternity survey: comparison of two pilot studies. BMC Medical Research Methodology, 19(65).

Redshaw M, Martin CR, Savage-McGlynn E, Harrison S. (2019). Women's experiences of maternity care in England: preliminary development of a standard measure. BMC Pregnancy and Childbirth, 19(167).

Hodkinson P, Argent A, Wallis L, Reid S, Perera R, Harrison S, Thompson M, English M, Maconochie I, Ward A. (2016). Pathways to Care for Critically Ill or Injured Children: A Cohort Study from First Presentation to Healthcare Services through to Admission to Intensive Care or Death. PLoS One, 5:11(1).

Jones CH, Ward A, Hodkinson PW, Reid SJ, Wallis LA, Harrison S, Argent AC. (2016). Caregivers' Experiences of Pathways to Care for Seriously Ill Children in Cape Town, South Africa: A Qualitative Investigation. PLoS One, 11(3).

Harrison S, Petrovic G, Chevassut A, Brook L, Higgins N, Kenworthy Y, Selwood M, Snelgar T, Arnold L, Boardman H, Heneghan C, Leeson P, Redman C, Granne I. (2015). Oxfordshire Women and Their Children's Health (OxWATCH): protocol for a prospective cohort feasibility study. BMJ Open, 5(11).

Tompson A, Heneghan C, Fitzmaurice D, Sutton S, Harrison S, Ward A. (2015). Supporting patients to self-monitor their oral anticoagulation therapy: recommendations based on a qualitative study of patients' experiences. Br J Gen Pract, 65:e438 - e446.

McFarland L, Murray E, Harrison S, Heneghan C, Ward A, Fitzmaurice D, Greenfield S. (2014). Current practice of venous thromboembolism prevention in acute trusts: a qualitative study. BMJ Open, 4(6).

McFarland L, Ward A, Greenfield S, Murray E, Heneghan C, Harrison S, Fitzmaurice D. (2013). ExPeKT- Exploring prevention and knowledge of venous thromboembolism: a two-stage, mixed-method study protocol. BMJ Open, 3(4).

Heneghan C, Blacklock C, Perera R, Davis R, Banerjee A, Gill P, Liew S, Chamas L, Hernandez J, Mahtani K, Hayward G, Harrison S, Lasserson D, Mickan S, Sellers C, Carnes D, Homer K, Steed L, Ross J, Denny N, Goyder C, Thompson M, Ward A. (2013). Evidence for non-communicable diseases: analysis of Cochrane reviews and randomised trials by World Bank classification. BMJ Open, 6;3(7)

Moscrop A, Harrison S, Heppell V, Heneghan C, Ward A. (2013). Primary care follow-up and measured mental health outcomes among women referred for ultrasound assessment of pain and/or bleeding in early pregnancy: a quantitative questionnaire study. BMJ Open, 3(4).

Turner D, Adams E, Boulton M, Harrison S, Khan NF, Rose PW, Ward AM, Watson EK. (2013). Partners and close family members of long-term cancer survivors: health status, psychosocial well-being and unmet supportive care needs. Psycho-Oncology, 22:12-19.

Harrison SE, Watson EK, Ward A, Khan NF, Turner D, Adams E, Forman D, Roche M, Rose P. (2012). Cancer survivors' experiences of discharge from hospital follow-up. European Journal of Cancer Care, 21:390-397.

Khan NF, Harrison S, Rose PW, Ward A, Evans J. (2012). Interpretation and acceptance of the term 'cancer survivor': a United Kingdom-based qualitative study. European Journal of Cancer Care, 21:177-186.

Mahtani KR, Heneghan CJ, Nunan D, Bankhead C, Keeling D, Ward AM, Harrison SE, Roberts NW, Hobbs FD, Perera R. (2012). Optimal loading dose of warfarin for the initiation of oral anticoagulation. Cochrane Database Syst Rev 12.

Stevens RJ, Ali R, Bankhead CR, Bethel MA, Cairns BJ, Camisasca RP, Crowe FL, Farmer AJ, Harrison S, Hirst JA, Home P, Kahn SE, McLellan JH, Perera R, Plüddemann A, Ramachandran A, Roberts NW, Rose PW, Schweizer A, Viberti G, Holman RR. (2012). Cancer outcomes and all-cause mortality in adults allocated to metformin: Systematic review and collaborative meta-analysis of randomised clinical trials, 55:2593-2603.

Harrison SE, Watson EK, Ward A, Khan NF, Turner D, Adams E, Forman D, Roche M, Rose P. (2011). The primary health and supportive care needs of long-term cancer survivors. Journal of Clinical Oncology, 29:2091-2098.

Khan NF, Harrison SE, Rose PW. (2010). Validity of diagnostic coding within the General Practice Research Database: A systematic review. The British Journal of General Practice, 60:199-206.

Sharp D, Bateman J, Braid F, Frizelle D, Harrison S, Hebblewhite C, Hope T, Lines M, Walker M, Walker L. (2007). Does integration of support services enhance equity of use? Psycho Oncology, 16(9):S230.