Gap finder

Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

2,653 questions in 194 reviews · Gynaecology and Fertility

current versions
No studies 531 · 20%Ungraded 76 · 2.9%Very low 826 · 31.1%Low 855 · 32.2%Moderate 341 · 12.9%High 24 · 0.9%

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.

QuestionEffectEvidenceStatus / GRADE
DHEA vs HT
Acne DHEA versus tibolone · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
OR 17 [0.9, 320.37]1 study · 50 participantsVery low
DHEA vs HT
Acne DHEA versus ET + P · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
no estimate extractedNRNo studies
DHEA vs control (placebo or no treatment)
Side effects (androgenic overall combined with acne) number of events · women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
OR 3.77 [1.36, 10.47]5 studies · 250 participantsModerate
DHEA vs control (placebo or no treatment)
Side effects ‐ androgenic side effects number of events · women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
OR 6.57 [1.37, 31.59]1 study · 92 participantsLow
DHEA vs control (placebo or no treatment)
Side effects ‐ acne number of events · women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
OR 2.26 [0.56, 9.02]4 studies · 158 participantsModerate
Oral DHEA vs control subgrouped by differing routes of administration
QoL, wellbeing (change scores) ‐ oral administration · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
no estimate extracted1 study · 66 participantsVery low
Oral DHEA vs control subgrouped by differing routes of administration
QoL, wellbeing (change scores) ‐ intravaginal application · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
no estimate extracted1 study · 107 participantsVery low
Oral DHEA vs control subgrouped by differing routes of administration
Side effects: acne ‐ skin application · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
OR 2.74 [0.1, 74.87]1 study · 22 participantsVery low
Oral DHEA vs control subgrouped by differing routes of administration
Side effects: acne ‐ oral administration · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
OR 2.16 [0.47, 9.96]3 studies · 136 participantsVery low
DHEA vs HT
QoL, general wellbeing DHEA versus ET · Women in the peri‐ or postmenopausal phase
Dehydroepiandrosterone for women in the peri‐ or postmenopausal phase (2015) · Cochrane
no estimate extracted1 study · 17 participantsVery low
Early oral feeding vs delayed oral feeding
Postoperative ileus · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
RR 0.47 [0.17, 1.29]3 studies · 279 participantsModerate
Early oral feeding vs delayed oral feeding
Nausea or vomiting or both · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
RR 1.03 [0.64, 1.67]4 studies · 484 participantsModerate
Early oral feeding vs delayed oral feeding
Time to bowel sounds [days] · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
no estimate extracted2 studies · 338 participantsModerate
Early oral feeding vs delayed oral feeding
Time to the passage of flatus [days] · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
no estimate extracted3 studies · 444 participantsHigh
Early oral feeding vs delayed oral feeding
Time to the first solid diet [days] · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
no estimate extracted2 studies · 301 participantsModerate
Early oral feeding vs delayed oral feeding
Time to first passage of stool [days] · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
no estimate extracted2 studies · 249 participantsModerate
Early oral feeding vs delayed oral feeding
Hospital stay [days] · Women who had major abdominal gynaecologic surgery
Early versus delayed oral fluids and food for reducing complications after major abdominal gynaecologic… (2014) · Cochrane
no estimate extracted4 studies · 484 participantsModerate
Laparoscopic myomectomy vs open myomectomy (all types)
Postoperative pain at 6 hours VAS from 0 to 10 · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
no estimate extracted1 study · 148 participantsModerate
Laparoscopic myomectomy vs open myomectomy (all types)
Postoperative pain at 24 hours VAS from 0 to 10 · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
no estimate extracted4 studies · 232 participantsModerate
Laparoscopic myomectomy vs open myomectomy (all types)
Postoperative pain at 48 hours VAS from 0 to 10 · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
no estimate extracted2 studies · 80 participantsModerate
Laparoscopic myomectomy vs open myomectomy (all types)
Perioperative in‐hospital adverse events; unscheduled return to theatre · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
OR 3.04 [0.12, 75.86]2 studies · 188 participantsLow
Laparoscopic myomectomy vs open myomectomy (all types)
Perioperative in‐hospital adverse events; laparoconversion · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
OR 1.11 [0.44, 2.83]8 studies · 756 participantsModerate
Laparoscopic myomectomy vs open myomectomy (all types)
Perioperative in‐hospital adverse events; injury to pelvic organs · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
OR 3.04 [0.12, 75.86]1 study · 148 participantsModerate
Laparoscopic myomectomy vs open myomectomy (all types)
In‐hospital adverse events; postoperative fever · Women with uterine fibroids
Minimally invasive surgical techniques versus open myomectomy for uterine fibroids (2014) · Cochrane
OR 0.44 [0.26, 0.77]6 studies · 635 participantsModerate
Uterine artery embolization (UAE) vs surgery
Satisfaction with treatment up to 24 months · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 0.94 [0.59, 1.48]6 studies · 640 participantsModerate
Uterine artery embolization (UAE) vs surgery
Satisfaction with treatment at 5 years · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 0.9 [0.45, 1.8]2 studies · 295 participantsModerate
Uterine artery embolization (UAE) vs surgery
Live birth ‐ UAE versus myomectomy · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 0.26 [0.08, 0.84]1 study · 66 participantsVery low
Uterine artery embolization (UAE) vs surgery
Adverse events: intra‐procedural complications · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 0.91 [0.42, 1.97]4 studies · 452 participantsLow
Uterine artery embolization (UAE) vs surgery
Adverse events: minor post‐procedural complications within one year · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 1.99 [1.41, 2.81]6 studies · 735 participantsModerate
Uterine artery embolization (UAE) vs surgery
Adverse events: major post‐procedural complications within one year · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 0.65 [0.33, 1.26]5 studies · 611 participantsModerate
Uterine artery embolization (UAE) vs surgery
Further interventions within 2 years · women with symptomatic uterine fibroids
Uterine artery embolization for symptomatic uterine fibroids (2014) · Cochrane
OR 3.72 [2.28, 6.04]6 studies · 732 participantsModerate
Interventions to reduce blood loss during myomectomy for fibroids vs placebo or no treatment
Intervention · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extractedNRNo studies
Interventions to reduce blood loss during myomectomy for fibroids vs placebo or no treatment
Loop ligation of myoma pseudocapsule plus vasopressin · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 70 participantsLow
Interventions to reduce blood loss during myomectomy for fibroids vs placebo or no treatment
Fibrin sealant patch (collagen sponge with thrombin and fibrinogen) · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 70 participantsLow
Misoprostol vs placebo to reduce blood loss during myomectomy
Blood loss (ml) Estimated blood loss during myomectomy · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted2 studies · 89 participantsModerate
Misoprostol vs placebo to reduce blood loss during myomectomy
Need for blood transfusion Number of participants who received blood transfusion · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
OR 0.36 [0.05, 2.5]2 studies · 89 participantsLow
Misoprostol vs placebo to reduce blood loss during myomectomy
Duration of surgery (min) Operative time · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
MD 91 study · 25 participantsLow
Vasopressin vs placebo to reduce blood loss during myomectomy
Blood loss (ml) Estimated blood loss during myomectomy · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted3 studies · 128 participantsModerate
Vasopressin vs placebo to reduce blood loss during myomectomy
Need for blood transfusion Participants who received blood transfusion · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
OR 0.15 [0.03, 0.74]2 studies · 90 participantsModerate
Vasopressin vs placebo to reduce blood loss during myomectomy
Duration of surgery Operative time · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted2 studies · 108 participantsModerate
Bupivicaine plus epinephrine vs placebo to reduce blood loss during myomectomy
Blood loss (ml) Estimated blood loss during myomectomy · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 60 participantsLow
Bupivicaine plus epinephrine vs placebo to reduce blood loss during myomectomy
Need for blood transfusion Participants who received blood transfusion · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extractedNRNo studies
Interventions to reduce blood loss during myomectomy for fibroids vs placebo or no treatment
Misoprostol in abdominal myomectomy · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 25 participantsModerate
Bupivicaine plus epinephrine vs placebo to reduce blood loss during myomectomy
Duration of surgery (min) Operative time · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 60 participantsLow
Peri‐cervical tourniquet vs no treatment to reduce blood loss during myomectomy
Blood loss (ml) Estimated blood loss during myomectomy · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted2 studies · 121 participantsLow
Peri‐cervical tourniquet vs no treatment to reduce blood loss during myomectomy
Need for blood transfusion Participants who received blood transfusion · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
OR 0.22 [0.09, 0.55]2 studies · 121 participantsLow
Peri‐cervical tourniquet vs no treatment to reduce blood loss during myomectomy
Duration of surgery (min) Operative time · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 28 participantsVery low
Gelatin‐thrombin matrix vs placebo or no treatment to reduce blood loss during myomectomy
Blood loss (ml) Estimated blood loss during myomectomy · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
no estimate extracted1 study · 50 participantsLow
Gelatin‐thrombin matrix vs placebo or no treatment to reduce blood loss during myomectomy
Need for blood transfusion Participants who received blood transfusion · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
OR 0.01 [0, 0.1]1 study · 50 participantsLow
Gelatin‐thrombin matrix vs placebo or no treatment to reduce blood loss during myomectomy
Duration of surgery (min) Operative time · Women with fibroids
Interventions to reduce haemorrhage during myomectomy for fibroids (2014) · Cochrane
MD 5 [1.29, 8.71]1 study · 50 participantsLow