Making ends meet - relating a self-reported indicator of financial hardship to health status.

BACKGROUND: Area-based index of multiple deprivation (IMD) indicators of financial hardship lack individual specificity and sensitivity. This study compared self-reports of hardship with area measures in relation to health status. METHODS: Interviews in one London Borough, reported financial hardship and health status. Associations of health status with most and least deprived quintiles of the IMD 2015 were compared with self-reported hardship; always or sometimes 'having difficulty making ends meet at the end of the month' in relation to never. RESULTS: 1024 interviews reported hardship status in 1001 (98%). 392 people (39%) reported they 'always' or 'sometimes' had hardship. In multivariate analysis, self-reported hardship was more strongly associated with smoking; odds ratio = 5.4 (95% CI: 2.8-10.4) compared with IMD, odds ratio = 1.9 (95% CI: 1.2-3.2). Health impairment was also more likely with self-reported hardship, odds ratio = 11.1 (95% CI: 4.9-25.4) compared with IMD; odds ratio = 2.7 (95% CI: 1.4-5.3). Depression was similarly related; odds ratio = 2.4 (95% CI: 1.0-5.6) and 2.7 (95% CI: 1.2-6.6), respectively. CONCLUSIONS: Self-reported hardship was more strongly related to health status than area-based indicators. Validity and implementation in routine health care settings remains to be established.

Covid-19 lockdown: Ethnic differences in children's self-reported physical activity and the importance of leaving the home environment; a longitudinal and cross-sectional study from the Born in Bradford birth cohort study.

BACKGROUND: In England, the onset of COVID-19 and a rapidly increasing infection rate resulted in a lockdown (March-June 2020) which placed strict restrictions on movement of the public, including children. Using data collected from children living in a multi-ethnic city with high levels of deprivation, this study aimed to: (1) report children's self-reported physical activity (PA) during the first COVID-19 UK lockdown and identify associated factors; (2) examine changes of children's self-reported PA prior to and during the first UK lockdown. METHODS: This study is part of the Born in Bradford (BiB) COVID-19 Research Study. PA (amended Youth Activity Profile), sleep, sedentary behaviours, daily frequency/time/destination/activity when leaving the home, were self-reported by 949 children (9-13 years). A sub-sample (n = 634) also self-reported PA (Physical Activity Questionnaire for Children) pre-pandemic (2017-February 2020). Univariate analysis assessed differences in PA between sex and ethnicity groups; multivariable logistic regression identified factors associated with children's PA. Differences in children's levels of being sufficiently active prior to and during the lockdown were examined using the McNemar test; and multivariable logistic regression was used to identify factors explaining change. RESULTS: During the pandemic, White British (WB) children were more sufficiently active (34.1%) compared to Pakistani Heritage children (PH) (22.8%) or 'Other' ethnicity children (O) (22.8%). WB children reported leaving the home more frequently and for longer periods than PH and O children. Modifiable variables related to being sufficiently active were frequency, duration, type of activity, and destination away from the home environment. There was a large reduction in children being sufficiently active during the first COVID-19 lockdown (28.9%) compared to pre-pandemic (69.4%). CONCLUSIONS: Promoting safe extended periods of PA everyday outdoors is important for all children, in particular for children from ethnic minority groups. Children's PA during the first COVID-19 UK lockdown has drastically reduced from before. Policy and decision makers, and practitioners should consider the findings in order to begin to understand the impact and consequences that COVID-19 has had upon children's PA which is a key and vital behaviour for health and development.

Antenatal risk factors for child maltreatment: Linkage of data from a birth cohort study to child welfare records.

BACKGROUND: Understanding the risk factors for child maltreatment is critical to efforts to reduce its prevalence. OBJECTIVE: This study investigated the association between characteristics and circumstances of mothers during pregnancy and the subsequent identification of concerns about child maltreatment. PARTICIPANTS AND SETTING: The study drew on two data sets: (i) data from questionnaires administered to the expectant mothers of 11,332 children born in a deprived multi-ethnic local authority in England between 2007 and 2011, for a birth cohort study, and (ii) administrative data on children referred to child welfare services. METHODS: The linkage of these two pre-existing data sets enabled the prospective study of risk factors for child maltreatment. RESULTS: A range of factors captured during the antenatal period were associated with an increased likelihood of subsequent recorded child maltreatment concerns, including: younger maternal age (HR=0.96; p < .001), lower maternal education level (HR=1.36; p < .001), maternal mental illness (HR=1.17; p = .001), maternal smoking in pregnancy (HR=1.69; p < .001), single motherhood (HR=1.41; p = .022), larger family size (HR=1.13; p < .001), multiple deprivation (HR=1.01; p = .011), social housing (HR=1.72; p < .001), paternal unemployment (HR=1.79; p < .001), and the receipt of means-tested welfare benefits (HR=1.43; p < .001). A greater total number of risk factors during pregnancy also increased the risk of subsequent maltreatment concerns (HR=1.45; p < .001). CONCLUSIONS: The identification of multiple risk factors in this study supports claims that single targeted interventions are unlikely to be successful in preventing or reducing child maltreatment due to its multifactorial nature, and that multidimensional interventions are required.

Estimating Social Gradients in Health for UK Mothers and Infants of Pakistani Origin: Do Latent Class Measures of Socioeconomic Position Help?

The social gradients in health typically seen in the whole UK population are attenuated/non-existent in some minority ethnic groups. This study aims to compare latent class measures to conventional measures of socioeconomic position (SEP) in the estimation of social gradients in health for women and infants of Pakistani origin in the Born in Bradford cohort. We compare social gradients in birth outcomes, smoking during pregnancy, and maternal mental health using various measures of SEP (including latent class analysis groups) with multivariate regression models. Social gradients in maternal mental health and low birth weight were more clearly defined than before. Otherwise, the latent class SEP variables did not reveal social gradients in health that were not obvious before. This study adds to the evidence that there are weak, if any, social gradients in maternal and child health among UK women and infants of Pakistani origin when measured with these SEP variables.

A Validation and Calibration Process for Self-reported Tobacco Use With Participants' Cotinine Levels: An Example From the Building Blocks Trial.

INTRODUCTION: Reducing smoking in pregnancy was a primary outcome in our Building Blocks trial of the Family Nurse Partnership. We calibrated maternal reports of smoking using cotinine values derived from urine samples to assess tobacco use. This involves identifying the extent to which an individual accurately reports smoking and requires complete and synchronized data collection over time. However, some urine samples may be missed or collected at a different time from self-report (non-synchronized. METHODS: We used statistical validation processes to address both non-synchronized and incomplete data. First, we examined consistency in reporting behaviors at baseline and follow-up for participants grouped by extent of non-synchronized time of collection. Second, we used data from complete cases to infer values for mothers with missing urine samples at follow-up. We then used Markov chain transition rate matrix constructed to assess the robustness of such inferences. RESULTS: Maternal underreporting and overreporting of smoking were consistent across the 870 participants grouped by different levels of noncontemporary data collection (Breslow-Day test: p = .24; chi-square test: p = .69). Using participants' baseline reporting behaviors to infer their follow-ups provided comparable smoking outcomes (4.5 cigarettes/day with SD of 5.5) to the simulated counterparts (4.5 cigarettes/day with SD of 6.0). CONCLUSION: We have demonstrated consistent reporting behavior over time and minimal impact due to nonaligned follow-up urine sample collection. For studies collecting smoking data, this proposed method provided a pragmatic solution to facilitate the calibration process of self-reported tobacco use and retain adequate power without introducing undue bias. IMPLICATIONS: Synchronized and completed data collection is essential but very often hard to achieve in smoking related studies. When violated, proper statistical validation process should be followed to minimize the potential bias and loss of power in trial analyses. For this purpose, we provided the Building Block trial as an example to demonstrate how to deal with the non-synchronization and incompleteness issues in data collection.

Using Birth Cohort Data to Assess the Impact of the UK 2008-2010 Economic Recession on Smoking During Pregnancy.

INTRODUCTION: Despite the well-known link between stress and smoking, evidence for associations between economic recession, financial stress, and smoking is contradictory. In this study, we assess whether women were more likely to continue smoking during pregnancy if they were exposed to the UK 2008-2010 economic recession during pregnancy than those who were unexposed, and whether this relationship is mediated by financial stress. METHODS: We used cross-sectional data on 2775 pregnant women who were regular smokers before pregnancy and who were enrolled in the UK Born in Bradford cohort study between March 2007 and December 2010. The cutoff date for exposure to recession was set as August 1, 2008, based on local and national economic data. Multivariable logistic regression analysis included potential confounders: maternal age, parity, cohabitation, ethnicity, and maternal age. The mediating role of financial stress was analyzed using "worse off financially" and a "difficult financial situation" as indicators of financial stress in Sobel-Goodman mediation tests with bootstrap resampling. RESULTS: After taking into account potential confounders, exposure to recession was associated with continued smoking during pregnancy (OR = 1.19, 95% CI = 1.01 to 1.41, p = 0.03). A worse financial situation and a difficult financial situation were identified as mediators, explaining 8.4% and 17.6%, respectively, of the relationship between exposure to recession and smoking during pregnancy. CONCLUSIONS: Smoking during pregnancy is associated with exposure to the UK 2008-2010 economic recession during pregnancy, and this relationship is partly mediated by financial stress. IMPLICATIONS: Health inequalities in smoking during pregnancy are affected by economic recession, as those who are most likely to smoke are also most likely to experience the financial stress resulting from economic recession. Socioeconomic conditions at the societal and individual level are important targets when aiming to reduce rates of smoking during pregnancy.

Smoking and quit attempts during pregnancy and postpartum: a longitudinal UK cohort.

OBJECTIVES: Pregnancy motivates women to try stopping smoking, but little is known about timing of their quit attempts and how quitting intentions change during pregnancy and postpartum. Using longitudinal data, this study aimed to document women's smoking and quitting behaviour throughout pregnancy and after delivery. DESIGN: Longitudinal cohort survey with questionnaires at baseline (8-26 weeks' gestation), late pregnancy (34-36 weeks) and 3 months after delivery. SETTING: Two maternity hospitals in one National Health Service hospital trust, Nottingham, England. PARTICIPANTS: 850 pregnant women, aged 16 years or over, who were current smokers or had smoked in the 3 months before pregnancy, were recruited between August 2011 and August 2012. OUTCOME MEASURES: Self-reported smoking behaviour, quit attempts and quitting intentions. RESULTS: Smoking rates, adjusting for non-response at follow-up, were 57.4% (95% CI 54.1 to 60.7) at baseline, 59.1% (95% CI 54.9 to 63.4) in late pregnancy and 67.1% (95% CI 62.7 to 71.5) 3 months postpartum. At baseline, 272 of 488 current smokers had tried to quit since becoming pregnant (55.7%, 95% CI 51.3 to 60.1); 51.3% (95% CI 44.7 to 58.0) tried quitting between baseline and late pregnancy and 27.4% (95% CI 21.7 to 33.2) after childbirth. The percentage who intended to quit within the next month fell as pregnancy progressed, from 40.4% (95% CI 36.1 to 44.8) at baseline to 29.7% (95% CI 23.8 to 35.6) in late pregnancy and 14.2% (95% CI 10.0 to 18.3) postpartum. Postpartum relapse was lower among women who quit in the 3 months before pregnancy (17.8%, 95% CI 6.1 to 29.4) than those who stopped between baseline and late pregnancy (42.9%, 95% CI 24.6 to 61.3). CONCLUSIONS: Many pregnant smokers make quit attempts throughout pregnancy and postpartum, but intention to quit decreases over time; there is no evidence that smoking rates fall during gestation.

Ethno-Specific Risk Factors for Adverse Pregnancy Outcomes: Findings from the Born in Bradford Cohort Study.

Objectives Preterm birth (PTB) and small for gestational age (SGA) are major causes of perinatal mortality and morbidity. Previous studies indicated a range of risk factors associated with these poor outcomes, including maternal psychosocial and economic wellbeing. This paper will explore a range of psycho-social and economic factors in an ethnically diverse population. Methods The UK's Born in Bradford cohort study recruited pregnant women attending a routine antenatal appointment at 26-28 weeks' gestation at the Bradford Royal Infirmary (2007-2010). This analysis includes 9680 women with singleton live births who completed the baseline questionnaire. Data regarding maternal socio-demographic and mental health were recorded. Outcome data were collected prospectively, and analysed using multivariate regression models. The primary outcomes measured were: PTB (<37 weeks' gestation) and SGA (<10th customised centile). Results After adjustment for socio-demographic and medical factors, financial strain was associated with a 45 % increase in PTB (OR 1.45: 95 % CI 1.06-1.98). Contrary to expectation, maternal distress in Pakistani women was negatively associated with SGA (OR 0.65: CI 0.48-0.88). Obesity in White British women was protective for PTB (OR 0.67: CI 0.45-0.98). Previously recognized risk factors, such as smoking in pregnancy and hypertension, were confirmed. Conclusions This study confirms known risk factors for PTB and SGA, along with a new variable of interest, financial strain. It also reveals a difference in the risk factors between ethnicities. In order to develop appropriate targeted preventative strategies to improve perinatal outcome in disadvantaged groups, a greater understanding of ethno-specific risk factors is required.

Relative deprivation and risk factors for obesity in Canadian adolescents.

Research on socioeconomic differences in overweight and obesity and on the ecological association between income inequality and obesity prevalence suggests that relative deprivation may contribute to lifestyle risk factors for obesity independently of absolute affluence. We tested this hypothesis using data on 25,980 adolescents (11-15 years) in the 2010 Canadian Health Behaviour in School-aged Children (HBSC) study. The Yitzhaki index of relative deprivation was applied to the HBSC Family Affluence Scale, an index of common material assets, with more affluent schoolmates representing the comparative reference group. Regression analysis tested the associations between relative deprivation and four obesity risk factors (skipping breakfasts, physical activity, and healthful and unhealthful food choices) plus dietary restraint. Relative deprivation uniquely related to skipping breakfasts, less physical activity, fewer healthful food choices (e.g., fruits, vegetables, whole grain breads), and a lower likelihood of dieting to lose weight. Consistent with Runciman's (1966) theory of relative deprivation and with psychosocial interpretations of the health consequences of income inequality, the results indicate that having mostly better off schoolmates can contribute to poorer health behaviours independently of school-level affluence and subjective social status. We discuss the implications of these findings for understanding the social origins of obesity and targeting health interventions.

Is ethnic density associated with health in a context of social disadvantage? Findings from the Born in Bradford cohort.

OBJECTIVES: In this study we aimed to test the associations between area-level ethnic density and health for Pakistani and White British residents of Bradford, England. DESIGN: The sample consisted of 8610 mothers and infant taking part in the Born in Bradford cohort. Ethnic density was measured as the percentage of Pakistani, White British or South Asian residents living in a Lower Super Output Area. Health outcomes included birth weight, preterm birth and smoking during pregnancy. Associations between ethnic density and health were tested in multilevel regression models, adjusted for individual covariates and area deprivation. RESULTS: In the Pakistani sample, higher own ethnic density was associated with lower birth weight (ß = -0.82, 95% CI: -1.63, -0.02), and higher South Asian density was associated with a lower probability of smoking during pregnancy (OR = 0.99, 95% CI: 0.98, 1.00). Pakistani women in areas with 50-70% South Asian residents were less likely to smoke than those living in areas with less than 10% South Asian residents (OR = 0.39, 95% CI: 0.16, 0.97). In the White British sample, neither birth weight nor preterm birth was associated with own ethnic density. The probability of smoking during pregnancy was lower in areas with 10-29.99% compared to <10% South Asian density (OR = 0.79, 95% CI: 0.64, 0.98). CONCLUSION: In this sample, ethnic density was associated with lower odds of smoking during pregnancy but not with higher birth weight or lower odds of preterm birth. Possibly, high levels of social disadvantage inhibit positive effects of ethnic density on health.

Effectiveness of a nurse-led intensive home-visitation programme for first-time teenage mothers (Building Blocks): a pragmatic randomised controlled trial.

BACKGROUND: Many countries now offer support to teenage mothers to help them to achieve long-term socioeconomic stability and to give a successful start to their children. The Family Nurse Partnership (FNP) is a licensed intensive home-visiting intervention developed in the USA and introduced into practice in England that involves up to 64 structured home visits from early pregnancy until the child's second birthday by specially recruited and trained family nurses. We aimed to assess the effectiveness of giving the programme to teenage first-time mothers on infant and maternal outcomes up to 24 months after birth. METHODS: We did a pragmatic, non-blinded, randomised controlled, parallel-group trial in community midwifery settings at 18 partnerships between local authorities and primary and secondary care organisations in England. Eligible participants were nulliparous and aged 19 years or younger, and were recruited at less than 25 weeks' gestation. Field-based researchers randomly allocated mothers (1:1) via remote randomisation (telephone and web) to FNP plus usual care (publicly funded health and social care) or to usual care alone. Allocation was stratified by site and minimised by gestation (<16 weeks vs ≥16 weeks), smoking status (yes vs no), and preferred language of data collection (English vs non-English). Mothers and assessors (local researchers at baseline and 24 months' follow-up) were not masked to group allocation, but telephone interviewers were blinded. Primary endpoints were biomarker-calibrated self-reported tobacco use by the mother at late pregnancy, birthweight of the baby, the proportion of women with a second pregnancy within 24 months post-partum, and emergency attendances and hospital admissions for the child within 24 months post-partum. Analyses were by intention to treat. This trial is registered with ISRCTN, number ISRCTN23019866. FINDINGS: Between June 16, 2009, and July 28, 2010, we screened 3251 women. After enrolment, 823 women were randomly assigned to receive FNP and 822 to usual care. All follow-up data were retrieved by April 25, 2014. 304 (56%) of 547 women assigned to FNP and 306 (56%) of 545 assigned to usual care smoked at late pregnancy (adjusted odds ratio [AOR] 0·90, 97·5% CI 0·64-1·28). Mean birthweight of 742 babies with mothers assigned to FNP was 3217·4 g (SD 618·0), whereas birthweight of 768 babies assigned to usual care was 3197·5 g (SD 581·5; adjusted mean difference 20·75 g, 97·5% CI -47·73 to 89·23. 587 (81%) of 725 assessed children with mothers assigned to FNP and 577 (77%) of 753 assessed children assigned to usual care attended an emergency department or were admitted to hospital at least once before their second birthday (AOR 1·32, 97·5% CI 0·99-1·76). 426 (66%) of 643 assessed women assigned to FNP and 427 (66%) 646 assigned to usual care had a second pregnancy within 2 years (AOR 1·01, 0·77-1·33). At least one serious adverse event (mainly clinical events associated with pregnancy and infancy period) was reported for 310 (38%) of 808 participants (mother-child) in the usual care group and 357 (44%) of 810 in the FNP group, none of which were considered related to the intervention. INTERPRETATION: Adding FNP to the usually provided health and social care provided no additional short-term benefit to our primary outcomes. Programme continuation is not justified on the basis of available evidence, but could be reconsidered should supportive longer-term evidence emerge. FUNDING: Department of Health Policy Research Programme.

Social gradients in health for Pakistani and White British women and infants in two UK birth cohorts.

OBJECTIVES: This study aims to examine social gradients in low birth weight (LBW), preterm birth, smoking during pregnancy and maternal health for women and infants of Pakistani origin and White British women and infants in the UK. DESIGN: The sample included women and singleton infants from the Born in Bradford (BiB) study (n = 8181) and the first sweep of the Millennium Cohort Study (MCS) (n = 8980). Social gradients in health for four measures of socioeconomic status (SES): maternal education, means-tested benefits, financial situation, and occupation of the father were analysed in multivariate regression models adjusting for maternal age and parity. RESULTS: For White British mothers and infants in the MCS sample, social gradients in health were observed for at least three out of four measures of SES for each health outcome (p for trend <.01). Similar trends were found for White British mothers and infants in the BiB sample, although these were less likely to be significant. There were few associations between measures of SES and outcomes in the Pakistani samples. The strongest evidence of a social gradient in health for Pakistani women was demonstrated with the self-reported measure of financial situation, in relation to mental health (p for trend <.001 in both cohorts). CONCLUSION: This study describes a lack of social gradients in health for Pakistani women and infants and discusses potential explanations for this finding.

Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts.

BACKGROUND: An association between education and preterm delivery has been observed in populations across Europe, but differences in methodology limit comparability. We performed a direct cross-cohort comparison of educational disparities in preterm delivery based on individual-level birth cohort data. METHODS: The study included data from 12 European cohorts from Denmark, England, France, Lithuania, the Netherlands, Norway, Italy, Portugal, and Spain. The cohorts included between 2434 and 99 655 pregnancies. The association between maternal education and preterm delivery (22-36 completed weeks of gestation) was reported as risk ratios, risk differences, and slope indexes of inequality with 95% confidence intervals (CIs). RESULTS: Singleton preterm live delivery proportion varied between 3.7% and 7.5%. There were large variations between the cohorts in the distribution of education and maternal characteristics. Nevertheless, there were similar educational differences in risk of preterm delivery in 8 of the 12 cohorts with slope index of inequality varying between 2.2 [95% CI 1.1, 3.3] and 4.0 [95% CI 1.4, 6.6] excess preterm deliveries per 100 singleton deliveries among the educationally most disadvantaged, and risk ratio between the lowest and highest education category varying from 1.4 [95% CI 1.1, 1.8] to 1.9 [95% CI 1.2, 3.1]. No associations were found in the last four cohorts. CONCLUSIONS: Educational disparities in preterm delivery were found all over Europe. Despite differences in the distributions of education and preterm delivery, the results were remarkably similar across the cohorts. For those few cohorts that did not follow the pattern, study and country characteristics did not explain the differences.

Longitudinal cohort survey of women's smoking behaviour and attitudes in pregnancy: study methods and baseline data.

OBJECTIVES: To report the methods used to assemble a contemporary pregnancy cohort for investigating influences on smoking behaviour before, during and after pregnancy and to report characteristics of women recruited. DESIGN: Longitudinal cohort survey. SETTING: Two maternity hospitals, Nottingham, England. PARTICIPANTS: 3265 women who attended antenatal ultrasound scan clinics were offered cohort enrolment; those who were 8-26 weeks pregnant and were currently smoking or had recently stopped smoking were eligible. Cohort enrollment took place between August 2011 and August 2012. PRIMARY AND SECONDARY OUTCOME MEASURES: Prevalence of smoking at cohort entry and at two follow-up time points (34-36 weeks gestation and 3 months postnatally); response rate, participants' sociodemographic characteristics. RESULTS: 1101 (33.7%, 95% CI 32.1% to 35.4%) women were eligible for inclusion in the cohort, and of these 850 (77.2%, 95% CI 74.6% to 79.6%) were recruited. Within the cohort, 57.4% (N=488, 95% CI 54.1% to 60.7%) reported to be current smokers. Current smokers were significantly younger than ex-smokers (p<0.05), more likely to have no formal qualifications and to not be in current paid employment compared to recent ex-smokers (p<0.001). CONCLUSIONS: This contemporary cohort, which seeks very detailed information on smoking in pregnancy and its determinants, includes women with comparable sociodemographic characteristics to those in other UK cross-sectional studies and cohorts. This suggests that future analyses using this cohort and aimed at understanding smoking behaviour in pregnancy may produce findings that are broadly generalisable.

Testing the Latino paradox in Latin America: A population-based study of Intra-regional immigrants in Chile / Evaluación de la "paradoja latina" en Chile utilizando datos de la encuesta de salud de 2006

Background: Several studies in high-income countries report better health status of immigrants compared to the local population ("healthy migrant" effect), regardless of their socioeconomic deprivation. This is known as the Latino paradox. Aim: To test the Latino paradox within Latin America by assessing the health of international immigrants to Chile, most of them from Latin American countries, and comparing them to the Chilean-born. Material and Methods: Secondary data analysis of the population-based CASEN survey-2006. Three health outcomes were included: disability, illness/accident, and cancer/chronic condition (dichotomous). Demographics (age, sex, marital status, urban/rural, ethnicity), socioeconomic-status (SES: educational level, employment status and household income per-capita), and material standards (overcrowding, sanitation, housing quality). Crude and adjusted weighted regression models were performed. Results: One percent of Chile's population were immigrants, mainly from other Latin American countries. A "healthy migrant" effect appeared within the total immigrant population: this group had a significantly lower crude prevalence of almost all health indicators than the Chilean-born, which remained after adjusting for various demographic characteristics. However, this effect lost significance when adjusting by SES for most outcomes. The Latino paradox was not observed for international immigrants compared to the local population in Chile. Also, health of immigrants with the longest time of residency showed similar health rates to the Chilean-born. Conclusions: The Latino paradox was not observed in Chile. Protecting low SES immigrants in Chile could have large positive effects in their health at arrival and over time.

Antecedentes: Hay estudios que informan un mejor estado de salud de los inmigrantes en comparación con la población local (efecto del "migrante sano"), independientemente de su posición socioeconómica (PSE). Esto se conoce como la paradoja latina. Objetivo: Probar la paradoja latina dentro de América Latina en Chile. Material y Métodos: Análisis secundario de datos de la encuesta CASEN 2006. Tres resultados de salud se incluyeron: discapacidad, enfermedad/accidente, cáncer/enfermedad crónica (variables dicotómicas). Se consideraron datos demográficos (edad, sexo, estado civil, zona urbana/rural, grupo étnico), PSE (nivel educativo, situación laboral y el ingreso familiar per cápita), y condiciones materiales (hacinamiento, saneamiento, calidad de la vivienda). Modelos de regresión ponderados crudos y ajustados fueron analizados en STATA 11.0. Resultados: El uno por ciento de la población de Chile eran inmigrantes, principalmente de otros países de América Latina. Un efecto de "inmigrante sano" apareció dentro de la población inmigrante total: este grupo tenía una prevalencia cruda significativamente menor que la población chilena en todos los indicadores de salud. Sin embargo, este efecto de migrante sano pierde su significación al ajustar por PSE. Además, la salud de los inmigrantes con más tiempo de residencia mostró tasas similares de salud a la de origen chileno. Conclusiones: La paradoja latina no se observó en Chile. La protección de los inmigrantes de baja PSE podría tener grandes efectos positivos en su salud.

The effectiveness and cost-effectiveness of the Family Nurse Partnership home visiting programme for first time teenage mothers in England: a protocol for the Building Blocks randomised controlled trial.

BACKGROUND: The Nurse Family Partnership programme was developed in the USA where it is made available to pregnant young mothers in some socially deprived geographic areas. The related Family Nurse Partnership programme was introduced in England by the Department of Health in 2006 with the aim of improving outcomes for the health, wellbeing and social circumstances of young first-time mothers and their children. METHODS / DESIGN: This multi-centre individually randomised controlled trial will recruit 1600 participants from 18 Primary Care Trusts in England, United Kingdom. The trial will evaluate the effectiveness of Family Nurse Partnership programme and usual care versus usual care for nulliparous pregnant women aged 19 or under, recruited by 24 weeks gestation and followed until the child's second birthday. Data will be collected from participants at baseline, 34-36 weeks gestation, 6, 12, 18 and 24 months following birth. Routine clinical data will be collected from maternity, primary care and hospital episodes statistics. Four primary outcomes are to be reported from the trial: birth weight; prenatal tobacco use; child emergency attendances and/or admissions within two years of birth; second pregnancy within two years of first birth. DISCUSSION: This trial will evaluate the effectiveness and cost effectiveness of the Family Nurse Partnership in England. The findings will provide evidence on pregnancy and early childhood programme outcomes for policy makers, health professionals and potential recipients in three domains (pregnancy and birth, child health and development, and parental life course and self-sufficiency) up to the child's second birthday. TRIAL REGISTRATION: Trial registration number: ISRCTN23019866.

Changing patterns of migration in Latin America: how can research develop intelligence for public health? / Cambios en los modelos de migración en América Latina: ¿cómo puede la investigación obtener información útil para la salud pública?

Migration patterns in Latin America have changed significantly in recent decades, particularly since the onset of global recession in 2007. These recent economic changes have highlighted and exacerbated the weakness of evidence from Latin America regarding migration-a crucial determinant of health. Migration patterns are constantly evolving in Latin America, but research on migration has not developed at the same speed. This article focuses on the need for better understanding of the living conditions and health of migrant populations in Latin America within the context of the recent global recession. The authors explain how new data on migrant well-being could be obtained through improved evidence from censuses and ongoing research surveys to 1) better inform policy-makers about the needs of migrant populations in Latin America and 2) help determine better ways of reaching undocumented immigrants. Longitudinal studies on immigrants in Latin America are essential for generating a better representation of migrant living conditions and health needs during the initial stages of immigration and over time. To help meet this need, the authors support the promotion of sustainable sources of data and evidence on the complex relationship between migration and health.

En los últimos decenios, los modelos de migración en América Latina han cambiado significativamente, en particular desde el inicio de la recesión mundial en el 2007. Estos recientes cambios económicos han acentuado y exacerbado la insuficiencia de datos probatorios existentes en América Latina con respecto a la migración, un determinante crucial de la salud. Los modelos de migración están evolucionando constantemente en América Latina, pero la investigación en materia de migración no ha evolucionado a la misma velocidad. Este artículo se centra en la necesidad de un mayor conocimiento de las condiciones de vida y salud de las poblaciones migrantes en América Latina en el contexto de la reciente recesión mundial. Los autores explican cómo se podrían obtener nuevos datos sobre el bienestar de los inmigrantes mediante un mayor aporte de datos probatorios de los censos y las encuestas de investigación en curso para 1) informar mejor a las instancias normativas acerca de las necesidades de las poblaciones migrantes en América Latina; y 2) ayudar a determinar las mejores estrategias para llegar a los inmigrantes indocumentados. Es esencial llevar a cabo estudios longitudinales sobre los inmigrantes en América Latina con objeto de formular una mejor descripción de sus condiciones de vida y sus necesidades de salud durante las etapas iniciales de la inmigración y con el transcurso del tiempo. Para satisfacer esta necesidad, los autores alientan la promoción de fuentes sostenibles de información y datos probatorios sobre la compleja relación entre migración y salud.

The health benefits of Hispanic communities for non-Hispanic mothers and infants: another Hispanic paradox.

OBJECTIVES: In the United States, Hispanic mothers have birth outcomes comparable to those of White mothers despite lower socioeconomic status. The contextual effects of Hispanic neighborhoods may partially explain this "Hispanic paradox." We investigated whether this benefit extends to other ethnic groups. METHODS: We used multilevel logistic regression to investigate whether the county-level percentage of Hispanic residents is associated with infant mortality, low birth weight, preterm delivery, and smoking during pregnancy in 581,151 Black and 2,274,247 White non-Hispanic mothers from the US Linked Birth and Infant Death Data Set, 2000. RESULTS: For White and Black mothers, relative to living in counties with 0.00%-0.99% of Hispanic residents, living in counties with 50.00% or more of Hispanic residents was associated with an 80.00% reduction in the odds of smoking, an infant mortality reduction of approximately one third, and a modest reduction in the risks of preterm delivery and low birth weight. CONCLUSIONS: The health benefits of living in Hispanic areas appear to bridge ethnic divides, resulting in better birth outcomes even for those of non-Hispanic origin.

Testing the Latino paradox in Latin America: a population-based study of Intra-regional immigrants in Chile.

BACKGROUND: Several studies in high-income countries report better health status of immigrants compared to the local population ("healthy migrant" effect), regardless of their socioeconomic deprivation. This is known as the Latino paradox. AIM: To test the Latino paradox within Latin America by assessing the health of international immigrants to Chile, most of them from Latin American countries, and comparing them to the Chilean-born. MATERIAL AND METHODS: Secondary data analysis of the population-based CASEN survey-2006. Three health outcomes were included: disability, illness/accident, and cancer/chronic condition (dichotomous). Demographics (age, sex, marital status, urban/rural, ethnicity), socioeconomic-status (SES: educational level, employment status and household income per-capita), and material standards (overcrowding, sanitation, housing quality). Crude and adjusted weighted regression models were performed. RESULTS: One percent of Chile's population were immigrants, mainly from other Latin American countries. A "healthy migrant" effect appeared within the total immigrant population: this group had a significantly lower crude prevalence of almost all health indicators than the Chilean-born, which remained after adjusting for various demographic characteristics. However, this effect lost significance when adjusting by SES for most outcomes. The Latino paradox was not observed for international immigrants compared to the local population in Chile. Also, health of immigrants with the longest time of residency showed similar health rates to the Chilean-born. CONCLUSIONS: The Latino paradox was not observed in Chile. Protecting low SES immigrants in Chile could have large positive effects in their health at arrival and over time.