Methodological description and preliminary results of a cohort study on the influence of the first 1,000 days of life on the children’s future health

TRAEBERT, JEFFERSON; LUNARDELLI, SANDRA E.; MARTINS, LUIZ G.T.; SANTOS, KAROLINY DOS; NUNES, RODRIGO D.; LUNARDELLI, ABELARDO N.; TRAEBERT, ELIANE

doi:10.1590/0001-3765201820170937

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Health Sciences • An. Acad. Bras. Ciênc. 90 (3) • Jul-Sep 2018 • https://doi.org/10.1590/0001-3765201820170937 copy

Methodological description and preliminary results of a cohort study on the influence of the first 1,000 days of life on the children’s future health

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The aim of this report is to describe general and methodological characteristics of a cohort study in southern Brazil (Coorte Brasil Sul), aimed at understanding the impact of the first 1,000 days of life on children’s health. It is a cohort study involving all children born in 2009 and their families living in the municipality of Palhoça, State of Santa Catarina, Brazil. Face-to-face interviews with parents at home using a structured questionnaire and children’s physical and clinical examinations at schools have been carried out. Cross-sectional analyzes, longitudinal comparisons and hierarquical regression analysis will allow understanding if the first 1,000 days of life can influence on 6-year-old children’s health. The Coorte Brasil Sul is in its retrospective phase together with the children’s physical data collection. Preliminary data (n=1270) related to nutritional status point to a high prevalence of overweight (16.4%) and obesity (15.5%). With the continuity of the study, it is expected to evaluate if the first phases of life can influence health during adolescence and in adult life, mainly in relation to chronic diseases.

Key words
Health surveys; cohort studies; social determinants of health; child health

SECTIONS		INFORMATION COLLECTION
Section A	General conditions of children’s health and family history	- Infectious/chronic diseases - Use of medications- Family history of allergic diseases
Section B	Oral health status of children	- Hygiene habits - Infant sucking habits - Mouth breathing - Dental trauma - Dental-related pain- Oral health perception
Section C	Eating habits	- Breastfeeding - Nutrition standard in early years - Sugar consumption
Section D	Childbirth-related conditions of mothers	- Maternal demographics - Diseases during pregnancy - Use of tobacco/alcohol/drugs during pregnancy - Prenatal consultations - Childbirth complications
Section E	Study of allergic diseases	ISAAC questionnaires^*: - Module 1 - asthma- Module 2 - rhinitis- Module 3 - eczema
Section F	Environment	- Household environmental conditions during pregnancy and current period
Section G	Socioeconomic conditions of the family at child’s birth	- Parents’ occupation - Parents’ education level- Type of household - Basic sanitation - Incomehousehold
Section H	Childbirth-related conditions	- Child’s health card data - Diseases/complications after birth
Section I	Children’s physical activity	- Brazilian version of the Netherlands Physical Activity Questionnaire^**

EVENTS/INJURIES	%
Child conditions	%
Low birth weight (2,500 grams or less)	6.1
Vaginal delivery route	55.5
Use of antibiotics in the first two years	60.4
Hospital stay for the first 29 days	8.9
Hospital admission in the first two years	16.3
Child attended day care	79.8
Complete vaccination card at six years	95.9
Was breastfed	91.2
Exclusive breastfeeding for at least six months	56.9
Mother reports that the child prefers to play on the street or patio in relation to indoors or school	51.8
Mother reports that the child is less physically active compared to children of the same age	22.5
Overweight at 6 years old	16.4
Obesity of the child at 6 years old	15.5
Report of allergic diseases in children
Report of occurrence of wheezing in the first two years	33.2
Report of occurrence problems with sneezing, runny nose or nasal obstruction in the first two years	22.7
Report of occurrence of itchy spots on the skin (eczema) in the first two years	11.8
Child coexists with fur animals or feather indoors	52.9
Aspects of the child’s oral health
Drink chocolate with sugar during the week	65.7
Take soda during the week	64.0
Started toothbrushing before two years	83.5
Had toothache in the past 30 days	20.6
Already fell, hurting the mouth or the teeth	38.3
Never went to the dentist	26.4
Habits and socioeconomic conditions of the mother
Mother reported having ingested alcohol during pregnancy	6.5
Mother reported having smoked cigarettes during pregnancy	13.9
Mother worked during pregnancy	49.2
Family receives Bolsa Família	13.9
Mother’s education of at least eight years of full study while becoming pregnant	46.9
Current mother’s education of at least 8 years of full study	50.4

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[1] Correspondence to: Jefferson Traebert E-mail: jefferson.traebert@unisul.br