Pre‐eclampsia · pregnant women, either during the prenatal period or during labour.
Pyridoxine (B6) showed no clear difference in pre‐eclampsia ‐ Antenatal oral pyridoxine versus control compared with control (low certainty).
2 findings from 1 review
Dental caries · pregnant women, either during the prenatal period or during labour.
Pyridoxine (B6) may leads to lower dental decay (increase in decayed, missing or filled teeth) ‐… compared with control (low certainty).
1 finding from 1 review
Dental decay (increase in decayed, missing or filled teeth) ‐ Antenatal pyridoxine lozenges versus control · pregnant women, either during the prenatal period or during labour.
Pyridoxine (B6) may leads to lower dental decay (increase in decayed, missing or filled teeth) ‐… compared with control (low certainty).
1 finding from 1 review
Preterm birth · pregnant women, either during the prenatal period or during labour.
1 finding from 1 review
no estimate extracted
0 participants
GRADE not reported
Low birthweight · pregnant women, either during the prenatal period or during labour.
1 finding from 1 review
no estimate extracted
0 participants
GRADE not reported
Intervention not reported
Preterm birth · Pregnant women
The intervention showed no clear difference in preterm birth (low certainty).
1 finding from 1 review
Intervention not reported
Maternal mortality · Pregnant women
1 finding from 1 review
Intervention not reported
Perinatal mortality · Pregnant women
The intervention showed no clear difference in perinatal mortality (low certainty).
1 finding from 1 review
Intervention not reported
Maternal anaemia · Pregnant women
The intervention showed no clear difference in maternal anaemia (low certainty).
1 finding from 1 review
Intervention not reported
Maternal clinical infection · Pregnant women
The intervention showed no clear difference in maternal clinical infection (low certainty).
1 finding from 1 review
Alzheimer’s disease · Participants in observational studies
The meta-analysis of observational studies reported a SMD (to OR) of 0.08 (95% CI 0.01 to 0.63) for higher versus lower circulating vitamin D concentration.
1 finding from 1 review
Aggressive prostate cancer · Participants in observational studies
The meta-analysis of observational studies reported a OR of 0.88 (95% CI 0.68 to 1.15) for higher versus lower circulating vitamin D concentration.
1 finding from 1 review
Prostate cancer · Participants in observational studies
The meta-analysis of observational studies reported a OR of 0.99 (95% CI 0.87 to 1.12) for higher versus lower circulating vitamin D concentration.
1 finding from 1 review
Tuberculosis · Participants in observational studies
The meta-analysis of observational studies reported a SMD (to OR) of 0.29 (95% CI 0.19 to 0.46) for higher versus lower circulating vitamin D concentration.
1 finding from 1 review
Breast cancer · Participants in observational studies
The meta-analysis of observational studies reported a OR of 0.99 (95% CI 0.68 to 1.47) for higher versus lower circulating vitamin D concentration.
1 finding from 1 review
Intervention not reported
Incidence of recurrent VTE · patients with venous thromboembolism
The intervention leads to lower incidence of recurrent VTE (high certainty).
1 finding from 1 review
Intervention not reported
Incidence of major bleeding · patients with venous thromboembolism
The intervention probably leads to higher incidence of major bleeding (moderate certainty).
1 finding from 1 review
Intervention not reported
Mortality · patients with venous thromboembolism
The intervention showed no clear difference in mortality (moderate certainty).
1 finding from 1 review
Intervention not reported
Health‐related quality of life ( · adults
1 finding from 1 review
Intervention not reported
Health economics ( · adults
1 finding from 1 review