Associate Professor Siranda Torvaldsen

Principal Research Fellow
Northern Clinical School


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Selected publications

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Journals

  • Baldwin, H., Patterson, J., Nippita, T., Torvaldsen, S., Ibiebele, I., Simpson, J., Ford, J. (2018). (affiliation) Antecedents of Abnormally Invasive Placenta in Primiparous Women: Risk Associated With Gynecologic Procedures. Obstetrics and Gynecology, 131(2), 227-233. [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´┐Ż 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]
  • 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]
  • 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]
  • 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]
  • 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]
  • Nguyen, B., 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]
  • 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.
  • 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, B., 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]
  • 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, B., 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]
  • 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]
  • 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]
  • 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]
  • 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]
  • 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.
  • 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]
  • 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.
  • 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.

2018

  • Baldwin, H., Patterson, J., Nippita, T., Torvaldsen, S., Ibiebele, I., Simpson, J., Ford, J. (2018). (affiliation) Antecedents of Abnormally Invasive Placenta in Primiparous Women: Risk Associated With Gynecologic Procedures. Obstetrics and Gynecology, 131(2), 227-233. [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´┐Ż 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]

2014

  • 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]
  • Nguyen, B., 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.
  • 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, B., 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, B., 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.

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