Hannah Dahlen

Prof. Hannah Dahlen


Research Focus & Metrics

Academic Career Length

34Years (1993-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 July 2018 in Midwifery
Verified
Journal Article
Open access
VSVanessa Scarf
Vanessa Scarf
CRChris Rossiter
Chris Rossiter
SVSaraswathi Vedam
Saraswathi Vedam
HDHannah Dahlen
Hannah Dahlen
DEDavid Alan Ellwood
David Alan Ellwood
CHCaroline S E Homer
Caroline S E Homer
The comparative safety of different birth settings is widely debated. Comparing research across high-income countries is complex, given differences in maternity service provision, data discrepancies, and varying research techniques and quality. Studies of births planned at home or in birth centres have reported both better and poorer outcomes than planned hospital births. Previous systematic reviews have focused on outcomes from either birth centres or home births, with inconsistent attention to quality appraisal. Few have attempted to synthesise findings. To compare maternal and perinatal outcomes from different places of birth via a systematic review of high-quality research, and meta-analysis of appropriate data (Prospero registration CRD42016042291). Reviewers searched CINAHL, Embase, Maternity and Infant Care, Medline and PsycINFO databases to identify studies comparing selected outcomes by place of birth among women with low-risk pregnancies in high-income countries. They critically appraised identified studies using an instrument specific to birth place research and then combined outcome data via meta-analysis, using RevMan software. Twenty-eight articles met inclusion criteria, yielding comparative data on perinatal mortality, mode of birth, maternal morbidity and/or NICU admissions. Meta-analysis indicated that women planning hospital births had statistically significantly lower odds of normal vaginal birth than in other planned settings. Women experienced severe perineal trauma or haemorrhage at a lower rate in planned home births than in obstetric units. There were no statistically significant differences in infant mortality by planned place of birth, although most studies had limited statistical power to detect differences for rare outcomes. Differences in location, context, quality and design of identified studies render results subject to variation. High-quality evidence about low-risk pregnancies indicates that place of birth had no statistically significant impact on infant mortality. The lower odds of maternal morbidity and obstetric intervention support the expansion of birth centre and home birth options for women with low-risk pregnancies.

10 April 2014 in Maternal & Child Nutrition
Verified
Journal Article
Closed access
PDF file
JSJeni Stevens
Jeni Stevens
VSVirginia Schmied
Virginia Schmied
EBElaine Burns
Elaine Burns
HDHannah Dahlen
Hannah Dahlen

28 March 2018 in Cochrane Database of Systematic Reviews
Verified
Journal Article
Closed access
PDF file
CSCaroline A Smith
Caroline A Smith
KLKate M Levett
Kate M Levett
CCCarmel T Collins
Carmel T Collins
Mike ArmourMike Armour
Mike Armour
HDHannah Dahlen
Hannah Dahlen
MSMachiko Suganuma
Machiko Suganuma

28 March 2018 in Cochrane Database of Systematic Reviews
Verified
Journal Article
Closed access
PDF file
CSCaroline A Smith
Caroline A Smith
KLKate M Levett
Kate M Levett
CCCarmel T Collins
Carmel T Collins
HDHannah Dahlen
Hannah Dahlen
Carolyn EeCarolyn Ee
Carolyn Ee
MSMachiko Suganuma
Machiko Suganuma

12 July 2016 in BMJ Open
Verified
Journal Article
Open access
PDF file
Kate LevettKate Levett
Kate Levett
CSC A Smith
C A Smith
ABA Bensoussan
A Bensoussan
HDHannah Dahlen
Hannah Dahlen
Objective To evaluate the effect of an antenatal integrative medicine education programme in addition to usual care for nulliparous women on intrapartum epidural use. Design Open-label, assessor blind, randomised controlled trial. Setting 2 public hospitals in Sydney, Australia. Population 176 nulliparous women with low-risk pregnancies, attending hospital-based antenatal clinics. Methods and intervention The Complementary Therapies for Labour and Birth protocol, based on the She Births and acupressure for labour and birth courses, incorporated 6 evidence-based complementary medicine techniques: acupressure, visualisation and relaxation, breathing, massage, yoga techniques, and facilitated partner support. Randomisation occurred at 24–36 weeks’ gestation, and participants attended a 2-day antenatal education programme plus standard care, or standard care alone. Main outcome measures Rate of analgesic epidural use. Secondary: onset of labour, augmentation, mode of birth, newborn outcomes. Results There was a significant difference in epidural use between the 2 groups: study group (23.9%) standard care (68.7%; risk ratio (RR) 0.37 (95% CI 0.25 to 0.55), p≤0.001). The study group participants reported a reduced rate of augmentation (RR=0.54 (95% CI 0.38 to 0.77), p<0.0001); caesarean section (RR=0.52 (95% CI 0.31 to 0.87), p=0.017); length of second stage (mean difference=−0.32 (95% CI −0.64 to 0.002), p=0.05); any perineal trauma (0.88 (95% CI 0.78 to 0.98), p=0.02) and resuscitation of the newborn (RR=0.47 (95% CI 0.25 to 0.87), p≤0.015). There were no statistically significant differences found in spontaneous onset of labour, pethidine use, rate of postpartum haemorrhage, major perineal trauma (third and fourth degree tears/episiotomy), or admission to special care nursery/neonatal intensive care unit (p=0.25). Conclusions The Complementary Therapies for Labour and Birth study protocol significantly reduced epidural use and caesarean section. This study provides evidence for integrative medicine as an effective adjunct to antenatal education, and contributes to the body of best practice evidence. Trial registration number ACTRN12611001126909.

1 June 2013 in American Journal of Obstetrics and Gynecology
Verified
Journal Article
Closed access
CTCharlene Thornton
Charlene Thornton
HDHannah Dahlen
Hannah Dahlen
AKAndrew Korda
Andrew Korda
AHAnnemarie Hennessy
Annemarie Hennessy