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Maternal mental health during different stages of life can have a significant impact on a child's cognitive development. This study aimed to investigate the association between maternal CMD at two distinct stages of the offspring's life (at 3 months and 11 years) and their IQ scores at 6 and 18 years across two birth cohorts. The study utilized data from two Brazilian birth cohorts: the 1993 cohort (full sample: N = 3719, subsample: N = 436), and the 2004 Pelotas Birth Cohort (N = 3440). IQ assessments were conducted at ages 18 and 6, employing the Wechsler Adult Intelligence Scale, third version (WAIS-III), and Wechsler Intelligence Scale for Children, third version (WISC-III), respectively. The presence of maternal CMD at 3 months and 11 years of age was evaluated using the Brazilian version of the Self-Reporting Questionnaire (SRQ-20). After adjustment, participants whose mothers experienced CMD at 3 months had average IQ scores 1.74 (95 % CI: -2.83 to -0.67) and 2.79 (95 % CI: -5.54 to -0.04) points lower at ages 6 (2004 cohort) and 18 (1993 cohort subsample), respectively. Furthermore, in the 1993 cohort (both full and subsample), maternal CMD at 11 years was associated with lower IQ scores at age 18. Understanding the mechanisms underlying this association, emphasized by these findings, is crucial for promoting children's cognitive development, educational achievement, and overall well-being.

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OBJECTIVE: To investigate the relationship between ultra-processed food (UPF) consumption and dental caries in adolescents. METHODS: Data from 996 adolescents aged 12-13 years who participated in an oral health sub-study of the 2004 Pelotas Birth Cohort in southern Brazil were analysed. The main exposure was daily UPF consumption at age 10-11 years, measured by a food frequency questionnaire containing 24 UPF items defined based on the NOVA system. UPF consumption was calculated in frequency, grams and calories, in general and for six types of food (biscuits, savoury snacks and sugar-sweetened cereals; ultra-processed meats and fats; sweets; fast food and instant noodles; soft drinks and artificially flavoured drinks; and sweetened milk and powdered chocolate). The outcome was dental caries, measured according to the decayed, missing and filled indexes (DMFS and dmfs) at age 12-13 years. Poisson regression models were used to analyse the association between UPF consumption and dental caries, adjusting for socioeconomic and demographic variables, dental visits and oral hygiene. RESULTS: Overall, the daily UPF consumption in frequency, grams and calories was associated with caries. The findings were consistent for UPF consumption for all six food groups. The higher the UPF consumption, the higher the probability of having caries in adolescence. The associations between ultra-processed meats and fats, and fast food and instant noodles intake with dental caries alert to the cariogenic potential of such UPF foods. CONCLUSION: Ultra-processed food consumption was associated with greater caries burdens in young adolescents. The findings reinforce the need for interventions and public policies to reduce UPF consumption in adolescence.

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OBJECTIVES: To evaluate the validity of partial protocols (PP) to assess the prevalence of developmental defects of enamel (DDE) in permanent teeth and identify the strength of the association between DDE and some risk factors, using PP compared to the full-mouth (FM) exam. MATERIALS AND METHODS: This study was conducted in a population-based birth cohort of children born in 2004 in Pelotas, Southern Brazil. Socioeconomic, demographic, pre-, per-, and post-birth variables were collected. A subsample of 994 children was clinically examined for DDE in 2017, using the modified DDE index, using the "full- mouth" (FM) protocol. After FM had been performed, a dataset was created. Two different partial protocols (PP) were simulated from FM data: "only buccal surfaces (BS)" and "incisive and molars only (IM)." Sensitivity, absolute and relative bias, and inflation factors were calculated. RESULTS: For any DDE, FM had prevalence of 40.8%. The prevalence of DDE was 38.8% and 36.0%, for BS and IM protocols, respectively. When tested for any DDE, PP "BS" and "IM" showed high sensitivity. The underestimation of the true prevalence did not exceed 6.9% for PP "BS" and 16.1% for PP "IM." All protocols showed similar magnitude of association with the selected risk factors. CONCLUSION: Both PP "BS" and "IM" can be used to estimate the prevalence of DDE in epidemiological studies. CLINICAL RELEVANCE: Oral health surveys now have the option of using PP to collect DDE prevalence and investigate their association with risk factors, being less time-consuming, expensive, and labor intensive.

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To investigate the associations of maternal excess weight before pregnancy with (1) weaning at 3 months of age, (2) duration of exclusive breast-feeding at 6 months of age, (3) duration of any breast-feeding at 12 months of age and (4) to compare the magnitude of these associations over four decades. Data were from participants in the Pelotas (Brazil) Birth Cohorts born in 1982 (n 5334), 1993 (n 1442), 2004 (n 4092) and 2015 (n 4102). Maternal pre-pregnancy weight was collected after the delivery and breast-feeding status was assessed when children were 3 and 12 months old. Only in the most recent cohort (2015), women with excess weight (BMI ≥ 25 kg/m2) before pregnancy had higher risk of discontinuing exclusive breast-feeding within the first 6 months postpartum than women with normal weight (hazard ratio = 1·22 (95 % CI 1·15, 1·30)). Duration of any type of breast-feeding until 12 months of age was not affected by pre-pregnancy weight. Excess weight before pregnancy is associated with exclusive breast-feeding only in the most recent birth cohort coinciding with increases in excess weight and breast-feeding over time.

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[This corrects the article DOI: 10.1007/s00038-020-01505-0.].

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OBJECTIVES: To assess time trends in unplanned pregnancy, stratified by sociodemographic status, reproductive history, and inequalities in family income and women's skin color, in Pelotas, Brazil. METHODS: Data from mothers of participants of the 1993 (N = 5264), 2004 (N = 4243), and 2015 (N = 4268) Pelotas birth cohorts were analyzed. Unplanned pregnancy was investigated in the perinatal period, with tests to assess changes over time among different sociodemographic and reproductive history subgroups and inequalities as a function of family income and skin color. RESULTS: The prevalence of unplanned pregnancy was 62.7% (3299/ 5264), 65.9% (2794/ 4243), and 52.2% (2226/ 4268) in the 1993, 2004, and 2015 cohorts, respectively. Black or brown women and women of lower socioeconomic status had a higher prevalence of unplanned pregnancy in all cohorts. The overall rate of unplanned pregnancy decreased over time in most subgroups. Inequality as a function of family income and skin color increased during the time frame of assessment. CONCLUSIONS: The prevalence of unplanned pregnancies decreased in the period analyzed, but it is still unjustifiably high. Efforts aimed at reducing unplanned pregnancy are vital and will require special attention to the most vulnerable groups.

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BACKGROUND: Studies comparing the outcome of spontaneous versus assisted reproductive technologies (ART) pregnancies report heterogeneous results. Despite the success of ART to overcome infertility, concern is growing regarding both its safety and its effect on maternal and child health. The objective of this study was to compare maternal and child-health outcomes after ART relative to natural conception. METHODS: A population-based birth cohort study was carried out among pregnant women expected to deliver in 2015 in Pelotas, southern Brazil. Maternal outcomes included pregnancy complications and gestational weight gain. Gestational age, weight, intrauterine growth restriction, length and head circumference, and 1-min and 5-min Apgar, as well as health problems at birth and breastfeeding were defined as offspring outcomes. Statistical analyses were performed using linear and logistic regression. G-formula was used to perform mediation analysis. RESULTS: The study included 4252 babies born by spontaneously pregnancies and 23 babies born after ART. Adjusted analyses showed that children conceived from ART presented lower means of gestational age (p = 0.001), birth weight (p = 0.002), length (p < 0.001), and head circumference at birth (p = 0.02). However, more than 90% of the effect of ART over these outcomes was mediated by multiple pregnancy. CONCLUSION: Our findings suggest that the possible negative effect on the child-health outcomes is due mainly to the higher incidence of multiple pregnancies and not because of ART. The reasons for the increase in adverse pregnancy outcomes associated with ART singleton pregnancies are still uncertain and warrants further research. Further large-population studies are needed to confirm these results.

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OBJECTIVES: The aim of this study was to assess the prevalence of direct restorations in posterior teeth in children aged 12, from a birth cohort, and to test the association between the quality of the restorations and individual variables experienced in the life cycle. METHODS: All live-born children in Pelotas, in 2004, were prospectively investigated and a representative sample was assessed for oral conditions at ages 5 and 12. The outcome was the quality of the restoration (satisfactory/unsatisfactory). Independent variables included socioeconomic, behavioral and oral health characteristics at the individual level and the size of cavity and material at the tooth level. Associations were tested using multilevel logistic regression models. RESULTS: A total of 1,000 participants and 249 restorations in the permanent dentition were examined. Most of the restorations were composites (73.5%), while only 6.8% were amalgam. After adjusted analyses, children whose parents received information on how to prevent their child from developing caries before reaching 5 years of age had 91.0% less chance of having an unsatisfactory restoration compared to children whose parents never received information (OR = 0.09; 95% CI 0.01-0.59). Also, the chances of presenting unsatisfactory restorations were 5.3 higher in children at high-risk for untreated dental caries in the permanent dentition, in comparison with children at low risk (OR = 5.32; 95% CI 1.07-26.6). CONCLUSIONS: Low-risk for untreated dental caries and having received information on preventing dental caries, reduced the chance of presenting failed restorations, showing that factors related to individuals play an important role in the quality of restorations. CLINICAL SIGNIFICANCE: Our findings highlight the role that individual-related factors play in restoration longevity in children, reinforcing the need for a patient-centered approach in restorative dentistry.

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OBJECTIVE: To investigate the influence of maternal depression on child health-care services utilization. METHODOLOGY: Data from The Pelotas 2004 Birth Cohort collected at birth and at 12- and 24-month follow-ups were used. Four outcomes occurring in the second year of life were investigated: number of well-baby visits, number of medical appointments, number of visits to emergency rooms, and number of hospitalizations. The main exposure was maternal depression symptoms at 12-month post-partum as assessed by the Edinburgh Postpartum Depression Scale (EPDS). Adjusted prevalence ratios (PR) with 95% confidence intervals (95% CI) were calculated by Poisson regression. RESULTS: The prevalence of mothers with depressive symptoms was 27.6% (95% CI: 26.2-29.0%). These mothers showed a 10% lower probability of taking their children to well-baby visits (0.90; 0.85-0.95; p = 0.001); 16% higher probability to seek medical consultations (1.16; 1.09-1.25, p = 0.001); and they sought emergency services for their children more often (1.30; 1.17-1.45, p < 0.001) as compared to mothers who did not present depressive symptoms. Although the PR for hospitalizations was 26% higher for children from mothers with depressive symptoms, the association did not achieve statistical significance (1.26; 0.98-1.63; p = 0.072). CONCLUSION: Children from mothers with depressive symptoms attend fewer number of preventive consultations. In contrast, they are taken to medical and emergency care more often, suggesting that these children are given healthcare when they are at more advanced stages of their illnesses.

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INTRODUCTION: Injuries during childhood, which mostly consist of falls, burns, drowning, poisonings and car crashes, are among the main causes of death among children and young adults in several countries. OBJECTIVES: To investigate the association between maternal depression and the incidence of injuries during childhood. METHODS: In 2004, children who were born in the municipality of Pelotas, Brazil, were enrolled in a population-based birth cohort, with evaluations at birth and at 3, 12, 24 and 48 months of age. Maternal depression during pregnancy was evaluated at the time of delivery. At 12 and 24 months post partum, the Edinburgh Postnatal Depression Scale (EPDS) was used. The injuries incidence rates at ages of 24-48 months and the crude and adjusted IRRs were calculated with 95% CI through Poisson's regression. RESULTS: A total of 3533 children were analysed. The incidence of injuries was higher among children whose mothers presented depressive symptoms during pregnancy and at 12 and 24 months compared with those whose mothers did not present any symptoms. In the adjusted analysis, the IRR among girls whose mothers presented depressive symptoms during pregnancy and EPDS ≥13 at 12 and 24 months was 1.31 (1.15-1.50); and, among boys, 1.18 (1.03-1.36). INTERPRETATION: Maternal depression is associated with higher incidence of injuries between 24 and 48 months of age, in both sexes.

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