Cochrane · systematic review · CD012692

Interventions for unexplained infertility: a systematic review and network meta‐analysis

Wang, R, Danhof, NA, Tjon‐Kon‐Fat, RI, et al. · Cochrane Database of Systematic Reviews · 2019 · Cochrane Library

Gynaecology and FertilityAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
15
current version
GRADE rated
12
No studies
3
Included studies
NR
No studies 3 · 20%Ungraded 0 · 0%Very low 4 · 26.7%Low 7 · 46.7%Moderate 1 · 6.7%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Summary of findings ‐ live birth or ongoing pregnancy

Population: couples with unexplained infertility
5 questions
OutcomeEffectEvidenceStatus / GRADE
Comparator
no estimate extractedNRNo studies
Expectant management
OR 1.01 [0.51, 1.98]NRLow
Downgraded: imprecision
OS
OR 1.2 [0.57, 2.52]NRLow
Downgraded: imprecision
IUI
OR 1.33 [0.67, 3.58]NRLow
Downgraded: imprecision
OS‐IUI
OR 1.17 [0.64, 2.12]NRLow
Downgraded: imprecision

Summary of findings ‐ multiple pregnancy

Population: couples with unexplained infertility
4 questions
OutcomeEffectEvidenceStatus / GRADE
Comparator
no estimate extractedNRNo studies
Expectant management/IUI
OR 3.07 [1, 9.41]NRLow
Downgraded: imprecision, inconsistency
OS
OR 1.09 [0.38, 3.15]NRVery low
Downgraded: risk of bias, imprecision, inconsistency
OS‐IUI
OR 0.8 [0.37, 1.73]NRLow
Downgraded: risk of bias, imprecision, inconsistency

Summary of findings ‐ clinical pregnancy

Population: couples with unexplained infertility
5 questions
OutcomeEffectEvidenceStatus / GRADE
Comparator
no estimate extractedNRNo studies
Expectant management
OR 1.64 [0.99, 2.73]NRVery low
Downgraded: risk of bias, imprecision, inconsistency
OS
OR 0.73 [0.38, 1.42]NRVery low
Downgraded: risk of bias, imprecision, inconsistency
IUI
OR 1.94 [1.05, 3.57]NRVery low
Downgraded: risk of bias, imprecision, inconsistency
OS‐IUI
OR 1.3 [0.68, 2.5]NRLow
Downgraded: risk of bias, imprecision, inconsistency

Summary of findings ‐ moderate/severe OHSS

Population: couples with unexplained infertility
1 question
OutcomeEffectEvidenceStatus / GRADE
Moderate/severe OHSS
OR 2.5 [0.92, 6.76]5 studies · 958 participantsModerate
Downgraded: imprecision