Aim To relate eating behaviours at 6 months of age with weight for gestational age at birth.
Methods Study subjects belong to a population-based birth cohort assembled in Porto, Portugal (Generation XXI, n=8666). A sub-cohort of 1562 newborns was re-evaluated at 6 months and 1227 singletons presented data on variables of interest. Data were gathered by trained interviewers. Mother answered a questionnaire on socio-demographic, clinical and behavioural characteristics. Small for gestational age (SGA) and large for gestational age (LGA) were defined as <10th and >90th percentile, respectively, of sex-specific Kramer growth charts. OR and 95% CIs were obtained from unconditional logistic regression, after adjustment for sex, mother's age, education and pre-pregnancy body mass index, maternal smoking during pregnancy, and breastfeeding.
Results Approximately 15% of children were SGA and 4% were LGA. Compared to adequate for gestational age children, SGA had more frequently mothers reporting difficulties in feeding at 6 months (OR=1.52, 95% CI 1.01 to 2.31) and eating small quantities each time (OR=1.78, 95% CI 1.27 to 2.49). LGA children had also more feeding difficulties (OR=2.26, 95% CI 1.10 to 4.63) and a higher probability of refusing solid foods (OR=2.21, 95% CI 1.02 to 4.80). No associations were found neither with eating slowly, being angry at the meals' end, choke with food and spitting up milk, nor a later weaning or inclusion of fruits and vegetables as first foods.
Conclusions Both SGA and LGA children presented more feeding difficulties at 6 months of age, and LGA was associated with neophobia to solid foods.
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