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Evidence found and GRADE certainty

5 questions · 9 findings · 1 reviews

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Breastfeeding <24 months vs Breastfeeding for ≥24 months

Early childhood caries (ECC) · Preschool children (<6 years)

After excluding Peres et al. (2017), breastfeeding for less than 24 months was associated with fewer caries (RR 0.49, 95% CI 0.39 to 0.62; I²=6%).

2 findings from 1 review

Breastfeeding <12 months vs Breastfeeding for ≥12 months

Early childhood caries (ECC) · Preschool children (<6 years)

Breastfeeding for <12 vs ≥12 months was associated with significantly fewer caries (RR 0.65, 95% CI 0.50-0.86), indicating breastfeeding beyond 12 months increases ECC risk (substantial heterogeneity; ungraded).

2 findings from 1 review

Breastfeeding <18 months vs Breastfeeding for ≥18 months

Early childhood caries (ECC) · Preschool children (<6 years)

Breastfeeding for <18 vs ≥18 months was associated with significantly fewer caries (RR 0.41, 95% CI 0.18-0.92; substantial heterogeneity; ungraded).

2 findings from 1 review

Breastfeeding for <4 months vs Breastfeeding for ≥4 months

Early childhood caries (ECC) · Preschool children (<6 years)

Breastfeeding for <4 vs ≥4 months was not significantly associated with early childhood caries (RR 0.95, 95% CI 0.80-1.13; ungraded).

1 finding from 1 review

Breastfeeding for <6 months vs Breastfeeding for ≥6 months

Early childhood caries (ECC) · Preschool children (<6 years)

In cohort studies, breastfeeding for <6 vs ≥6 months was not significantly associated with early childhood caries (RR 0.97, 95% CI 0.88-1.06; ungraded).

2 findings from 1 review