Are Social Status and Migration Background Associated with Utilization of Non-medical Antenatal Care? Analyses from Two German Studies.

OBJECTIVE: Non-medical antenatal care (ANC) refers to a range of non-medical services available to women during pregnancy aiming at supporting women and prepare them for the birth and the postpartum period. In Germany, they include antenatal classes, breastfeeding classes and pregnancy-specific yoga or gymnastics courses. Studies suggest that various types of non-medical ANC carry benefits for both the women and their babies. Little is known about the uptake of non-medical ANC among different socioeconomic population subgroups, but one may expect lower utilization among socio-economically disadvantaged women. We analyzed factors contributing to the utilization of non-medical ANC in general and antenatal classes in particular. METHODS: Baseline data of the Bielefeld BaBi birth cohort (2013-2016) and the Berlin perinatal study (2011-2012) were analyzed. Comparing the two cohorts allowed to increase the socio-economic and migration background variance of the study population and to capture the effect of the local context on uptake of services. Multivariate logistic regression analyses were performed to study associations between the uptake of non-medical ANC and socio-economic and migration status. RESULTS: In Berlin and Bielefeld, being a first generation migrant and having lower levels of education were associated with lower non-medical ANC uptake. In Berlin, being a 2nd generation woman or having a low income was also associated with lower uptake. CONCLUSIONS FOR PRACTICE: Our study suggests that non-medical ANC remains in some part the prerogative of non-migrant, well-educated and economically privileged women. Since differences in non-medical ANC have the potential to create inequalities in terms of birth outcomes and maternal health during pregnancy and post-partum, more efforts are needed to promote the use of non-medical ANC by all population groups.

[How does the Degree of Acculturation Influence the Intention to Breastfeed, Breastfeeding Frequency, and Breastfeeding Duration in Migrant Women? A Review of the Publications from 2014-2018]. / Wie beeinflusst der Akkulturationsgrad Stillabsicht, Stillhäufigkeit und Stilldauer bei Migrantinnen? Ein Review der Publikationen der Jahre 2014­2018.

The breastfeeding behavior of women is influenced by social, demographic and cultural factors, yet little is known about the influence of migration and acculturation. A systematic search using the electronic databases LIVIVO and MEDLINE (PubMed) was conducted followed by a manual search in the bibliographies of all selected articles. Quantitative studies from industrialized countries, published from 01.01.2014 to 30.05.2018, in English or German were included. A total of 77 studies could be identified; 17 of them met the required inclusion criteria. Migrant mothers, excluding those from Southeast Asia, tended to have a higher breastfeeding prevalence than mothers without a migrant background. In addition, migrant women in Southern Europe, Ireland, and Taiwan were observed to have a longer breastfeeding period, whereas migrant women in Canada and women of non-Scandinavian origin in northern Europe showed shorter breastfeeding duration. With increasing acculturation, there was also a tendency of decreased breastfeeding apparent in women with a migrant background.

Do social factors and country of origin contribute towards explaining a "Latina paradox" among immigrant women giving birth in Germany?

BACKGROUND: The "Latina paradox" describes the unexpected association between immigrant status, which is often correlated to low socioeconomic status, and low prevalence of unfavourable birth outcomes. Social (e.g. culture, religion) and/or non-social factors related to country of origin are potentially responsible for this paradox. METHODS: Questionnaire survey of 6413 women delivering in three large obstetric hospitals in Berlin (Germany) covering socioeconomic and migration status, country of origin (Turkey, Lebanon), and acculturation. Data was linked with routine obstetric data. Logistic regressions were performed to assess the effect of acculturation, affinity to religion and country of origin on preterm birth and small-for-gestational-age (SGA). RESULTS: Immigrant women with a low level of acculturation (reference) were less likely to have a preterm birth than those who were highly acculturated (aOR: 1.62, 95%CI: 1.01-2.59), as were women from Turkey compared to non-immigrants (aOR: 0.49, 95%CI: 0.33-0.73). For SGA, we found no epidemiologic paradox; conversely, women from Lebanon had a higher chance (aOR: 1.72, 95%CI: 1.27-2.34) of SGA. Affinity to religion had no influence on birth outcomes. CONCLUSIONS: There is evidence that low acculturation (but not affinity to religion) contributes towards explaining the epidemiologic paradox with regard to preterm birth, emphasising the influence of socioeconomic characteristics on birth outcomes. The influence of Turkish origin on preterm birth and Lebanese origin on SGA suggests that non-social factors relating to the country of origin are also at play in explaining birth outcome differences, and that the direction of the effect varies depending on the country of origin and the outcome.

Advanced cervical dilatation as a predictor for low emergency cesarean delivery: a comparison between migrant and non-migrant Primiparae - secondary analysis in Berlin, Germany.

BACKGROUND: Cesarean rates are higher in women admitted to labor ward during early stages rather than at later stages of labor. In a study in Germany, crude cesarean rates among Turkish and Lebanese immigrant women were low compared to non-immigrant women. We evaluated whether these immigrant women were admitted during later stages of labor, and if so, whether this explains their lower cesarean rates. METHODS: We enrolled 1413 nulliparous women with vertex pregnancies, singleton birth, and 37+ week of gestation, excluding elective cesarean deliveries, in three Berlin obstetric hospitals. We applied binary logistic regression to adjust for social and obstetric factors; and standardized coefficients to rank predictors derived from the regression model. RESULTS: At the time of admission to labor ward, a smaller proportion of Turkish migrant women was in the active phase of labor (cervical dilation: 4+ cm), compared to women of Lebanese origin and non-immigrant women. Rates of cesarean deliveries were lower in women of Turkish and Lebanese origin (15.8 and 13.9%) than in non-immigrant women (23.9%). In the logistic regression analysis, more advanced cervical dilatation was inversely associated with the outcome cesarean delivery (OR: 0.76, 95%CI: 0.70-0.82). In addition, higher maternal age (OR: 1.06, 95%CI: 1.04-1.09), application of oxytocic agents (OR: 0.55, 95%CI: 0.42-0.72), and obesity (OR: 2.25, 95%CI: 1.51-3.34) were associated with the outcome. Ranking of predictors indicate that cervical dilatation is the most relevant predictor derived from the regression model. CONCLUSIONS: Advanced cervical dilatation at the time of admission to labor ward does not explain lower emergency cesarean delivery rates in Turkish and Lebanese migrant women, despite the fact that this is the strongest among the predictors for emergency cesarean delivery identified in this study.

Does the Degree of Acculturation Influence Breastfeeding Intention and Start or the Frequency of Early Weaning? Results of a Prospective Observational Study.

OBJECTIVES: Recent breastfeeding studies from immigration countries have found that acculturation factors influence breastfeeding behaviour in women with a migration background. To date, there has been no systematic investigation for Germany. Therefore, we study whether and how the degree of acculturation within a population of migrant women influences the start, time and duration of breastfeeding. PATIENT POPULATION AND METHODOLOGY: Pregnant women who were admitted to one of the three participating maternity clinics in Berlin for the birth of their child in the one-year study period were surveyed (including sociodemographic details, data on migration/acculturation). These women were interviewed again two or three days post partum (including start of breastfeeding, planned breastfeeding duration, reasons for not breastfeeding). In a subgroup, a telephone interview took place 6 months post partum about the actual breastfeeding duration, contraceptive behaviour post partum and availing of midwife services following delivery. Breastfeeding behaviour was analysed using multivariate regression models, among other things. RESULTS: The prepartum survey included 7100 women, 6884 women were contacted in the postnatal wards, and the subgroup six months after delivery comprised 605 women. No acculturation-related differences were found in the start of breastfeeding. In the adjusted model, a medium and higher degree of acculturation diminished the chance of planning a long breastfeeding period. More acculturated women show a greater risk of weaning within the first six months than less acculturated women. CONCLUSION: The degree of acculturation has relevant significance for some aspects of breastfeeding behaviour in women with a migration background. This should be considered both in breastfeeding promotion programmes and in further national breastfeeding studies.

[Influence of a Migration Background on the Implementation of Breastfeeding and Premature Weaning]. / Zum Einfluss eines Migrationshintergrundes auf die Umsetzung der Stillabsicht und ein vorzeitiges Abstillen.

QUESTIONS: Current studies on breastfeeding behavior that adequately consider migration aspects are not available from Germany. The following research questions should be answered with the help of a prospective study: What factors influence the probability of (premature) weaning and actual breastfeeding duration? What roles do migration background (MB) and generation play? Do observed effects persist after controlling for education, parity, etc.? PATIENT COHORT AND METHODOLOGY: In a one-year study in 3 Berlin maternity hospitals, women were interviewed on socio-demografic details and migration aspects on admission to the delivery room. On the 2nd / 3rd day postpartum, another standardized interview was conducted that included questions on the beginning of breastfeeding and planned breastfeeding period. Six months postpartum, a sub-cohort was interviewed by telephone or other means about the actual breastfeeding period. Nursing behavior was analyzed using multivariate regression models. A Cox regression was used to analyze actual breastfeeding duration and possible influencing factors. RESULTS: The pre-partum group included 7,100 women (57.9% with a migrant background), 6,884 women were interviewed on the maternity ward, and 605 women were in the sub-cohort questioned six months postpartum. 55.9% of first-generation migrant women, 32.9% of 2nd / 3rd-generation migrant women, and 52.9% of women with no MB were still breastfeeding 6 months postpartum (p<0.001). In the adjusted regression model, women with a migrant background were more likely to start breastfeeding than women with no MB. Cox's regression analysis examined the likelihood of breastfeeding within 6 months: The adjusted model showed no effect of migration status. CONCLUSION: The migration background factor has only a small influence on breastfeeding behavior. Possible differences should take the migration generation into account.

Obstetric care quality indicators and outcomes based on the degree of acculturation of immigrants-results from a cross-sectional study in Berlin.

HYPOTHESIS: Acculturation is a complex, multidimensional process involving the integration of the traditional norms, values, and lifestyles of a new cultural environment. It is, however, unclear what impact the degree of acculturation has on obstetric outcomes. METHODS: Data collection was performed in 2011 and 2012 at three obstetric tertiary centers in Berlin, Germany. Standardized interviews (20-30 min.) were performed with support of evaluated questionnaires. The primary collected data were then linked to the perinatal data recorded at the individual clinics provided from the obstetric centers which correspond with the routinely centralized data collected for quality assurance throughout Germany. The questionnaire included questions on sociodemographic, health care, and migrant-related aspects. Migrant women and women with a migration background were assessed using the Frankfurt Acculturation Scale, a one-dimensional measurement tool to assess the degree of acculturation (15 items on language and media usage as well as integration into social networks). RESULTS: In summary, 7100 women were available for the survey (response rate of 89.6%) of which 3765 (53%) had a migration background. The probability of low acculturation is significantly (p < 0.001) associated with a lower level of German knowledge, a shorter period of residence, and lower education. Pregnant women with a low acculturation also had a significantly greater chance of having the first booking visit after 9 weeks of pregnancy and fewer ultrasound examinations during pregnancy. There is no significant difference depending on the degree of acculturation for the frequency of elective and emergency cesarean sections. The results of the logistic regression analyses for the examination of possible relationships between the degree of acculturation and obstetric parameters show no significant differences for prematurity, 5 min.-Apgar values > 7, arterial umbilical cord pH values > 7.00 and admissions to the neonatal unit. CONCLUSIONS: In Berlin, among migrant women a low degree of acculturation may have an unfavorable effect on the utilization of pregnancy care provision. However, there were no relevant differences in obstetric outcome parameters in relation to the degree of acculturation within the migrant population of Berlin.

Comparing provision and appropriateness of health care between immigrants and non-immigrants in Germany using the example of neuraxial anaesthesia during labour: cross-sectional study.

OBJECTIVE: Research on health services for immigrants has mostly been concerned with access barriers but rarely with appropriateness and responsiveness of care. We assessed whether appropriateness and responsiveness of care depend on migration status, using provision of neuraxial anaesthesia (NA) during labour as indicator. In relation to their migration status, we analysed whether (1) women undergoing elective or secondary/urgent secondary caesarean sections (ESCS) appropriately receive NA (instead of general anaesthesia), (2) women delivering vaginally appropriately receive NA and (3) women objecting to NA, for example, for religious reasons, may deliver vaginally without receiving NA (provider responsiveness). DESIGN: Cross-sectional study. SETTING: Three obstetric hospitals in Berlin, Germany. METHODS: Questionnaire survey covering 6391 women with migration history (first and second generations) and non-immigrant women giving birth; data linkage with routine obstetric data. We assessed the effects of migrant status, German language proficiency, religion and education on the provision of NA (primary outcome) after adjusting for other maternal and obstetric parameters. RESULTS: The chance of receiving NA for elective/ESCS was independent of migrant status after controlling for confounding variables (adjusted OR (aOR) 0.93, 95% CI 0.65 to 1.33). In vaginal deliveries, first (but not second) generation women (aOR 0.79, 95% CI 0.65 to 0.95), women with low German language skills (aOR 0.77, 95% CI 0.58 to 0.99) and women with low educational attainment (aOR 0.62, 95% CI 0.47 to 0.82) had lower chances of receiving NA; there was no evidence of overprovision among women with strong affinity to Islam (aOR 0.77, 95% CI 0.63 to 0.94). CONCLUSIONS: We found evidence for underprovision of care among first-generation immigrants, among women with low German language proficiency and particularly among all women with low educational attainment, irrespective of migration status. There was no evidence for overprovision of care to immigrant women, either inappropriately (general anaesthesia for ESCS) or because of low provider responsiveness (no opt-out for NA in vaginal delivery).

Obstetric and perinatal outcomes among immigrant and non-immigrant women in Berlin, Germany.

BACKGROUND: In Germany, regular immigrants and their descendants have legal and financial access to health care equal to the general citizenry. Nonetheless, some of their health outcomes are comparatively unfavorable, and that is only partially explained by their lower socioeconomic status (SES). The aim of this study was to assess whether this disparity exists also for obstetric and perinatal outcomes. METHODS: We compared obstetric and perinatal outcomes between immigrant women (first or second generation) and non-immigrant women, delivering at three maternity hospitals in Berlin, Germany, 2011-2012. Multivariable logistic regression analysis was used to assess immigrant status and other possible risk factors for the baby being delivered preterm, small for gestational age (SGA), or transferred to neonatal care. RESULTS: The final database retained 6702 women, of whom 53.1% were first- or second-generation immigrants. First-generation Turkish immigrant women had significantly lower odds of preterm birth (OR 0.37, P < 0.001), SGA (OR 0.60, P = 0.0079), and transfer of the newborn to neonatal care (OR 0.61, P = 0.0034). Second-generation immigrant women had significantly lower odds of preterm birth (OR 0.67, P = 0.0049) or transfer of the newborn to neonatal care (OR 0.76, P = 0.0312). Moreover, women with education below university level, age 35+, or smokers had higher odds for poor outcomes. CONCLUSIONS: This study provides strong evidence that health disparities for obstetric and perinatal health outcomes do not exist in immigrants relative to native Germans, but exist instead in women without post-secondary-level education compared to women with such education, regardless of ethnicity or migration history.

A distributional approach to obtain adjusted comparisons of proportions of a population at risk.

BACKGROUND: Dichotomisation of continuous data has statistical drawbacks such as loss of power but may be useful in epidemiological research to define high risk individuals. METHODS: We extend a methodology for the presentation of comparison of proportions derived from a comparison of means for a continuous outcome to reflect the relationship between a continuous outcome and covariates in a linear (mixed) model without losing statistical power. The so called "distributional method" is described and using perinatal data for illustration, results from the distributional method are compared to those of logistic regression and to quantile regression for three different outcomes. RESULTS: Estimates obtained using the distributional method for the comparison of proportions are consistently more precise than those obtained using logistic regression. For one of the three outcomes the estimates obtained from the distributional method and from logistic regression disagreed highlighting that the relationships between outcome and covariate differ conceptually between the two models. CONCLUSION: When an outcome follows the required condition of distribution shift between exposure groups, the results of a linear regression model can be followed by the corresponding comparison of proportions at risk. This dual approach provides more precise estimates than logistic regression thus avoiding the drawback of the usual dichotomisation of continuous outcomes.

The association of pre-pregnancy overweight and obesity with delivery outcomes: a comparison of immigrant and non-immigrant women in Berlin, Germany.

OBJECTIVES: To analyse the influence of maternal overweight/obesity on delivery outcomes among first- and second-generation immigrant women and non-immigrant women. METHODS: We used perinatal data from Berlin/Germany (n = 1987 first generation, n = 687 second generation, n = 2185 non-immigrants; gestational age: 24+ weeks; maternal age: 18+ years). Poisson models were fitted to estimate the effect of pre-pregnancy overweight/obesity (categorised according to WHO) on mode of delivery (vaginal vs. emergency caesarean section (ECS)) and labour onset (spontaneous vs. induced). RESULTS: First generation, second generation and non-immigrant women were more likely to have their labour induced when obese [first generation: RR = 1.41 (95 % CI: 1.15-1.72); second generation: RR = 1.51 (95 % CI: 1.14-2.00); non-immigrants: RR = 1.53 (95 % CI: 1.28-1.81)] compared to normal weight. There were also indications of obese women being more likely to deliver by ECS than women of normal weight, irrespective of migrant status. CONCLUSIONS: An elevated RR for obese and in parts for overweight women of labour induction and ECS pertains irrespective of migrant status. This warrants further research looking into pathophysiological in addition to health-system factors. Weight control interventions addressed at overweight/obese women planning pregnancies are urgently needed.

Caesarean Section Frequency among Immigrants, Second- and Third-Generation Women, and Non-Immigrants: Prospective Study in Berlin/Germany.

OBJECTIVE: The frequency of caesarean section delivery varies between countries and social groups. Among other factors, it is determined by the quality of obstetrics care. Rates of elective (planned) and emergency (in-labor) caesareans may also vary between immigrants (first generation), their offspring (second- and third-generation women), and non-immigrants because of access and language barriers. Other important points to be considered are whether caesarean section indications and the neonatal outcomes differ in babies delivered by caesarean between immigrants, their offspring, and non-immigrants. METHODS: A standardized interview on admission to delivery wards at three Berlin obstetric hospitals was performed in a 12-month period in 2011/2012. Questions on socio-demographic and care aspects and on migration (immigrated herself vs. second- and third-generation women vs. non-immigrant) and acculturation status were included. Data was linked with information from the expectant mothers' antenatal records and with perinatal data routinely documented in the hospital. Regression modeling was used to adjust for age, parity and socio-economic status. RESULTS: The caesarean section rates for immigrants, second- and third-generation women, and non-immigrant women were similar. Neither indications for caesarean section delivery nor neonatal outcomes showed statistically significant differences. The only difference found was a somewhat higher rate of crash caesarean sections per 100 births among first generation immigrants compared to non-immigrants. CONCLUSION: Unlike earlier German studies and current studies from other European countries, this study did not find an increased rate of caesarean sections among immigrants, as well as second- and third-generation women, with the possible exception of a small high-risk group. This indicates an equally high quality of perinatal care for women with and without a migration history.

Contribution of overweight and obesity to adverse pregnancy outcomes among immigrant and non-immigrant women in Berlin, Germany.

BACKGROUND: Maternal excessive weight and smoking are associated with an increased risk of pregnancy complications and adverse pregnancy outcomes. In Germany, immigrant women have a higher prevalence of pre-pregnancy overweight/obesity compared with autochthonous women. We compared the contribution of pre-pregnancy overweight/obesity to adverse pregnancy outcomes among immigrant and autochthonous women in Berlin/Germany. METHODS: Data from 2586 immigrant women (from Turkey, Lebanon, other countries of origin) and 2676 autochthonous women delivering in three maternity hospitals of Berlin within 12 months (2011/2012) was used. Cox regression models were applied to estimate the association between overweight/obesity and smoking with the outcomes large-for-gestational-age (LGA), small-for-gestational-age (SGA), preterm birth (PTB) and extreme preterm-birth (E-PTB). Population attributive fractions (PAF) were calculated to quantify the proportion of the outcomes attributable to overweight/obesity and smoking, respectively. RESULTS: Prevalence of overweight and obesity was 33.4% among autochthonous and 53.6% among Turkish women. Prevalence risk ratios of excessive weight were highest for LGA infants among immigrant and autochthonous women. The PAFs were -11.8% (SGA), +16.3% (LGA), +3.6% (PTB) and +16.5% (E-PTB) for the total study population. CONCLUSIONS: Overweight/obesity is strongly associated with an increased risk of delivering an LGA infant among both immigrant and autochthonous women. Compared with autochthonous women, the contribution of excessive weight to LGA is even higher among immigrant women, in whom PAFs of overweight/obesity even exceed those of smoking for some outcomes.

Smoking during pregnancy among Turkish immigrants in Germany-are there associations with acculturation?

INTRODUCTION: We analyzed the association between different acculturation measures and smoking among pregnant immigrant women from Turkey and compared smoking rates between Turkish and German women. METHODS: Perinatal data from a project on the influence of migration and acculturation on pregnancy and birth in Berlin was analyzed. An acculturation index (FRAKK) and two proxy measures (German language proficiency, length of stay in Germany) were used. We performed logistic regression models and calculated age-standardized prevalence ratios (SPR). RESULTS: Smoking prevalence was 19.8% among pregnant Turkish women (n = 702) and 17.8% among German women (n = 2,999). The chance of being a smoker was significantly higher among Turkish women with a length of stay of ≥20 years compared to 0-4 years (OR = 3.63, 95% CI = 1.64-8.05); with good/very good language skills compared to none/minor skills; with high levels of acculturation compared to low levels (the latter only among 18-29-year-old women). Compared to German women, Turkish women with a short length of stay, low acculturation scores and none/minor language skills had lower smoking rates. This finding inverts with long length of stay, high acculturation scores and good/very good language skills (≥20 years: SPR = 2.14, 95% CI = 1.56-2.94). CONCLUSIONS: Smoking among pregnant Turkish women increases with increasing acculturation. Additionally, immigrant women with a low acculturation level are less often smokers and women with a high level are more often smokers than German women. Prevention measures have to prevent women with a low acculturation from starting to smoke and to induce those with a high acculturation to quit. As smoking and acculturation are group phenomena, it is necessary to involve immigrant communities.