Australian-born Women Research Articles

Ethnic differences in prevalence, risk factors, and perinatal outcomes of gestational diabetes mellitus: A comparison between immigrant ethnic Chinese women and Australian-born Caucasian women in Australia.

The prevalence of gestational diabetes mellitus (GDM) is increasing worldwide. Ethnic differences in risk factors and perinatal outcomes are clinically important. Chinese women constitute approximately 10% of the world's population, and are an increasing migrant population, yet prevalence, risk factors, and outcomes of GDM in this population are insufficiently explored. A retrospective study of a large pregnancy dataset comparing GDM prevalence, risk factors, and perinatal outcomes between immigrant ethnic Chinese women and Australian-born Caucasian women was conducted using logistic regression. Overall, 73 517 births were extracted from the pregnancy databases of two of Australia's largest maternity services. Chinese women (n = 3419) had a 4-fold higher risk of GDM than Caucasians (n = 28 594) after adjusting for risk factors of GDM. A past history of GDM (adjusted odds ratio [aOR] 5.24; 95% confidence interval [95% CI] 2.91-9.42] was the main GDM risk factor in both groups. Other GDM risk factors varied between groups. Perinatal outcomes in Chinese women with and without GDM were similar, except for neonatal hypoglycemia (aOR 2.01; 95% CI 1.14-3.56]. Caucasian women with GDM had more adverse perinatal outcomes than women without GDM. After adjusting for confounders, Chinese women with GDM had a lower risk of labor induction, large-for-gestational-age babies, neonatal hypoglycemia, respiratory distress, and low Apgar scores than Caucasian women with GDM. Differences in prevalence, risk profile, and adverse outcomes in GDM were evident between ethnic Chinese and Caucasian women. A precision medicine approach to GDM may be warranted considering ethnicity and individual risk profiles rather than a one-size-fits-all approach.

Common maternal health problems among Australian-born and migrant women: A prospective cohort study.

BackgroundMigrant women of non-English speaking background make up an increasing proportion of women giving birth in high income countries, such as Australia, Canada and the United Kingdom. The aim of this study was to assess the prevalence of common physical and psychosocial health problems during pregnancy and up to 18 months postpartum among migrant women of non-English speaking background compared to Australian-born women.MethodsProspective pregnancy cohort study of 1507 nulliparous women. Women completed self-administered questionnaires or telephone interviews in early and late pregnancy and at 3, 6, 9, 12 and 18 months postpartum. Standardised instruments were used to assess incontinence, depressive symptoms and intimate partner violence.FindingsMigrant women of non-English speaking background (n = 243) and Australian-born mothers (n = 1115) reported a similar pattern of physical health problems during pregnancy and postpartum. The most common physical health problems were: exhaustion, back pain, constipation and urinary incontinence. Around one in six Australian-born women (16.9%) and more than one in four migrant women (22.5%) experienced intimate partner abuse in the first 12 months postpartum. Compared to Australian-born women, migrant women were more likely to report depressive symptoms at 12 and 18 months postpartum.ConclusionPhysical and mental health problems are common among women of non-English speaking background and Australian-born women, and frequently persist up to 18 months postpartum. Migrant women experience a higher burden of postpartum depressive symptoms and intimate partner violence, and may face additional challenges accessing appropriate care and support.

Longitudinal nutritional changes in aging Australian women.

The importance of diet for the maintenance of health during aging is attracting a growing body of research interest. Given dietary intakes, along with BMI, are substantial contributors to disease burden, this study aimed to investigate prospective changes in dietary patterns and nutrient intakes in a sample of mid to late-life women over 14 years. Participants were from the Women's Healthy Ageing Project (WHAP); a longitudinal cohort of Australian-born women within the Melbourne metropolitan area. 173 participants were included in this analysis, their mean age in 1998 was 55 years (range 51-62) and in 2012 was 70 years (range 66-76). Diet was assessed using the Dietary Questionnaire for Epidemiological Studies Version 2 in 1998 and 2012. Nutritional intakes, Dietary Inflammatory Index (DII®) scores, Mediterranean Diet (MD) scores, sociodemographic and physical measures were calculated for all participants at both time points. Energy intake was found to significantly decrease over time (p<0.005). Energy-adjusted (i.e., energy density) total fat, saturated fat, monounsaturated fat and cholesterol intakes increased over time (all p<0.002), while energy-adjusted and absolute carbohydrate intake decreased (p<0.002). Adherence to the MD decreased over time (p<0.001) whilst DII scores increased slightly over time, although this result was not significant. This study shows significant changes in the intake of energy and several nutrients in a cohort of aging Australian women in the Melbourne metropolitan area over a period of 14 years. Between 1998 and 2012, changes in indices reflecting overall diet were consistently in the direction of a poorer diet.

Self-management of gestational diabetes among Chinese migrants: A qualitative study

BackgroundGestational diabetes mellitus is one of the most common complications of pregnancy. Women with Gestational diabetes are at increased risk of serious health outcomes, such as pre-eclampsia, obstructed labor, and the development of Type 2 diabetes later in life. Chinese migrants, the third largest cultural group in Australia, are more likely to develop Gestational diabetes than Australian-born women. However, to date, Gestational diabetes self-management has not been investigated in this population. AimTo explore the understanding and self-management experiences of Gestational diabetes among Chinese migrants. MethodsData were collected through individual semi-structured face-to-face interviews. Participants were recruited from the antenatal clinic at the Royal Prince Alfred Hospital. Interviews were audio-recorded, transcribed verbatim and thematically analyzed. FindingsAlthough the majority of participants demonstrated a good understanding of Gestational diabetes, some did not understand the principles behind healthcare advice and faced challenges in self-management. Confusion about self-monitoring of blood glucose and fear of insulin were also evident. Participants relied on both formal and informal sources of information. Some had difficulty obtaining adequate support. Cultural influences on self-management included meeting family needs, Chinese diet and use of Chinese medicines. ConclusionTo assist Chinese women with Gestational diabetes to better self-manage their condition, there is a need for clinicians to: (1) provide more effective diabetes education to ensure clear understanding of self-management principles; (2) actively elicit and respond to women’s confusion and concerns; (3) provide women with adequate practical support; and (4) develop greater cultural awareness.

Stillbirth in Western Australia, 2005-2013: the influence of maternal migration and ethnic origin.

To investigate prevalence rates and the risk of ante- and intrapartum stillbirth in Western Australia with respect to maternal country of birth and ethnic origin. Whole population retrospective cohort analysis of de-identified, linked routinely collected birth, perinatal and mortality data for all births to non-Indigenous women in WA during 2005-2013. Crude and adjusted odds ratios (aORs) with 95% confidence intervals were estimated by logistic regression and adjusted for confounding factors, for all stillbirths, antepartum stillbirths and intrapartum stillbirths, stratified by migrant status and ethnic background (white, Asian, Indian, African, Māori, other). Women born overseas were more likely to have a stillbirth than Australian-born women (aOR, 1.26; 95% CI, 1.09-1.37). There was no significant difference for any type of stillbirth between Australian-born women of white and non-white backgrounds, but non-white migrant women were more likely than white migrants to have a stillbirth (OR, 1.42; 95% CI, 1.19-1.70). Compared with Australian-born women, migrants of Indian (aOR, 1.71; 95% CI, 1.17-2.47), African (aOR, 2.12; 95% CI, 1.46-3.08), and "other" ethnic origins (aOR, 1.43; 95% CI, 1.06-1.93) were more likely to have antepartum stillbirths; women of African (aOR, 5.08; 95% CI, 3.14-8.22) and "other" (aOR, 1.86; 95% CI, 1.15-3.00) background were more likely to have an intrapartum stillbirth. Immigrants of African or Indian background appear to be at greater risk of ante- and intrapartum stillbirth in WA. Specific strategies are needed reduce the prevalence of stillbirth in these communities.

Postnatal care in the home: assessment and care of the jaundiced newborn at home

Understanding the prevalence of, and factors associated with, caesarean birth among immigrant populations is essential for appropriate antenatal and postnatal resource allocation.To compare rates of caesarean birth between one of the largest immigrant populations of women giving birth in Australia (Vietnamese-born women) with those of Australian-born women and investigate the odds of unplanned caesarean in these women, controlling for maternal characteristics, pregnancy complications and labour management factors.Cross-sectional analysis of data on singleton births in Victoria, Australia; using data from the routinely collected Victorian Perinatal Data Collection. Descriptive analyses comparing maternal and obstetric factors for Vietnamese-born women with Australian-born women were undertaken. Using the more recent nine years of routinely collected data, multivariable logistic regression explored the association between unplanned caesarean birth and maternal country of birth, adjusted for maternal and obstetric factors, admission status and time (n = 468,131). This association was also explored for ‘standard primiparae’ (n = 69,039).Planned and unplanned caesarean births increased dramatically in both Australian-born and Vietnamese-born women between 1984 and 2007. After adjustment for obstetric and maternal factors, Vietnamese-born women were at greater odds of an unplanned caesarean birth compared to Australian-born women (adjusted odds ratio = 1.32, 95% confidence interval = 1.25–1.40). These greater odds were also found among the ‘standard primiparae’ (adjusted odds ratio = 1.22, 95% confidence interval = 1.07–1.40).Factors other than clinical risk appear to predispose Vietnamese-born women to unplanned caesarean birth. These may include intrapartum communication, length of residence and familiarity with care systems, and variations in care practices for Vietnamese women.

Differences in meconium stained amniotic fluid in an Australian population: A retrospective study

BackgroundMeconium stained amniotic fluid commonly occurs postdates ( >40 weeks gestation) indicating fetal maturity. Previous literature indicates that different ethnicities mature at different rates. AimTo compare the rate of meconium stained amniotic fluid of Australian-born and non-Australian born women. MethodsA retrospective correlation study design was implemented, using data collected in the birth outcomes system at one tertiary hospital. Data was collected from all women who gave birth to a term (>/=37 weeks gestation), singleton, liveborn baby between January 1st to December 31st, 2014. Maternal country of birth was used for comparison. Categorical data was analyzed using Chi-Square test for Independence. Continuous variables were assessed for normality, and differences were compared using an Independent t-test or a Mann–Whitney U test. All tests were two-tailed and p<0.05 was considered statistically significant. Results3,041 women were included; 1131 Australian-born and 1910 non-Australian born. Meconium stained amniotic fluid occurred more frequently in non-Australian born women compared to Australian-born women (23.5% vs. 19.8 p=0.02). Their babies were significantly smaller (Mean=3265g, Standard Deviation 463.8 vs Mean=3442g, Standard Deviation 499.2, p<0.001), with no difference in gestational length (Mean=39.4, Standard Deviation 1.28 vs Mean=39.5, Standard Deviation 1.18, p=0.06). Increasing gestational age had the strongest association with meconium stained amniotic fluid; >/=42 weeks gestation occurring 3.52 (95% Confidence Interval: 2.00, 6.22, p=<0.001) more than <40 weeks gestation. ConclusionMaternity health services should record ethnicity and region of birth to provide individualised care as women born overseas often have poorer perinatal outcomes when compared to Australian-born women.

Risk of unplanned caesarean birth in Vietnamese-born women in Victoria, Australia: A cross-sectional study

BackgroundUnderstanding the prevalence of, and factors associated with, caesarean birth among immigrant populations is essential for appropriate antenatal and postnatal resource allocation. AimsTo compare rates of caesarean birth between one of the largest immigrant populations of women giving birth in Australia (Vietnamese-born women) with those of Australian-born women and investigate the odds of unplanned caesarean in these women, controlling for maternal characteristics, pregnancy complications and labour management factors. MethodsCross-sectional analysis of data on singleton births in Victoria, Australia; using data from the routinely collected Victorian Perinatal Data Collection. Descriptive analyses comparing maternal and obstetric factors for Vietnamese-born women with Australian-born women were undertaken. Using the more recent nine years of routinely collected data, multivariable logistic regression explored the association between unplanned caesarean birth and maternal country of birth, adjusted for maternal and obstetric factors, admission status and time (n=468,131). This association was also explored for ‘standard primiparae’ (n=69,039). FindingsPlanned and unplanned caesarean births increased dramatically in both Australian-born and Vietnamese-born women between 1984 and 2007. After adjustment for obstetric and maternal factors, Vietnamese-born women were at greater odds of an unplanned caesarean birth compared to Australian-born women (adjusted odds ratio=1.32, 95% confidence interval=1.25–1.40). These greater odds were also found among the ‘standard primiparae’ (adjusted odds ratio=1.22, 95% confidence interval=1.07–1.40). ConclusionFactors other than clinical risk appear to predispose Vietnamese-born women to unplanned caesarean birth. These may include intrapartum communication, length of residence and familiarity with care systems, and variations in care practices for Vietnamese women.

Differences in food and nutrient intakes between Australian- and Asian-born women living in Australia: Results from the Australian Longitudinal Study on Women's Health.

To determine differences in food and nutrient intakes between Australian- and Asian-born women living in Australia. Data were obtained from the Australian Longitudinal Study on Women's Health, including 6461 women born in Australia or Asia who completed food frequency questionnaires in 2001 and 2013. Diet was assessed using the Dietary Questionnaire for Epidemiological Studies version 2. Longitudinal generalised estimating-equation modelling was performed to determine the effect of country of birth and survey year on fruit and vegetable intake. Asian-born women ate more cereals, soybeans and fish but less vegetables, legumes, dairy, meat and meat products than Australian-born women both in 2001 and in 2013. Asian-born women ate less cereals, rice and noodles, meat and its products (P < 0.05) in 2013 than in 2001. The earlier people came to Australia, the less their rice and noodle intake per day. However, the reverse was demonstrated regarding vegetable intake. Asian-born women had a lower daily intake of fat, calcium, zinc, thiamin, riboflavin, folate and retinol compared with those born in Australia. Asian-born women living in Australia show different food and nutrient intakes from Australian-born women, although their diets tend to deviate from typical Asian characteristics and approach a Western diet.

Determinants of breastfeeding initiation among mothers in Sydney, Australia: findings from a birth cohort study

BackgroundBreastfeeding has short-term and long-term benefits for both the infant and the mother. The objective of this study was to identify the incidence of breastfeeding initiation among women in South Western Sydney, and the factors associated with the initiation of breastfeeding.MethodsChild and Family Health Nurses recruited mother-infant dyads (n = 1035) to the Healthy Smiles Healthy Kids birth study in South Western Sydney, an ethnically and socio-economically diverse area, at the first post-natal home visit. A sample of 935 women completed a structured, interviewer-administered questionnaire at 8 weeks. Multivariate logistic regression analysis was used to identify those factors independently associated with the initiation of breastfeeding.ResultsIn total, 92% of women (n = 860) commenced breastfeeding in hospital. Women who completed a university degree were more likely to initiate breastfeeding compared to those who did not complete high school (AOR = 7.16, 95% CI 2.73, 18.79). Vietnamese women had lower odds of breastfeeding initiation compared to Australian born women (AOR = 0.34. 95% CI 0.13, 0.87). Women who had more than one child were less likely to breastfeed than those who had one child (AOR = 0.38, 95% CI 0.19, 0.79). Women who gave birth via a caesarean section were less likely to breastfeed their baby compared to those who had a vaginal delivery (AOR = 0.27, 95% CI 0.14, 0.52). Women who drank alcohol during pregnancy had 72% lower odds to breastfeed compared to those who did not drink alcohol during pregnancy (AOR = 0.28, 95% CI 0.11, 0.71). Women who reported that their partner preferred breastfeeding were more likely to initiate breastfeeding (AOR = 11.77, 95% CI 5.73, 24.15) and women who had chosen to breastfeed before pregnancy had more than 2.5 times the odds of breastfeeding their baby compared to those women who made their decision either during pregnancy or after labour (AOR = 2.80, 95% CI 1.31, 5.97).ConclusionsWomen with lower levels of education, who consume alcohol during pregnancy, have more than one child, and make infant feeding decision after becoming pregnant, and those born in Vietnam should be targeted when implementing breastfeeding promotion programs. Further, women who deliver by caesarean section require additional breastfeeding support post-delivery and it is important to include fathers in breastfeeding related decisions and encourage them to participate in antenatal programs.

Trends in the prevalence of hepatitis B infection among women giving birth in New South Wales.

To evaluate the effect of targeted and catch-up hepatitis B virus (HBV) vaccination programs in New South Wales on HBV prevalence among women giving birth for the first time. Observational study linking data from the NSW Perinatal Data Collection for women giving birth during 2000-2012 with HBV notifications in the NSW Notifiable Conditions Information Management System. HBV prevalence in Indigenous Australian, non-Indigenous Australian-born, and overseas-born women giving birth. Of 482 944 women who gave birth to their first child, 3383 (0.70%) were linked to an HBV notification. HBV prevalence was 1.95% (95% CI, 1.88-2.02%) among overseas-born women, 0.79% (95% CI, 0.63-0.95%) among Indigenous Australian women, and 0.11% (95% CI, 0.09-0.12%) among non-Indigenous Australian-born women. In Indigenous Australian women, prevalence was significantly lower for those who had been eligible for inclusion in the targeted at-risk newborn or universal school-based vaccination programs (maternal year of birth, 1992-1999: 0.15%) than for those who were not (born ≤ 1981: 1.31%; for trend, P <0.001). There was no statistically significant downward trend among non-Indigenous Australian-born or overseas-born women. HBV prevalence was higher among Indigenous women residing in regional and remote areas than those in major cities (adjusted odds ratio [aOR], 2.23; 95% CI, 1.40-3.57), but lower for non-Indigenous (aOR, 0.39; 95% CI, 0.28-0.55) and overseas-born women (aOR, 0.61; 95% CI, 0.49-0.77). Among women giving birth, there was a significant reduction in HBV prevalence in Indigenous women associated with the introduction of the HBV vaccination program in NSW, although prevalence remains higher than among non-Indigenous Australian-born women, and it also varies by region of residence. Continuing evaluation is needed to ensure that the prevalence of HBV infections continues to fall in Australia.

Trial of labour and vaginal birth after previous caesarean section: A population based study of Eastern African immigrants in Victoria, Australia

ObjectivesVariations in caesarean section (CS) between some immigrant groups and receiving country populations have been widely reported. Often, African immigrant women are at higher risk of CS than the receiving population in developed countries. However, evidence about subsequent mode of birth following CS for African women post-migration is lacking. The objective of this study was to examine differences in attempted and successful vaginal birth after previous caesarean (VBAC) for Eastern African immigrants (Eritrea, Ethiopia, Somalia and Sudan) compared with Australian-born women. DesignA population-based observational study was conducted using the Victorian Perinatal Data Collection. Pearson's chi-square test and logistic regression analysis were performed to generate adjusted odds ratios for attempted and successful VBAC. SettingVictoria, Australia. Participants554 Eastern African immigrants and 24,587 Australian-born eligible women with previous CS having singleton births in public care. Findings41.5% of Eastern African immigrant women and 26.1% Australian-born women attempted a VBAC with 50.9% of Eastern African immigrants and 60.5% of Australian-born women being successful. After adjusting for maternal demographic characteristics and available clinical confounding factors, Eastern African immigrants were more likely to attempt (ORadj 1.94, 95% CI 1.57–2.47) but less likely to succeed (ORadj 0.54 95% CI 0.41–0.71) in having a VBAC. Conclusion/Implications for practiceThere are disparities in attempted and successful VBAC between Eastern African origin and Australian-born women. Unsuccessful VBAC attempt is more common among Eastern African immigrants, suggesting the need for improved strategies to select and support potential candidates for vaginal birth among these immigrants to enhance success and reduce potential complications associated with failed VBAC attempt.

Variations in first-time caesarean birth between Eastern African immigrants and Australian-born women in public care: A population-based investigation in Victoria.

Caesarean section (CS) rates are known to vary by country, migration status and social group. However, little population-based, confounder adjusted evidence exists on caesarean rate for African immigrants in Australia. To investigate disparities in first-time caesarean, mainly unplanned caesarean in labour for women born in Eritrea, Ethiopia, Somalia and Sudan relative to Australian-born women in public care. A population-based study of 237 943 Australian and 4057 Eastern African singleton births between 1999 and 2007, was conducted using Victorian Perinatal Data Collection. Descriptive and multivariable logistic regression analysis by parity, adjusting for confounders selected a priori, was performed for first-time unplanned caesarean in labour and overall caesarean. Primiparae born in each of the Eastern African countries had elevated odds of unplanned caesarean in labour: Eritrea adjusted odds ratio (ORadj ) 2.04 95% CI (1.41, 2.97), Ethiopia ORadj 2.08 95% CI (1.62, 2.68), Somalia ORadj 1.62 95% CI (1.25, 2.10) and Sudan ORadj 1.39 95% CI (1.03, 1.87). Similarly, multiparae from Eastern African countries had elevated odds of unplanned caesarean in labour: Eritrea ORadj 2.13 95%CI(1.15, 3.97), Ethiopia ORadj 2.05 95% CI (1.38, 3.03), Somalia ORadj 2.16 95% CI (1.69, 2.77) and Sudan ORadj 1.81 95% CI (1.32, 2.49). The odds of any first-time caesarean (planned or unplanned) were elevated for primiparae born in all countries except Sudan and for multiparae born in Ethiopia and Somalia. We observed substantial variations in a first-time CS between Eastern African and Australian-born women in Victoria, Australia. However, these disparities were unexplained by socio-demographic and clinical risks, suggesting the potential importance of other factors such as communication difficulties, support systems for immigrant pregnant women and possible differences in care.

Sublingual misoprostol for management of empty sac or missed miscarriage: The first twoyears' experience at a metropolitan Australian hospital.

Misoprostol management of miscarriage is only now becoming widely used in Australia. To review the efficacy, safety and the popularity of outpatient sublingual misoprostol in empty sac/missed miscarriage management over its first twoyears of availability in a metropolitan Australian hospital. A retrospective cohort review was undertaken of women choosing sublingual misoprostol 600μg (three tablets)×three doses for miscarriage management. Principal outcomes assessed were miscarriage resolution without the need for curettage and complications. Additionally, the relative popularity of misoprostol versus surgery by place of birth and over time, and the return of pregnancy tissue for histology were analysed. Between 1 December 2012 and 30 November 2014, 279 women chose sublingual misoprostol for nonurgent miscarriage management, while 420 chose surgery (40 and 60%, respectively). Of the misoprostol cohort, 269 had complete data; 239 of 269 (88.8%) had resolution without curettage, nine (3.3%) had acute curettage, 21 (7.8%) had nonacute curettage, 30 (11.15%) had unplanned emergency department presentation, 11 (4.1%) had unplanned admission, three (1.1%) had blood transfusion and one (0.4%) had an infection requiring admission. Misoprostol was as popular with Australian-born as overseas-born women; 53.5% of patients returned histopathology specimens; one (0.7%) demonstrated partial hydatidiform mole. Outpatient management of missed/empty gestational sac miscarriage using sublingual misoprostol is associated with a high rate of avoiding curettage and the low rate of complication. It is equally popular with Australian-born and overseas-born women. Just over 50% returned pregnancy tissue for analysis.

Perinatal health outcomes of East African immigrant populations in Victoria, Australia: a population based study.

BackgroundSub-Saharan African women are often treated as a single group in epidemiological studies of immigrant birth outcomes, potentially masking variations across countries.MethodsCross-sectional population-based study of 432,567 singleton births in Victoria, Australia comparing mothers born in one of four East African countries (453 Eritreans, 1094 Ethiopians, 1,861 Somali and 1,404 Sudanese) relative to 427,755 Australian-born women was conducted using the Victorian Perinatal Data Collection. Pearson’s chi-square test and logistic regression analyses were performed to investigate disparities and estimate risks of perinatal mortality and other adverse perinatal outcomes after adjustment for confounders selected a priori.ResultsCompared with mothers born in Australia, East African immigrants as a group had elevated odds of perinatal mortality (ORadj1.83, 95 % CI 1.47, 2.28), small for gestational age births (SGA) (ORadj1.59 95 % CI 1.46, 1.74), very low birthweight (ORadj1.33, 95 % CI 1.11, 1.58) and very preterm birth (ORadj1.55, 95 % CI 1.27, 1.90). However, they had lower odds of preterm birth (ORadj0.86 95 % CI 0.76, 0.98) and macrosomia (ORadj0.65 95 % CI 0.51, 0.83). Individual country of birth analyses indicated significant variations, with Eritrean women having higher odds of very low birthweight (ORadj1.80, 95 % CI 1.09, 2.98), very preterm birth (ORadj 1.96, 95 % CI 1.08, 3.58), small for gestational age births (ORadj 1.52, 95 % CI 1.14, 2.03) and perinatal mortality (ORadj 2.69, 95 % CI 1.47, 4.91). Sudanese women had higher odds of low birthweight (ORadj 1.36, 95 % CI 1.10, 1.68), very low birthweight (ORadj 1.53, 95 % CI 1.13, 2.07), very preterm birth (ORadj 1.78, 95 % CI 1.26, 2.53), small for gestational age births (ORadj 2.13, 95 % CI 1.84, 2.47) and perinatal mortality (ORadj 2.10, 95 % CI 1.44, 3.07)]. Ethiopian women differed from Australian-born women only in relation to higher odds of very preterm birth, (ORadj1.70 95 % CI 1.16, 2.50), and only Somali-women had significantly lower odds of preterm birth (ORadj0.70 95 % CI 0.56, 0.88).ConclusionsOverall, East African countries of birth were associated with increased perinatal death and some adverse perinatal outcomes; suggesting the need for strategies to enhance surveillance and health care delivery for these women. Analysis by individual country of birth groups has shown women from Eritrea and Sudan are particularly at increased risk of adverse outcomes, demonstrating the importance of antenatal identification of maternal country of birth.Electronic supplementary materialThe online version of this article (doi:10.1186/s12884-016-0886-z) contains supplementary material, which is available to authorized users.

Assortative sexual mixing among heterosexuals in Australia: implications for herd protection in males from a female human papillomavirus vaccination program.

The aim was to investigate the assortative sexual mixing by country of birth among heterosexuals in Australia. An analysis of 1060 heterosexual couples who attended the Melbourne Sexual Health Centre between 2011 and 2014 was conducted. Of the 1060 couples, 27% (n = 281) were both Australian-born men and women, and 42% (n = 445) were both overseas-born. Of the 171 couples with women aged ≤21 years, 41% (n = 70) were both born in Australia and 33% (n = 56) were both born overseas. A strong assortative mixing pattern by country of birth was observed among all 1060 couples (r = 0.361; 95% CI: 0.320-0.403), and among 171 couples with women aged ≤21 years (r = 0.481; 95% CI: 0.379-0.584).

Association between sexual mixing and genital warts in heterosexual men in Australia: the herd protection from the female human papillomavirus vaccination program.

Australian-born women aged ≤32 years were eligible for the free female human papillomavirus (HPV) vaccination program introduced in 2007. A total of 1165 heterosexual couples attending the Melbourne Sexual Health Centre between 2011 and 2014 were included in this analysis. Findings showed the odds of having penile warts was 0.52-fold lower among men who had a female partner aged ≤32 years compared with men who had a female partners aged >32 years. This suggests men would have received herd protection from their female partners and hence they are at lower risk of acquiring genital warts.

Obstetric and psychosocial risk factors for Australian-born and non-Australian born women and associated pregnancy and birth outcomes: a population based cohort study.

BackgroundOne in four Australians is born overseas and 47 % are either born overseas or have a parent who was. Obstetric and psychosocial risk factors for these women may differ.MethodData from one Sydney hospital (2012–2013) of all births recorded in the ObstetriX™ database were analysed (n = 3,092). Demographics, obstetric and psychosocial risk profile, obstetric interventions and complications and selected maternal and neonatal outcomes were examined for women born in Australia and overseas.ResultsWomen born in Australia were younger, more likely to be primiparous (28.6 v 27.5 %), be obese (32.0 % v 21.4 %), smoke (19.7 % v 3.0 %), have an epidural (26.2 % v 20.2 %) and were less likely to have gestational diabetes mellitus (GDM) (6.8 % v 13.7 % when compared to non-Australian born women. The highest rates of GDM, Gestational Hypertension (GH) and maternal anaemia were seen in women born in China, the Philippines and Pakistan respectively. Differences were also seen in psychosocial screening between Australian and non-Australian women with Australian-born women more likely to smoke and report a mental health disorder. There was an association between having an Edinburgh Postnatal Depression Scale (EPDS) ≥ 13 and other psychosocial issues, such as thoughts of self-harm, domestic violence, childhood abuse etc. These women were also less likely to breastfeed. Women with an EPDS ≥ 13 at booking compared to women with EPDS ≤12 had a higher chance of being diagnosed with GDM (AOR 1.85 95 % CI 1.14–3.0).ConclusionsThere are significant differences in obstetric and psychosocial risk profiles and maternal and neonatal outcomes between Australian-born and non-Australian born women. In particular there appears to be an association between an EPDS of ≥13 and developing GDM, which warrants further investigation.

Ethnicity or cultural group identity of pregnant women in Sydney, Australia: Is country of birth a reliable proxy measure?

Australia has one of the most ethnically and culturally diverse maternal populations in the world. Routinely few variables are recorded in clinical data or health research to capture this diversity. This paper explores how pregnant women, Australian-born and overseas-born, respond to survey questions on ethnicity or cultural group identity, and whether country of birth is a reliable proxy measure. As part of a larger study, pregnant women attending public antenatal clinics in Sydney, Australia, completed a survey about their knowledge and expectations of pregnancy duration. The survey included two questions on country of birth, and identification with an ethnicity or cultural group. Country of birth data were analysed using frequency tabulations. Responses to ethnicity or cultural group were analysed using inductive coding to identify thematic categories. Among the 762 with 75 individual cultural groups or ethnicities and 68 countries of birth reported. For Australian-born women (n=293), 23% identified with a cultural group or ethnicity, and 77% did not. For overseas-born women (n=469), 44% identified with a cultural group or ethnicity and 56% did not. Responses were coded under five thematic categories. Ethnicity and cultural group identity are complex concepts; women across and within countries of birth identified differently, indicating country of birth is not a reliable measure. To better understand the identities of the women receiving maternity care, midwives, clinicians and researchers have an ethical responsibility to challenge practices that quantify cultural group or ethnicity, or use country of birth as a convenient proxy measure.

O16.1 The rapid and near elimination of human papillomavirus (hpv) type 6, 11, 16 and 18 among young high-risk women within three years of the national hpv vaccination programme in australia: findings from a 10-year cross-sectional study

Introduction The national quadrivalent human papillomavirus (HPV) vaccination programme was launched in Australia in April 2007. The aim of this study was to explore the proportion of vaccine targeted HPV genotypes contained in the quadrivalent (4vHPV) and the nine-valent (9vHPV) vaccines detected among young women diagnosed with Chlamydia trachomatis . Methods Women ≤25 years attending Melbourne Sexual Health Centre from 1-July-2004 to 30-June-2014 and diagnosed with chlamydia were included in the analysis. Detection of HPV genotypes was performed on stored cervical or high vaginal samples. The proportions of women who had 4vHPV types (6/11/16/18) and the other five types within the 9vHPV grouping (31/33/45/52/58 alone) excluding 4vHPV types were calculated for each Australian financial year and stratified by age and vaccine eligibility. The proportions of HPV types among unvaccinated women in the post-vaccination period were also calculated to assess herd protection. Results A total of 1,202 women were included in this study. The proportion of samples with 4vHPV types dramatically decreased among Australian-born ≤25 year old females over the 10 year period (6/11 decreased from 16% to 2% [ p trend p trend p = 0 .031), but no decline was seen in the other five types within the 9vHPV grouping (22.5% vs. 25.9%; p = 0 .805). Conclusion Coverage achieved using the 3-dose vaccine was sufficient to largely eradicate 4vHPV types in Australian born women ≤21 years old, within three years of the introduction of the national HPV vaccination program. A strong herd protection was observed among women, with a significant decline in the proportion of 4vHPV in unvaccinated women. Disclosure of interest statement EPFC has received a conference sponsorship from CSL Biotherapies. CKF has received honoraria from CSL Biotherapies and Merck and research funding from CSL Biotherapies. CKF owns shares in CSL Biotherapies the manufacturer for Gardasil. SNT and SMG are investigators on a national prevalence study of cervical cancer tissue that is receiving unrestricted funding from bioCSL, supplier of HPV vaccine in Australia. SMG has received grant support from CSL and GlaxoSmithKline, and lecture fees from Merck, GSK and Sanofi Pasteur; in addition, she has received funding through her institution to conduct HPV vaccine studies for Merck Sharp and Dohme and GlaxoSmithKline. SMG is a member of the Merck Global Advisory Board and the Merck Scientific Advisory Committee for HPV. MYC has been an investigator on investigator initiated research grants from Merck Sharp and Dohme. MGL receives unrestricted grants from Boehringer Ingelhiem, Gilead Sciences, Merck Sharp and Dohme, Bristol-Myers Squibb, Janssen-Cilag, ViiV HealthCare. All other authors have no conflicts of interest.