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Risk and prognostic factors for diarrheal disease in Brazilian infants: a special case-control design application
Sandra Costa Fuchs1, Cesar Gomes Victora
1Departamento de Medicina Social, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brasil. scfuchs@zaz.com.br
Insights
Low birth weight, stunting, and lack of breastfeeding are key risk and prognostic factors for childhood diarrhea. These factors significantly impact both the likelihood of developing diarrhea and the severity of dehydration in young children.
Area of Science:
- Pediatrics
- Public Health
- Epidemiology
Background:
- Diarrhea remains a major cause of childhood morbidity and mortality globally.
- Understanding risk and prognostic factors is crucial for effective prevention and management strategies.
- Socioeconomic, environmental, and nutritional factors play a significant role in pediatric health outcomes.
Purpose of the Study:
- To investigate the influence of demographic, socioeconomic, environmental, maternal reproductive, dietary, and nutritional variables on diarrhea risk and prognosis in children aged 0-23 months.
- To identify risk factors for developing diarrhea complicated by dehydration.
- To determine prognostic factors for dehydration and risk factors for mild diarrhea.
Main Methods:
- A case-control study was conducted in Greater Metropolitan Porto Alegre involving 576 children (192 each in three groups: severe dehydration, mild diarrhea, and controls).
- Mothers were interviewed using a standardized questionnaire to collect data on various influencing variables.
- Hierarchical analysis with conditional logistic regression was employed to control for confounding factors.
Main Results:
- Low birth weight, stunting, and lack of breastfeeding were identified as significant risk factors for diarrhea.
- These factors also acted as prognostic factors, influencing the severity of dehydration.
- The study highlights the interplay between early-life conditions and diarrhea outcomes.
Conclusions:
- Early-life factors such as low birth weight, stunting, and inadequate breastfeeding are critical determinants of diarrhea risk and prognosis in young children.
- A hierarchical approach is effective in identifying independent risk and prognostic factors for childhood diarrhea.
- Interventions targeting these factors could significantly reduce the burden of childhood diarrhea and dehydration.
Abstract:
The aim of this study was to examine the effect of demographic, socioeconomic, environmental, maternal reproductive, dietary, and nutritional variables on diarrhea risk and prognosis using a hierarchical framework. A case-control study of children aged 0-23 months in Greater Metropolitan Porto Alegre was conducted during the peak season for diarrhea in 1987-1988. Three groups were investigated, with 192 children each. The first group included hospitalized children with an episode of acute diarrhea complicated by moderate to severe dehydration. The second group included children with acute mild diarrhea without signs of dehydration who were identified in the same neighborhood as hospitalized cases. The third group consisted of controls without diarrhea. Mothers were interviewed by trained interviewers using a standardized questionnaire. Data analysis included a hierarchical approach to control for confounding, using conditional logistic regression. Comparison of the three groups aimed to identify risk factors for diarrhea complicated by dehydration, prognostic factors for dehydration, and risk factors for mild diarrhea. Low birth weight, stunting, and lack or breastfeeding acted simultaneously as risk and prognostic factors for diarrhea.