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Abstract: The objectives of this study were to estimate the age of complementary feeding introduction (CFI) and investigate the related health, demographic, and socio‐economic factors. Analyses were based on 10,931 infants from the French national birth cohort ELFE, born in 2011. Health, demographic, and socio‐economic data concerning infants and parents were collected at birth (face‐to‐face interviews and medical records) and 2 months (telephone interviews). Data on milk feeding and CFI practices were collected at birth and 2 months then monthly from 3 to 10 months using online or paper questionnaires. The associations between both health and social factors and CFI age were tested by multivariable multinomial logistic regressions. The mean CFI age was 5.2 ± 1.2 months; 26% of the infants started complementary feeding before 4 months of age (CF < 4 months), 62% between 4 and 6 months of age, and 12% after 6 months of age (CF > 6 months). CF < 4 months was more likely when mothers smoked, were overweight/obese, younger (<29 years), and used their personal experience as an information source in child caregiving and when both parents were not born in France. CF < 4 months was less likely when the infant was a girl, second‐born, when the mother breastfed longer, and had attended at least one birth preparation class. Mothers of second‐born infants and who breastfed their child longer were more likely to introduce CF > 6 months. Couples in which fathers were born in France and mothers were not born in France were less likely to introduce CF > 6 months. CF < 4 months occurred in more than 25% of the cases. It is important to continue promoting clear CFI recommendations, especially in smoking, overweight, young, not born in France, and nonbreastfeeding mothers. [ABSTRACT FROM AUTHOR]

Breastfeeding is recommended until 6 months of age, but a wide range of infant formula is available for nonbreastfed or partially breastfed infants. Our aim was to describe infant formula selection and to examine social- and health-related factors associated with this selection. Analyses were based on 13,291 infants from the French national birth cohort Etude Longitudinale Française depuis l'Enfance. Infant diet was assessed at Month 2 by phone interview and monthly from Months 3 to 10 via internet/paper questionnaires. Infant formulas were categorized in 6 groups: extensively or partially hydrolysed, regular with or without prebiotics/probiotics, and thickened with or without prebiotics/probiotics. Associations between type of infant formula used at 2 months and family or infant characteristics were assessed by multinomial logistic regressions. At Month 2, 58.1% of formula-fed infants were fed with formula enriched in prebiotics/probiotics, 31.5% with thickened formula, and 1.4% with extensively hydrolysed formula. The proportion of formula-fed infants increased regularly, but the type of infant formula used was fairly stable between 2 and 10 months. At Month 2, extensively hydrolysed formulas were more likely to be used in infants with diarrhoea or regurgitation problems. Partially hydrolysed formulas were more often used in families with high income, with a history of allergy, or with infants with regurgitation issues. Thickened formulas were used more with boys, preterm infants, infants with regurgitation issues, or in cases of early maternal return to work. The main factors related to the selection of infant formula were family and infant health-related ones. [ABSTRACT FROM AUTHOR]

Sleep problems reported by parents affect 20% to 30% of infants. Few studies focused on the longitudinal association between infant feeding practices and sleep, especially in France. Analyses were based on 8,696 infants from the French national birth cohort ELFE. Collection of feeding practices from birth to 10 months allowed for the identification of trajectories of use of baby cereals and thickened formula by group‐based trajectory modelling and calculation of duration of any breastfeeding (BF) and age at complementary feeding introduction (CFI) excluding baby cereals. Total sleep duration (TSD), night waking (NW) and sleep onset difficulties (SOD) were reported at age 1. Associations between feeding and sleep were tested by multinomial logistic regressions. BF duration ≥6 months was associated with parent‐reported frequent NW, SOD and TSD ≤ 12 h/24 h at age 1. For TSD and SOD, this association was no longer significant after accounting for parental sleep‐related practices. Early use of baby cereals (≤5 months) was associated with poor sleep. Early CFI (<4 months) was associated with shorter TSD and SOD but not NW. Early use of thickened formula (only <6 months) was related to poor sleep at age 1 (NW and SOD), whereas late (around 6 months) use of thickened formula was associated with better sleep. BF duration ≥6 months was related to poor sleep at age 1 but not after adjustment on 1‐year parental sleep‐related practices except for NW. The use of baby cereals or early CFI was not related to better sleep at age 1. [ABSTRACT FROM AUTHOR]

We described the introduction of complementary food (ICF) during the first year of life and identify associations observed with maternal and infant characteristics. We studied 3368 children included in the Epifane cohort, France, 2012. Maternal and infant characteristics and age at introduction of 28 complementary foods were collected at birth and at 1, 4, 8 and 12 months. Kaplan-Meier plots were used to represent probabilities of ICF. A score was used as tertiles in multinomial logistic regression to identify maternal and infant factors associated with ICF agreement with French recommendations. Median age of ICF was 152 days. While 12.6% of infants received complementary food before the age of 4 months, 95% of them were introduced after 7 months. Recommendations were generally followed, except for eggs and added fats, introduced in only 23.2% and 53.1% of 1-year-old infants, respectively. Factors significantly associated with the first ICF score tertile (low agreement with recommendations) vs. third tertile were as follows: maternal age 18-24 years (OR = 2.24 [1.49-3.35]) or 25-29 years (OR = 1.57 [1.21-2.04]), education less than or equal to high school graduation (OR = 1.94[1.51-2.48]), birthplace in France (OR = 2.13 [1.41-3.21]), three or more children (OR = 1.70 [1.15-2.51]), no follow-up antenatal classes (OR = 1.58 [1.22-2.04]), unemployment before and after pregnancy (OR = 1.64 [1.04-2.59]), unemployment before pregnancy and return to work within 12 months (OR = 2.06 [1.05-4.02]), no breastfeeding (OR = 2.08 [1.55-2.79]) or lasting <28 days (OR = 1.68 [1.22-2.31]) or 1-4 months (OR = 1.45 [1.08-1.96]). Recommendations concerning complementary food were generally followed. However, guidelines should be clarified and adapted to families who have difficulties in adopting them. [ABSTRACT FROM AUTHOR]