selected scholarly activity
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conferences
- THE IMPACT OF BARIATRIC SURGERY ON MATERNAL, FETAL AND INFANT OUTCOMES: A POPULATION-BASED, MATCHED COHORT STUDY. Obesity Surgery. 329-329. 2023
- 475: Do competing risks matter? The case of chronic hypertension and the incidence of severe preeclampsia. American Journal of Obstetrics and Gynecology. S311-S312. 2020
- Temporal trends in pelvic organ prolapse surgery with mesh and associated postoperative complications by surgical approach in Canada 2004-2014. International Urogynecology Journal and Pelvic Floor Dysfunction. S21-S22. 2018
- OBSTETRIC TRAUMA ASSOCIATED WITH OPERATIVE VAGINAL DELIVERY, BY PELVIC STATION, COMPARED WITH CESAREAN DELIVERY IN THE SECOND STAGE OF LABOUR. International Urogynecology Journal and Pelvic Floor Dysfunction. S5-S6. 2017
- TEMPORAL TRENDS IN PELVIC ORGAN PROLAPSE SURGERY IN CANADA. International Urogynecology Journal and Pelvic Floor Dysfunction. S4-S5. 2017
- 588: The effect of maternal age on severe maternal morbidity and perinatal outcomes. American Journal of Obstetrics and Gynecology. S347-S347. 2017
- 914: Delivery options for second stage dystopia: a comparison of operative vaginal and cesarean delivery in terms of severe perinatal and maternal morbidity and mortality. American Journal of Obstetrics and Gynecology. S521-S522. 2017
- Temporal trends in rates of severe birth trauma by mode of delivery. American Journal of Obstetrics and Gynecology. S367-S367. 2017
- 884: Maternal and infant morbidity associated with uterine rupture. American Journal of Obstetrics and Gynecology. S420-S421. 2015
- Molecular Classification with 21 Gene Assay (Oncotype DX) Shows in 196,967 ER Positive Patients High Frequency of Low Recurrence Score [LRS] in Both Node Positive (Ni-) and Negative (N-) Breast Cancer (BrCa) Cohorts. Definition of Chemoresistance Based on LRS with Cost and Guideline Implications.. Cancer Research. 2011
- Abstract P6-09-09: Dual Estrogen Effects on Breast Cancer: Endogenous Estrogen Stimulates, Exogenous Estrogen Protects. Further Investigation of Estrogen Chemoprevention Is Warranted. Cancer Research. 2010
- Pregnancy in thalassemia patients and their partners in a Canadian population.. Blood. 39B-39B. 2005
- Hemoglobin E‐β‐Thalassemia: Progress Report from the International Study Group. Annals of the New York Academy of Sciences. 33-39. 2005
- Successful pregnancy in thalassemia major women in the Thalassemia Clinical Research Network.. Blood. 36B-37B. 2003
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journal articles
- Spatiotemporal patterns and surveillance artifacts in maternal mortality in the United States: a population-based study.. The Lancet Regional Health - Americas. 39:100902. 2024
- Risk of postpartum hemorrhage with increasing first stage labor duration.. Scientific Reports. 14:22152. 2024
- Unintended Upper Uterine Wall Extensions at the Time of Cesarean Delivery: Risk Factors and Associated Adverse Maternal and Neonatal Outcomes.. American Journal of Perinatology. 2024
- Risk of cervical laceration in forceps vs vacuum delivery: A systematic review and meta-analysis.. Acta Obstetricia et Gynecologica Scandinavica. 2024
- Defining mode of delivery as 'instrumental vaginal delivery': are results generalizable to both forceps and vacuum?. American Journal of Obstetrics and Gynecology. S0002-9378(24)00844-5. 2024
- Dispelling Confusion About the Effect of Episiotomy With Operative Vaginal Delivery: A Reply to "Large Databases Cannot Illuminate Practice Variation in the Use of Episiotomy".. Journal of Obstetrics and Gynaecology Canada. 46:102589. 2024
- Impacted fetal head extraction methods at second stage cesarean and subsequent preterm delivery: A multicenter study. International Journal of Gynecology and Obstetrics. 166:775-782. 2024
- Temporal changes in maternal mortality in the United States. American Journal of Obstetrics and Gynecology. 231:e96-e98. 2024
- Why improved surveillance is critical for reducing maternal deaths in the United States: a response to the American College of Obstetricians and Gynecologists. American Journal of Obstetrics and Gynecology. 231:e87-e92. 2024
- Sterile water injections for back pain in labour. The BMJ. 385:q1187-q1187. 2024
- Delivery in the second stage of labor and preterm birth in a subsequent pregnancy: a response. American Journal of Obstetrics and Gynecology. S0002-9378(24)00734-8. 2024
- Racial Disparities in Maternal Blood Transfusion in the United States by Mode of Delivery: A Population-Based Retrospective Cohort Study [ID 2683649]. Obstetrics and Gynecology. 143:46S-46S. 2024
- Severe maternal morbidity surveillance, temporal trends and regional variation: A population‐based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology. 131:811-822. 2024
- Variation in Episiotomy Use Among Nulliparous Individuals by Maternity Care Provider and Associated Rates of Obstetric Anal Sphincter Injury. Journal of Obstetrics and Gynaecology Canada. 46:102415-102415. 2024
- Effect of the COVID-19 Pandemic on Stillbirths in Canada and the United States. Journal of Obstetrics and Gynaecology Canada. 46:102338-102338. 2024
- Maternal mortality in the United States: are the high and rising rates due to changes in obstetrical factors, maternal medical conditions, or maternal mortality surveillance?. American Journal of Obstetrics and Gynecology. 230:440.e1-440.e13. 2024
- The association between unintended hysterotomy extensions with cesarean delivery and subsequent preterm birth. American Journal of Obstetrics and Gynecology MFM. 6:101326-101326. 2024
- COVID-19 Pandemic–Related Changes in Rates of Neonatal Abstinence Syndrome. JAMA network open. 7:e241651-e241651. 2024
- Operative delivery in the second stage of labor and preterm birth in a subsequent pregnancy: a systematic review and meta-analysis. American Journal of Obstetrics and Gynecology. 230:295-307.e2. 2024
- Prepregnancy body mass index and other risk factors for early-onset and late-onset haemolysis, elevated liver enzymes and low platelets (HELLP) syndrome: a population-based retrospective cohort study in British Columbia, Canada. BMJ Open. 14:e079131-e079131. 2024
- Asian-White disparities in obstetric anal sphincter injury: a systematic review and meta-analysis. AJOG Global Reports. 4:100296-100296. 2024
- 1042 Racial disparities in maternal transfusion in the United States by mode of delivery. American Journal of Obstetrics and Gynecology. 230:S548-S549. 2024
- 741 The association between hysterotomy extension and subsequent preterm birth. American Journal of Obstetrics and Gynecology. 230:S395-S395. 2024
- 902 Impact of method of fetal extraction in second stage cesarean delivery on subsequent preterm delivery. American Journal of Obstetrics and Gynecology. 230:S477-S478. 2024
- Maternal, Fetal and Infant outcomes Associated with Bariatric Surgery: A Matched Cohort Study. Annals of Surgery. 2024
- Neonatal abstinence syndrome and infant mortality and morbidity: a population-based study. Frontiers in Pediatrics. 12:1394682. 2024
- Outcomes associated with planned place of birth among low-risk pregnancies in Ontario, Canada (2012–2021): A protocol for a population-based propensity score weighted cohort study. PLoS ONE. 19:e0302489-e0302489. 2024
- Racial disparities in maternal blood transfusion in the United States by mode of delivery.. PLoS ONE. 19:e0312110. 2024
- Temporal trends in peripartum hysterectomy among individuals with a previous cesarean delivery by race/ethnicity in the United States: A population-based cohort study. PLoS ONE. 19:e0304777-e0304777. 2024
- Authors’ reply to Datta. The BMJ. 383:p2952-p2952. 2023
- Obstetric Intervention and Perinatal Outcomes During the Coronavirus Disease 2019 (COVID-19) Pandemic. Obstetrics and Gynecology. 142:1405-1415. 2023
- Validation of Parent-reported Gestational Age Categories for Children Less Than 6 Years of Age. Epidemiology. 34:767-773. 2023
- Maternal and neonatal trauma during forceps and vacuum delivery must not be overlooked. The BMJ. 383:e073991-e073991. 2023
- ASSESSMENT OF ADVERSE PREGNANCY AND FERTILITY OUTCOMES AMONG CANADIAN FEMALE PHYSICIANS. Fertility and Sterility. 120:e55-e55. 2023
- Response to the Commentary ‘Causes of ART‐related outcomes in the COVID‐19 era’. Paediatric and Perinatal Epidemiology. 37:566-568. 2023
- Chorioamnionitis and Risk of Long-term Neurodevelopmental Disorders in Offspring: A Population-based Cohort Study. Obstetric Anesthesia Digest. 43:66-67. 2023
- Pre-pregnancy body mass index and other risk factors for early- and late-onset hemolysis, elevated liver enzymes, and low platelets (HELLP) syndrome: A population-based retrospective cohort study. 2023
- Asian-White disparities in obstetric anal sphincter injury: A systematic review and meta-analysis. Journal of Obstetrics and Gynaecology Canada. 45:364-364. 2023
- Prepregnancy body mass index and adverse perinatal outcomes in the presence of other maternal risk factors. AJOG Global Reports. 3:100175-100175. 2023
- The association between maternal stature and adverse birth outcomes and the modifying effect of race and ethnicity: a population-based retrospective cohort study. AJOG Global Reports. 3:100184-100184. 2023
- Does maternal stature modify the association between infants who are small or large for gestational age and adverse perinatal outcomes? A retrospective cohort study. BJOG: An International Journal of Obstetrics and Gynaecology. 130:464-475. 2023
- Hospital factors associated with maternal and neonatal outcomes of deliveries to patients with a previous cesarean delivery: an ecological study. CANADIAN MEDICAL ASSOCIATION JOURNAL. 195:E178-E186. 2023
- Early coronavirus disease 2019 restrictive measures and changes in maternal characteristics, use of assisted reproductive technology, and stillbirth. Paediatric and Perinatal Epidemiology. 37:117-127. 2023
- Asian-white disparities in obstetric anal sphincter injury: Protocol for a systematic review and meta-analysis. PLoS ONE. 18:e0291174-e0291174. 2023
- Pre-pregnancy body mass index and HELLP syndrome: A population-based retrospective cohort study. American Journal of Obstetrics and Gynecology. 228:S683-S683. 2023
- Time of Delivery Among Low-Risk Women at 37–42 Weeks of Gestation and Risks of Stillbirth and Infant Mortality, and Long-term Neurological Morbidity. Obstetrical and Gynecological Survey. 78:1-2. 2023
- Racial and Ethnic Disparities in the Perinatal Health of Infants Conceived by ART. Pediatrics. 150:e2021055855. 2022
- The authors reply regarding transparency, balance and perspective on intervention at full dilation. CANADIAN MEDICAL ASSOCIATION JOURNAL. 194:E1174-E1174. 2022
- Incidence and Risk Factors for Severe Preeclampsia, Hemolysis, Elevated Liver Enzymes, and Low Platelet Count Syndrome, and Eclampsia at Preterm and Term Gestation: A Population-based Study. Obstetric Anesthesia Digest. 42:121-121. 2022
- Chorioamnionitis and risk of long-term neurodevelopmental disorders in offspring: a population-based cohort study. American Journal of Obstetrics and Gynecology. 227:287.e1-287.e17. 2022
- Crude and adjusted comparisons of cesarean delivery rates using the Robson classification: A population-based cohort study in Canada and Sweden, 2004 to 2016. PLoS Medicine. 19:e1004077-e1004077. 2022
- Time of delivery among low‐risk women at 37–42 weeks of gestation and risks of stillbirth and infant mortality, and long‐term neurological morbidity. Paediatric and Perinatal Epidemiology. 36:577-587. 2022
- Authors reply re: The Ten Group Classification System – First Things First. BJOG: An International Journal of Obstetrics and Gynaecology. 129:1171-1173. 2022
- Adjusted Comparisons of Cesarean Delivery Rates Between Populations Using the Robson Classification: A Population-Based Cohort Study in Canada and Sweden. Journal of Obstetrics and Gynaecology Canada. 44:621-621. 2022
- Associations Between Maternal Trauma Rates in Spontaneous Vaginal, Attempted Forceps, and Attempted Vacuum Deliveries in Canadian Hospitals. Journal of Obstetrics and Gynaecology Canada. 44:621-621. 2022
- Outcome-Based Cesarean Delivery Rate Targets by Robson Group: Population-Based Analysis of Deliveries from Canada and Sweden. Journal of Obstetrics and Gynaecology Canada. 44:620-620. 2022
- Primary Cesarean Deliveries of Term Singletons Prior to or in Labour and Risks of Severe Maternal Morbidity: A Comparison of Canadian Tiers of Obstetric Services. Journal of Obstetrics and Gynaecology Canada. 44:604-604. 2022
- Regionalized Perinatal Care in Canada: Can Small Hospitals Safely Deliver Women with a Previous Cesarean Delivery?. Journal of Obstetrics and Gynaecology Canada. 44:611-612. 2022
- Temporal Trends in Cesarean Delivery in Sweden and British Columbia Using the Robson Classification: The Role of Confounding. Journal of Obstetrics and Gynaecology Canada. 44:620-620. 2022
- Variation in Episiotomy Use by Maternity Care Provider and Associated Rates of Obstetric Anal Sphincter Injury. Journal of Obstetrics and Gynaecology Canada. 44:620-620. 2022
- Postpartum haemorrhage trends in Sweden using the Robson ten group classification system: a population‐based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology. 129:562-571. 2022
- Maternal and neonatal trauma following operative vaginal delivery. CANADIAN MEDICAL ASSOCIATION JOURNAL. 194:E1-E12. 2022
- Racial disparities in birth outcomes following assisted reproduction. American Journal of Obstetrics and Gynecology. 226:S644-S645. 2022
- Accuracy of Postpartum Hemorrhage Coding in the Swedish Pregnancy Register. Obstetric Anesthesia Digest. 41:172-173. 2021
- Incidence and risk factors for severe preeclampsia, hemolysis, elevated liver enzymes, and low platelet count syndrome, and eclampsia at preterm and term gestation: a population-based study. American Journal of Obstetrics and Gynecology. 225:538.e1-538.e19. 2021
- Survival and complications in patients with haemoglobin E thalassaemia in Sri Lanka: a prospective, longitudinal cohort study. The Lancet Global Health. 10:e134-e141. 2021
- Evaluating the effect of changes in maternal, infant, and obstetric practice factors on cesarean delivery trends in Sweden and Canada using the Robson classification system. Paediatric and Perinatal Epidemiology. 35:47-47. 2021
- 842Prevention of severe preeclampsia at term gestation among women with chronic hypertension. International Journal of Epidemiology. 50:dyab168.394. 2021
- Maternal Mortality in the United States: Recent Trends, Current Status, and Future Considerations. Obstetric Anesthesia Digest. 41:110-110. 2021
- Maternal Risk Factors and Adverse Birth Outcomes Associated With HELLP Syndrome: A Population-based Study. Obstetric Anesthesia Digest. 41:62-63. 2021
- Maternal Mortality in the United States. Obstetrics and Gynecology. 137:763-771. 2021
- Accuracy of postpartum hemorrhage coding in the Swedish Pregnancy Register. Acta Obstetricia et Gynecologica Scandinavica. 100:322-330. 2021
- Bias in comparisons of mortality among very preterm births: A cohort study. PLoS ONE. 16:e0253931-e0253931. 2021
- Modern obstetrics: beyond early delivery for fetal or maternal compromise. American Journal of Obstetrics and Gynecology MFM. 3:100274-100274. 2021
- Maternal risk factors and adverse birth outcomes associated with HELLP syndrome: a population‐based study. BJOG: An International Journal of Obstetrics and Gynaecology. 127:1189-1198. 2020
- Paternal exposure to antiepileptic drugs and offspring outcomes: a nationwide population-based cohort study in Sweden. Journal of Neurology, Neurosurgery and Psychiatry. 91:907-913. 2020
- Maternal obesity and risk of cardiovascular diseases in offspring: a population-based cohort and sibling-controlled study. The Lancet Diabetes and Endocrinology. 8:572-581. 2020
- Regional Variation and Temporal Trends in Surgery for Pelvic Organ Prolapse in Canada, 2004-2014. Journal of Obstetrics and Gynaecology Canada. 42:846-852.e5. 2020
- The authors respond to “Routine use of episiotomy with forceps should not be encouraged”. CANADIAN MEDICAL ASSOCIATION JOURNAL. 192:E191-E192. 2020
- Temporal Trends in Preterm Birth, Neonatal Mortality, and Neonatal Morbidity Following Spontaneous and Clinician-Initiated Delivery in Canada, 2009-2016. Journal of Obstetrics and Gynaecology Canada. 41:1742-1751.e6. 2019
- Episiotomy use among vaginal deliveries and the association with anal sphincter injury: a population-based retrospective cohort study. CANADIAN MEDICAL ASSOCIATION JOURNAL. 191:E1149-E1158. 2019
- Key considerations when comparing outcomes by mode of delivery raise questions about study validity and clinical relevance. CANADIAN MEDICAL ASSOCIATION JOURNAL. 191:E923-E923. 2019
- Neonatal Abstinence Syndrome and Associated Neonatal and Maternal Mortality and Morbidity. Pediatrics. 144:e20183664. 2019
- TEMPORAL TRENDS IN EPISIOTOMY USE AMONG SPONTANEOUS AND OPERATIVE VAGINAL DELIVERIES IN CANADA AND THE ASSOCIATION WITH OBSTETRIC ANAL SPHINCTER INJURY. Journal of Obstetrics and Gynaecology Canada. 41:726-727. 2019
- Morbidity and Mortality Associated With Forceps and Vacuum Delivery at Outlet, Low, and Midpelvic Station. Journal of Obstetrics and Gynaecology Canada. 41:327-337. 2019
- Temporal trends in neonatal mortality and morbidity following spontaneous and clinician-initiated preterm birth in Washington State, USA: a population-based study. BMJ Open. 9:e023004-e023004. 2019
- Perinatal and Maternal Morbidity and Mortality Among Term Singletons Following Midcavity Operative Vaginal Delivery Versus Cesarean Delivery. Obstetric Anesthesia Digest. 38:202-203. 2018
- Authors/ reply re: Perinatal and maternal morbidity and mortality among term singletons following mid cavity operative vaginal delivery versus caesarean delivery. BJOG: An International Journal of Obstetrics and Gynaecology. 125:1492-1492. 2018
- Association Between Prepregnancy Body Mass Index and Severe Maternal Morbidity. Obstetric Anesthesia Digest. 38:130-131. 2018
- Ecological association between operative vaginal delivery and obstetric and birth trauma. CANADIAN MEDICAL ASSOCIATION JOURNAL. 190:E734-E741. 2018
- Mode of delivery after a previous cesarean birth, and associated maternal and neonatal morbidity. CANADIAN MEDICAL ASSOCIATION JOURNAL. 190:E556-E564. 2018
- Authors' reply re: Perinatal and maternal morbidity and mortality among term singletons following midcavity operative vaginal delivery versus caesarean delivery. BJOG: An International Journal of Obstetrics and Gynaecology. 125:758-759. 2018
- Authors' reply re: Perinatal and maternal morbidity and mortality among term singletons following midcavity operative vaginal delivery versus caesarean delivery. BJOG: An International Journal of Obstetrics and Gynaecology. 125:760-760. 2018
- Perinatal and maternal morbidity and mortality among term singletons following midcavity operative vaginal delivery versus caesarean delivery. BJOG: An International Journal of Obstetrics and Gynaecology. 125:693-702. 2018
- Association Between Prepregnancy Body Mass Index and Severe Maternal Morbidity. Obstetrical and Gynecological Survey. 73:197-198. 2018
- Temporal trends in severe maternal and neonatal trauma during childbirth: a population-based observational study. BMJ Open. 8:e020578-e020578. 2018
- Association Between Prepregnancy Body Mass Index and Severe Maternal Morbidity. Journal of the American Medical Association (JAMA). 318:1777-1777. 2017
- Response to “Data limitations may affect conclusions in study of vaginal delivery at midpelvic station”. CANADIAN MEDICAL ASSOCIATION JOURNAL. 189:E1344-E1345. 2017
- The authors reply to “The end of forceps deliveries?” and “Beware selection bias”. CANADIAN MEDICAL ASSOCIATION JOURNAL. 189:E1098-E1098. 2017
- Perinatal and maternal morbidity and mortality after attempted operative vaginal delivery at midpelvic station. CANADIAN MEDICAL ASSOCIATION JOURNAL. 189:E764-E772. 2017
- Methodological Challenges in International Comparisons of Perinatal Mortality. CURRENT EPIDEMIOLOGY REPORTS. 4:73-82. 2017
- Maternal age and severe maternal morbidity: A population-based retrospective cohort study. PLoS Medicine. 14:e1002307-e1002307. 2017
- Letter to the Editor in Response to: Amir, Baharak et al. The Long-Term Pelvic Floor Health Outcomes of Women After Childbirth: The Influence of Labour in the First Pregnancy. Journal of Obstetrics and Gynaecology Canada. 39:217-217. 2017
- 628: Temporal trends in rates of severe birth trauma by mode of delivery. American Journal of Obstetrics and Gynecology. 216:S367-S367. 2017
- Factors Underlying the Temporal Increase in Maternal Mortality in the United States. Obstetrics and Gynecology. 129:91-100. 2017
- Temporal trends in obstetric trauma and inpatient surgery for pelvic organ prolapse: an age-period-cohort analysis. American Journal of Obstetrics and Gynecology. 215:208.e1-208.e12. 2016
- Temporal and Regional Variations in Operative Vaginal Delivery in Canada by Pelvic Station, 2004-2012. Journal of Obstetrics and Gynaecology Canada. 38:627-635. 2016
- Once More Unto the Breech: Planned Vaginal Delivery Compared With Planned Cesarean Delivery. Obstetric Anesthesia Digest. 36:74-75. 2016
- Once More Unto the Breech. Obstetrics and Gynecology. 125:1162-1167. 2015
- The Association Between Maternal Age and Depression. Journal of Obstetrics and Gynaecology Canada. 36:803-810. 2014
- PD06-01: Molecular Classification with 21 Gene Assay (Oncotype DX®) Shows in 196,967 ER Positive Patients High Frequency of Low Recurrence Score [LRS] in Both Node Positive (N+) and Negative (N-) Breast Cancer (BrCa) Cohorts. Definition of Chemoresistance Based on LRS with Cost and Guideline Implications.. Cancer Research. 71:pd06-01-pd06-01. 2011
- Rates of Non-Transfusional Iron Accumulation (NTIA) In Hemoglobin E Thalassemia. Blood. 116:5147-5147. 2010
- Emerging insights in the management of hemoglobin E beta thalassemia. Annals of the New York Academy of Sciences. 1202:155-157. 2010
- Inflammation and oxidant-stress in -thalassemia patients treated with iron chelators deferasirox (ICL670) or deferoxamine: an ancillary study of the Novartis CICL670A0107 trial. Hematology Journal. 93:817-825. 2008
- Studies in haemoglobin E beta‐thalassaemia. British Journal of Haematology. 141:388-397. 2008
- Pregnancy in Thalassemia Patients and Their Partners in a Canadian Population.. Blood. 106:3835-3835. 2005
- Haemoglobin E β thalassaemia in Sri Lanka. The Lancet. 366:1467-1470. 2005
- Thalassemia in Sri Lanka: a progress report. Human Molecular Genetics. 13:R203-R206. 2004
- Insertion of a Structural Domain of Interleukin (IL)-1β Confers Agonist Activity to the IL-1 Receptor Antagonist. Journal of Biological Chemistry. 270:22460-22466. 1995
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preprints
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reports
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theses