Early childhood caries (ECC) · Children aged 6 years or younger (preschool children)
In children aged 3 years or younger, preterm birth was not associated with early childhood caries (OR 0.90, 95% CI 0.59 to 1.37); certainty not graded.
2 findings from 1 review
Gestational age (preterm birth < 37 weeks) · preterm infants
Probiotics administered to pregnant women at risk of preterm birth showed no clear difference in preterm birth < 37 weeks' gestation compared with placebo or no intervention (low certainty).
1 finding from 1 review
Preterm birth less than 34 weeks' gestation · preterm infants
1 finding from 1 review
Gestational age at birth (weeks) · preterm infants
1 finding from 1 review
Intervention not reported
Preterm birth less than 34 weeks' gestation · women undergoing home monitoring for preventing preterm birth versus women receiving standard care
The intervention leads to lower preterm birth less than 34 weeks' gestation (high certainty).
1 finding from 1 review
Intervention not reported
Preterm birth less than 37 weeks' gestation · women undergoing home monitoring for preventing preterm birth versus women receiving standard care
It is very uncertain whether the intervention changes preterm birth less than 37 weeks' gestation (very low certainty).
1 finding from 1 review
Intervention not reported
Any preterm birth (birth < 37 weeks) · women with a previous stillbirth of > 20 weeks' gestation who are pregnant or considering a subsequent pregnancy
It is very uncertain whether the intervention changes any preterm birth (birth < 37 weeks) (very low certainty).
1 finding from 1 review
Intervention not reported
Any preterm birth (birth < 37 weeks) · women with a previous stillbirth of ≥ 20 weeks' gestation who are pregnant or considering a subsequent pregnancy
The intervention showed no clear difference in any preterm birth (birth < 37 weeks) (low certainty).
1 finding from 1 review
Preterm birth · preterm prelabour rupture of membranes (PPROM)
It is very uncertain whether SOF Immunological sealant changes preterm birth less than 37 weeks' gestation compared with standard care (very low certainty).
1 finding from 1 review
Preterm birth · preterm prelabour rupture of membranes (PPROM)
1 finding from 1 review
Preterm birth stratified by gestational age at birth (moderate-to-late 32 to <37, very 28 to <32, extremely <28 weeks) · pregnant women
The planned subanalysis of preterm birth by gestational age at birth (moderate-to-late, very, extremely preterm) could not be performed because of the small number of cases and lack of stratified data in the original studies.
1 finding from 1 review
Dental caries and preterm birth: a systematic review and meta-analysis. 2018 All outcomesPregnant women assessed around delivery in observational studies across multiple countries (Mexico, Malawi, India, France, Jordan, Finland, Tanzania); mostly retrospective cohort and case-control designs · By gestational age at birth
no estimate extracted
0 studies
GRADE not reported
Gestational age (preterm birth < 37 weeks) · pregnant women
Pregnant women with dental caries did not have a significantly increased risk of preterm birth (pooled OR 1.16, 95% CI 0.90 to 1.49; 5 studies; I2=35%); certainty of evidence not graded.
1 finding from 1 review
Preterm birth · women with a twin pregnancy
Oral betamimetic showed no clear difference in preterm birth (less than 37 weeks' gestation) compared with placebo (low certainty).
1 finding from 1 review
Preterm birth less than 34 weeks' gestation · women with a twin pregnancy
Oral betamimetic showed no clear difference in very preterm birth (less than 34 weeks' gestation) compared with placebo (low certainty).
1 finding from 1 review
Preterm birth less than 34 weeks' gestation · pregnant women with chronic or gestational hypertension
Setting of BP measurement: self‐measurement showed no clear difference in preterm birth (birth before 34 completed weeks' gestation) compared with conventional clinic measurement (low certainty).
1 finding from 1 review
Preterm birth · pregnant women
(Infant outcomes) Any supplements containing iron and folic acid showed no clear difference in preterm birth (less than 37 weeks of gestation) (ALL) compared with same supplements without iron nor folic acid (no iron nor folic acid… (low certainty).
1 finding from 1 review
Preterm birth · pregnant women
(Infant outcomes) Any supplements containing iron showed no clear difference in preterm birth (less than 37 weeks of gestation) (ALL) compared with same supplements without iron or no treatment/placebo (no iron or… (moderate certainty).
1 finding from 1 review
Preterm birth · pregnant women
Summary of findings: lipid‐based nutrient supplements (LNS) showed no clear difference in preterm births (births before 37 weeks of gestation) compared with multiple micronutrients (MMN) (moderate certainty).
1 finding from 1 review
Preterm birth · pregnant women
Summary of findings: lipid‐based nutrient supplements (LNS) showed no clear difference in preterm births (births before 37 weeks of gestation) compared with iron folic acid (IFA) (moderate certainty).
1 finding from 1 review
Gestational age (preterm birth < 37 weeks) · Pregnant women considered to have periodontal disease (gingivitis or periodontitis) after dental examination
Periodontal treatment (scaling and root planing, polishing, or… showed no clear difference in gestational age (preterm birth < 37 weeks) compared with no treatment (low certainty).
1 finding from 1 review