2024

• Randall, D., Ibiebele, I., Nippita, T., Torvaldsen, S., Morris, J., Gallimore, F., Weir, T., Glastras, S. (2024). StUdy of Gestational diabetes And Risk using Electronic Data (SUGARED): a population-based cohort study—study protocol. BMJ Open, 14(12). [More Information]

2023

• Baldwin, H., Randall, D., Maher, R., West, S., Torvaldsen, S., Morris, J., Patterson, J. (2023). Interventional radiology in obstetric patients: A population-based record linkage study of use and outcomes. Acta Obstetricia et Gynecologica Scandinavica, 102(3), 370-377. [More Information]
• Anwar, J., Torvaldsen, S., Morrell, S., Taylor, R. (2023). Maternal Mortality in a Rural District of Pakistan and Contributing Factors. Maternal and Child Health Journal, 27(5), 902-915. [More Information]
• Parry, M., Torvaldsen, S., Nippita, T., Bowen, J., Morris, J., Ibiebele, I. (2023). Trends in early gestation stillbirths and neonatal deaths in New South Wales, Australia 2002–2019. Australian and New Zealand Journal of Obstetrics and Gynaecology. [More Information]

2022

• Hennessy, D., Torvaldsen, S., Bentley, J., Bowen, J., Moore, H., Roberts, C. (2022). Alternatives to low birthweight as a population-level indicator of infant and child health. Public Health Research and Practice, 32(1). [More Information]
• Ibiebele, I., Nippita, T., Baber, R., Torvaldsen, S. (2022). Pregnancy outcomes in women with endometriosis and/or ART use: a population-based cohort study. Human Reproduction, 37(10), 2350-2358. [More Information]

2021

• Ibiebele, I., Nippita, T., Baber, R., Torvaldsen, S. (2021). A study of pregnancy after endometrial ablation using linked population data. Acta Obstetricia et Gynecologica Scandinavica, 100(2), 286-293. [More Information]
• Patterson, J., Cashmore, A., Ioannides, S., Milat, A., Nippita, T., Morris, J., Torvaldsen, S. (2021). Benefits of not smoking during pregnancy for non-Aboriginal women and their babies in New South Wales, Australia: a record linkage study. International Journal of Population Data Science, 6(3), 2. [More Information]
• Owen, K., Ibiebele, I., Simpson, J., Morton, R., Morris, J., Torvaldsen, S. (2021). Comparison of costs related to infant hospitalisations for spontaneous, induced and Caesarean births: population-based cohort study. Australian Health Review, 45(4), 418-424. [More Information]
• Sparrow, E., Wood, J., Chadwick, C., Newall, A., Torvaldsen, S., Moen, A., Torelli, G. (2021). Global production capacity of seasonal and pandemic influenza vaccines in 2019. Vaccine, 39(3), 512-520. [More Information]
• Gugusheff, J., Patterson, J., Torvaldsen, S., Ibiebele, I., Nippita, T. (2021). Is mode of first birth a risk factor for subsequent preterm birth? Australian and New Zealand Journal of Obstetrics and Gynaecology, 61(1), 86-93. [More Information]
• Patterson, J., Randall, D., Isbister, J., Peek, M., Nippita, T., Torvaldsen, S. (2021). Place of birth and outcomes associated with large volume transfusion: an observational study. BMC Pregnancy and Childbirth, 21(1), 620. [More Information]
• Austin, K., Seeho, S., Ibiebele, I., Ford, J., Morris, J., Torvaldsen, S. (2021). Pregnancy outcomes for women with a history of stroke: A population-based record linkage study. Australian and New Zealand Journal of Obstetrics and Gynaecology, 61(2), 239-243. [More Information]
• Berman, Y., Ibiebele, I., Randall, D., Torvaldsen, S., Nippita, T., Bowen, J., Baldwin, H., Todd, S., Morris, J., Ford, J., Patterson, J. (2021). Rates of neonatal morbidity by maternal region of birth and gestational age in New South Wales, Australia 2003-2016. Acta Obstetricia et Gynecologica Scandinavica, 100(2), 331-338. [More Information]
• Baldwin, H., Nippita, T., Rickard, K., Torvaldsen, S., McGee, T., Patterson, J. (2021). Reporting of gestational diabetes and other maternal medical conditions: Validation of routinely collected hospital data from New South Wales, Australia. International Journal of Population Data Science, 6(1), 1381. [More Information]
• Baldwin, H., Nippita, T., Torvaldsen, S., McGee, T., Rickard, K., Patterson, J. (2021). Validation of anaemia, haemorrhage and blood disorder reporting in hospital data in New South Wales, Australia. BMC Research Notes, 14(1), 167. [More Information]

2020

• Todd, S., Bowen, J., Ibiebele, I., Patterson, J., Torvaldsen, S., Ford, J., Nippita, T., Morris, J., Randall, D. (2020). A composite neonatal adverse outcome indicator using population-based data: an update. International Journal of Population Data Science, 5(1), 1-14. [More Information]
• McInerney, C., Ibiebele, I., Torvaldsen, S., Ford, J., Morris, J., Nelson, M., Randall, D. (2020). Defining a study population using enhanced reporting of Aboriginality and the effects on study outcomes. International Journal of Population Data Science, 5(1), 15. [More Information]
• Patterson, J., Torvaldsen, S., Nippita, T., Ford, J., Morris, J. (2020). Determining a strategy to reduce smoking in pregnancy. Australian and New Zealand Journal of Obstetrics and Gynaecology, 60(6), 935-941. [More Information]
• Ibiebele, I., Humphries, J., Torvaldsen, S., Ford, J., Morris, J., Bowen, J., Randall, D. (2020). Gestational age, morbidity and mortality among twin births in New South Wales, Australia 2003-2014: A cohort study. Australian and New Zealand Journal of Obstetrics and Gynaecology, 60(4), 541-547. [More Information]
• Baldwin, H., Nippita, T., Torvaldsen, S., Ibiebele, I., Ford, J., Patterson, J. (2020). Outcomes of Subsequent Births After Placenta Accreta Spectrum. Obstetrics and Gynecology, 136(4), 745-755. [More Information]
• Ibiebele, I., Gallimore, F., Schnitzler, M., Torvaldsen, S., Ford, J. (2020). Perinatal outcomes following bariatric surgery between a first and second pregnancy: a population data linkage study. BJOG, 127(3), 345-354. [More Information]
• Berman, Y., Ibiebele, I., Patterson, J., Randall, D., Ford, J., Nippita, T., Morris, J., Davies-Tuck, M., Torvaldsen, S. (2020). Rates of stillbirth by maternal region of birth and gestational age in New South Wales, Australia 2004–2015. Australian and New Zealand Journal of Obstetrics and Gynaecology, 60(3), 425-432. [More Information]

2019

• McInerney, C., Ibiebele, I., Ford, J., Randall, D., Morris, J., Meharg, D., Mitchell, J., Milat, A., Torvaldsen, S. (2019). Benefits of not smoking during pregnancy for Australian Aboriginal and Torres Strait Islander women and their babies: A retrospective cohort study using linked data. BMJ Open, 9(11), 1-11. [More Information]
• Pont, S., Austin, K., Ibiebele, I., Torvaldsen, S., Patterson, J., Ford, J. (2019). Blood transfusion following intended vaginal birth after cesarean versus elective repeat cesarean section in women with a prior primary cesarean: A population-based record linkage study. Acta Obstetricia et Gynecologica Scandinavica, 98(3), 382-389. [More Information]
• Sparrow, E., Torvaldsen, S., Newall, A., Wood, J., Sheikh, M., Kieny, M., Abela-Ridder, B. (2019). Recent advances in the development of monoclonal antibodies for rabies post exposure prophylaxis: A review of the current status of the clinical development pipeline. Vaccine, 37(Suppl 1), A132-A139. [More Information]
• Ibiebele, I., Torvaldsen, S., Patterson, J., Ford, J., Pont, S., Austin, K. (2019). Response to 'Postpartum hemorrhage and blood transfusion among parturients with scarred uterus - the evidence is there'. Acta Obstetricia et Gynecologica Scandinavica, 98(4), 536-537. [More Information]

2018

• Baldwin, H., Patterson, J., Nippita, T., Torvaldsen, S., Ibiebele, I., Simpson, J., Ford, J. (2018). Antecedents of Abnormally Invasive Placenta in Primiparous Women: Risk Associated With Gynecologic Procedures. Obstetrics and Gynecology, 131(2), 227-233. [More Information]
• Anwar, J., Torvaldsen, S., Sheikh, M., Taylor, R. (2018). Completeness of a Maternal and Perinatal Mortality Enhanced Surveillance System in Pakistan: Evidence from Capture–Recapture Methods. Maternal and Child Health Journal, 22, 1743-1750. [More Information]
• Gillies, M., Bowen, J., Patterson, J., Roberts, C., Torvaldsen, S. (2018). Educational outcomes for children with cerebral palsy: a linked data cohort study. Developmental Medicine and Child Neurology, 60(4), 397-401. [More Information]
• Crawford, B., Byun, R., Mitchell, E., Thompson, S., Jalaludin, B., Torvaldsen, S. (2018). Seeking fresh food and supporting local producers: perceptions and motivations of farmers’ market customers. Australian Planner, 55(1), 28-35. [More Information]
• Anwar, J., Torvaldsen, S., Sheikh, M., Taylor, R. (2018). Under-estimation of maternal and perinatal mortality revealed by an enhanced surveillance system: Enumerating all births and deaths in Pakistan. BMC Public Health, 18(1), 1-14. [More Information]

2017

• Roberts, C., Wagland, P., Torvaldsen, S., Bowen, J., Bentley, J., Morris, J. (2017). Childhood outcomes following preterm prelabor rupture of the membranes (PPROM): A population-based record linkage cohort study. Journal of Perinatology, 37(11), 1230-1235. [More Information]
• Baldwin, H., Patterson, J., Nippita, T., Torvaldsen, S., Ibiebele, I., Simpson, J., Ford, J. (2017). Maternal and neonatal outcomes following abnormally invasive placenta: a population-based record linkage study. Acta Obstetricia et Gynecologica Scandinavica, 96(11), 1373-1381. [More Information]
• Crawford, B., Byun, R., Mitchell, E., Thompson, S., Jalaludin, B., Torvaldsen, S. (2017). Socioeconomic differences in the cost, availability and quality of healthy food in Sydney. Australian and New Zealand Journal of Public Health, 41(6), 567-571. [More Information]
• Sparrow, E., Friede, M., Sheikh, M., Torvaldsen, S. (2017). Therapeutic antibodies for infectious diseases. Bulletin of the World Health Organization, 95(3), 235-237. [More Information]

2016

• Sparrow, E., Friede, M., Sheikh, M., Torvaldsen, S., Newall, A. (2016). Passive immunization for influenza through antibody therapies, a review of the pipeline, challenges and potential applications. Vaccine, 34(45), 5442-5448. [More Information]

2015

• Crawford, B., Yamazaki, R., Franke, E., Amanatidis, S., Ravulo, J., Torvaldsen, S. (2015). Is something better than nothing? Food insecurity and eating patterns of young people experiencing homelessness. Australian and New Zealand Journal of Public Health, 39(4), 350-354. [More Information]

2014

• Joshi, C., Torvaldsen, S., Hodgson, R., Hayen, A. (2014). Factors associated with the use and quality of antenatal care in Nepal: A population-based study using the demographic and health survey data. BMC Pregnancy and Childbirth, 14(1). [More Information]
• Freeman, E., Lawrence, G., McAnulty, J., Tobin, S., MacIntyre, C., Torvaldsen, S. (2014). Field effectiveness of hepatitis A vaccine and uptake of post exposure prophylaxis following a change to the Australian guidelines. Vaccine, 32(42), 5509-5513. [More Information]
• Maher, L., Dawson, A., Wiley, K., Hope, K., Torvaldsen, S., Lawrence, G., Conaty, S. (2014). Influenza vaccination during pregnancy: a qualitative study of the knowledge, attitudes, beliefs, and practices of general practitioners in Central and South-Western Sydney. BMC Family Practice, 15(1), 1-9. [More Information]
• Crawford, B., Yamazaki, R., Franke, E., Amanatidis, S., Ravulo, J., Steinbeck, K., Ritchie, J., Torvaldsen, S. (2014). Sustaining dignity? Food insecurity in homeless young people in urban Australia. Health Promotion Journal of Australia, 25(2), 71-78. [More Information]

2013

• Maher, L., Hope, K., Torvaldsen, S., Lawrence, G., Dawson, A., Wiley, K., Thomson, D., Hayen, A., Conaty, S. (2013). Influenza vaccination during pregnancy: Coverage rates and influencing factors in two urban districts in Sydney. Vaccine, 31(47), 5557-5564. [More Information]
• Gunaratnam, P., Massey, P., Durrheim, D., Torvaldsen, S. (2013). Invasive meningococcal disease in elderly people, New South Wales, Australia, 1993 to 2012. Western Pacific Surveillance and Response, 4(4), 4-10.
• Nguyen-duy, T., Shrewsbury, V., O'Connor, J., Steinbeck, K., Hill, A., Shah, S., Kohn, M., Torvaldsen, S., Baur, L. (2013). Two-year outcomes of an adjunctive telephone coaching and electronic contact intervention for adolescent weight-loss maintenance: the Loozit randomized controlled trial. International Journal of Obesity, 37(3), 468-472. [More Information]

2012

• Crawford, B., Rissel, C., Yamazaki, R., Franke, E., Amanatidis, S., Ravulo, J., Bindon, J., Torvaldsen, S. (2012). 'It's good to have wheels!' Perceptions of cycling among homeless young people in Sydney, Australia. Youth Studies Australia, 31(4), 55-63. [More Information]
• Shrewsbury, V., Garnett, S., Campbell, K., Carver, A., Torvaldsen, S., Steinbeck, K., Cowell, C., Baur, L. (2012). Maternal Misconceptions of Weight Status among Nepean Adolescents. Journal of The Academy of Nutrition and Dietetics, 112(12), 2007-2013. [More Information]
• Torvaldsen, S., Roberts, C. (2012). No increased risk of caesarean or instrumental delivery for nulliparous women who have epidural analgesia early in (term) labour. Evidence-Based Medicine, 17(1), 21-22. [More Information]
• Maher, L., Phelan, C., Lawrence, G., Dawson, A., Torvaldsen, S., Wright, F. (2012). The Early Childhood Oral Health Program: promoting prevention and timely intervention of early childhood caries in NSW through shared care. Health Promotion Journal of Australia, 23(3), 171-176. [More Information]
• Nguyen-duy, T., Shrewsbury, V., O'Connor, J., Steinbeck, K., Lee, A., Hill, A., Shah, S., Kohn, M., Torvaldsen, S., Baur, L. (2012). Twelve-Month Outcomes of the Loozit Randomized Controlled Trial: A Community-Based Healthy Lifestyle Program for Overweight and Obese Adolescents. Archives of Pediatrics & Adolescent Medicine, 166(2), 170-177. [More Information]

2011

• Liljeqvist, G., Staff, M., Puech, M., Blom, H., Torvaldsen, S. (2011). Automated data extraction from general practice records in an Australian setting: Trends in influenza-like illness in sentinel general practices and emergency departments. BMC Public Health, 11(435), 1-7. [More Information]
• Polkinghorne, B., Muscatello, D., MacIntyre, C., Lawrence, G., Middleton, P., Torvaldsen, S. (2011). Relationship between the population incidence of febrile convulsions in young children in Sydney, Australia and seasonal epidemics of influenza and respiratory syncytial virus, 2003-2010: a time series analysis. BMC Infectious Diseases, 11(1), 1-10. [More Information]
• Shrewsbury, V., Nguyen-duy, T., O'Connor, J., Steinbeck, K., Lee, A., Hill, A., Shah, S., Kohn, M., Torvaldsen, S., Baur, L. (2011). Short-term outcomes of community-based adolescent weight management: The Loozit(R) Study. BMC Pediatrics, 11(13), 1-10. [More Information]
• Shrewsbury, V., Steinbeck, K., Torvaldsen, S., Baur, L. (2011). The role of parents in pre-adolescent and adolescent overweight and obesity treatment: a systematic review of clinical recommendations. Obesity Reviews, 12(10), 759-769. [More Information]

2010

• Raynes-Greenow, C., Nassar, N., Torvaldsen, S., Trevena, L., Roberts, C. (2010). Assisting informed decision making for labour analgesia: a randomised controlled trial of a decision aid for labour analgesia versus a pamphlet. BMC Pregnancy and Childbirth, 10(15), 15-1-15-13. [More Information]

2009

• Shrewsbury, V., O'Connor, J., Steinbeck, K., Stevenson, K., Lee, A., Hill, A., Kohn, M., Shah, S., Torvaldsen, S., Baur, L. (2009). A randomised controlled trial of a community-based healthy lifestyle program for overweight and obese adolescents: the Loozit study protocol. BMC Public Health, 9, 1-12. [More Information]

2006

• Torvaldsen, S., Roberts, C., Simpson, J., Thompson, J., Ellwood, D. (2006). Intrapartum epidural analgesia and breastfeeding: a prospective cohort study. International Breastfeeding Journal, 1, 24-24. [More Information]

2005

• Roberts, C., Algert, C., Cameron, C., Torvaldsen, S. (2005). A meta-analysis of upright positions in the second stage to reduce instrumental deliveries in women with epidural analgesia. Acta Obstetricia et Gynecologica Scandinavica, 84(8), 794-798. [More Information]
• Cagney, M., MacIntyre, C., McIntyre, P., Torvaldsen, S., Melot, V. (2005). Cough symptoms in children aged 5-14 years in Sydney, Australia: non-specific cough or unrecognized pertussis? Respirology, 10(3), 359-364. [More Information]

2004

• Roberts, C., Torvaldsen, S., Cameron, C., Olive, E. (2004). Delayed Versus Early Pushing In Women With Epidural Analgesia: A Systematic Review And Meta-Analysis. BJOG, 111(12), 1333-1340. [More Information]
• Torvaldsen, S., Roberts, C., Bell, J., Raynes-Greenow, C. (2004). Discontinuation Of Epidural Analgesia Late In Labour For Reducing The Adverse Delivery Outcomes Associated With Epidural Analgesia. Cochrane Database of Systematic Reviews, 4(1), 1-37.

2003

• Torvaldsen, S., McIntyre, P. (2003). Do variations in pertussis notifications reflect incidence or surveillance practices? A comparison of infant notification rates and hospitalisation data in NSW. NSW Public Health Bulletin, 14(4-5), 81-84.
• Torvaldsen, S., McIntyre, P. (2003). Effect of the preschool pertussis booster on national notifications of disease in Australia. Pediatric Infectious Disease Journal, 22(11), 956-959. [More Information]
• Torvaldsen, S., Simpson, J., McIntyre, P. (2003). Effectiveness of pertussis vaccination in New South Wales, Australia, 1996-1998. European Journal of Epidemiology, 18(1), 63-69. [More Information]

2002

• Torvaldsen, S., McIntyre, P. (2002). Observational methods in epidemiologic assessment of vaccine effectiveness. Communicable Diseases Intelligence Quarterly Report, 26(3), 451-457.
• Torvaldsen, S., Hull, B., McIntyre, P. (2002). Using the Australian Childhood Immunisation Register to track the transition from whole-cell to aceullular pertussis vaccines. Communicable Diseases Intelligence Quarterly Report, 26(4), 581-583.

2000

• McIntyre, P., Amin, J., Gidding, H., Hull, B., Torvaldsen, S., Tucker, A., Turnbull, F., Burgess, M. (2000). Vaccine preventable diseases and vaccination coverage in Australia, 1993-1998. Communicable Diseases Intelligence Quarterly Report, 24, 276-277.