Comparison · NCT01857310-2e9ca192
Folic Acid and Zinc Supplementation vs Placebo: Human Chorionic Gonadotropin (hCG) Detected Pregnancy (Implantation)
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
Cite this record
ConductScience Library. Folic Acid and Zinc Supplementation vs Placebo: Human Chorionic Gonadotropin (hCG) Detected Pregnancy (Implantation). Trial comparisons, record NCT01857310-2e9ca192. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT01857310-2e9ca192
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Measures6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note |
|---|---|---|---|---|---|
| Risk in group 1 | 0.404 | 0.377 | 0.432 | wilson | |
| Risk in group 2 | 0.414 | 0.386 | 0.442 | wilson | |
| Risk difference, group 1 minus group 2 | -0.00928 | -0.0488 | 0.0303 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 0.978 | 0.887 | 1.08 | log | |
| Odds ratio, group 1 over group 2 | 0.962 | 0.817 | 1.13 | log | |
| Number needed to treat, for one fewer participant with the outcome on Folic Acid and Zinc Supplementation than on Placebo | 108 | from the risk difference interval | the interval includes no difference |
Source ClinicalTrials.gov
Groups2
Group 2 names the comparator: placebo.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Folic Acid and Zinc Supplementation | 5 mg folic acid and 30 mg elemental zinc, taken orally, daily for 6 months.~5 mg folic acid and 30 mg elemental zinc | 479 | 1,185 | OG000 |
| Group 2 | Placebo | Matching placebo, taken orally daily for 6 months.~Placebo Comparator: Placebo | 490 | 1,185 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Human Chorionic Gonadotropin (hCG) Detected Pregnancy (Implantation)
- Description
- A quantitative hCG evaluation in serum \> 5 milli-international units per milliliter (mIU/ml)
- Time frame
For IVF, 12 days post embryo transfer for day 5 embryo transfers, and 14 days post embryo transfer for day 3 embryo transfers; for couples undergoing OI/IUI, after self-report of positive pregnancy test
- Population
Source ClinicalTrials.gov
Trial
- Title
- Folic Acid and Zinc Supplementation Trial (FAZST)
- NCT number
- NCT01857310
- Phases
- NA
- Conditions
- Pregnancy, Live Birth, Spontaneous Abortion
- Interventions
- 5 mg folic acid and 30 mg elemental zinc, Placebo Comparator: Placebo
- Lead sponsor
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- Results first posted
- 2020-11-19
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT01857310?tab=results
Source ClinicalTrials.gov
Source
- Release
- trial-comparisons-2026-03-23-0.1.0
- Release manifest SHA-256
- f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
- AACT copy
- 2026-03-23
- Tables read
- outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet
Source ClinicalTrials.gov
Sources 2
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
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