A semi-structured questionnaire was developed by the researchers and administered during the interviews with the mothers. This instrument was divided into eight sections, including socioeconomic data on the mother, her obstetric and gynecological background, maternal pathological antecedents, prenatal and birth data, and complementary examinations.

We also used the Child Health Manual developed by the Brazilian Ministry of Health for anthropometric and neurological evaluation of the child based on the developmental milestones contained in the booklet. For the anthropometric evaluation of the children, measurements such as weight (g), height (cm), HC (cm), and thoracic perimeter (cm) were taken. For this evaluation, the growth curve of the World Health Organization that was available in the child health handbook was used 10 .

The child's weight was taken using a platform-type digital scale, placed on a flat surface. During this evaluation, the child was barefoot, wearing only a diaper or an underwear. For children who did not stand on the scale, the weights of the mother and child were evaluated together, after which the mother's weight was subtracted.

The height of the children was measured, in centimeters, using an anthropometric ruler with the child lying down on a flat surface.

The cephalic perimeter was evaluated by measuring with a non-retractable tape measure positioned over the occipital prominence and over the arches of the ears. The tape was placed around the frontal bone over the supra orbital groove, passing on the same level on each side and placed on the occipital prominence. To assess the child's development, the developmental milestones for the specific age available in the child's health handbook were used, as recommended by the Ministry of Health of Brazil 10 .

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