What do systematic reviews say?

Swim‐up technique vs gradient technique

It is very uncertain whether swim‐up technique changes miscarriage rate per couple compared with gradient technique (very low certainty).

• Semen preparation techniques for intrauterine insemination 2019 · Cochrane Headline outcomes only
  OR 0.85 [0.28, 2.59]
  3 studies · 330 participants
  Very low

Swim‐up technique vs wash and centrifugation

The review found no eligible studies for this question.

• Semen preparation techniques for intrauterine insemination 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Acupuncture vs no treatment

The review found no eligible studies for this question.

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Acupuncture vs no treatment

The review found no eligible studies for this question.

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Acupuncture vs sham

It is very uncertain whether acupuncture changes adverse events at up to 2 months' compared with sham (very low certainty).

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  RR 1.74 [0.39, 7.76]
  3 studies · 167 participants
  Very low

Acupuncture vs sham

The review found no eligible studies for this question.

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Acupuncture vs sham

It is very uncertain whether acupuncture changes response rate at end of treatment compared with sham (very low certainty).

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  RR 4.22 [0.45, 39.88]
  2 studies · 100 participants
  Very low

Acupuncture vs sham

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 67 participants
  Low

Acupuncture vs no treatment

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 20 participants
  Very low

Acupuncture vs no treatment

The review found no eligible studies for this question.

• Acupuncture and acupressure for premenstrual syndrome 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metabolomics vs non metabolomics

Metabolomics showed no clear difference in live birth rate (Delivery of a live fetus after 20 completed weeks… compared with non metabolomics (low certainty).

• Metabolomics for improving pregnancy outcomes in women undergoing assisted reproductive technologies 2018 · Cochrane Headline outcomes only
  OR 0.99 [0.69, 1.44]
  3 studies · 597 participants
  Low

Metabolomics vs non metabolomics

Metabolomics may leads to higher cancellation (Exclusion of a patient after recruitment) compared with non metabolomics (low certainty).

• Metabolomics for improving pregnancy outcomes in women undergoing assisted reproductive technologies 2018 · Cochrane Headline outcomes only
  OR 1.78 [1.18, 2.69]
  2 studies · 744 participants
  Low

Metabolomics vs non metabolomics

• Metabolomics for improving pregnancy outcomes in women undergoing assisted reproductive technologies 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 125 participants
  Very low

GnRHa treatment vs other medical therapies before any surgery

The review found no eligible studies for this question.

• Preoperative medical therapy before surgery for uterine fibroids 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

GnRHa treatment vs other medical therapies before any surgery

• Preoperative medical therapy before surgery for uterine fibroids 2017 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 110 participants
  Low

GnRHa treatment vs other medical therapies before any surgery

GnRHa treatment may leads to higher adverse events (hot flushes) compared with other medical therapies before any surgery (low certainty).

• Preoperative medical therapy before surgery for uterine fibroids 2017 · Cochrane Headline outcomes only
  OR 12.3 [4.04, 37.48]
  5 studies · 453 participants
  Low

SPRM vs placebo

The review found no eligible studies for this question.

• Preoperative medical therapy before surgery for uterine fibroids 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

SPRM vs placebo

The review found no eligible studies for this question.

• Preoperative medical therapy before surgery for uterine fibroids 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

SPRM vs placebo

SPRM showed no clear difference in adverse events compared with placebo (low certainty).

• Preoperative medical therapy before surgery for uterine fibroids 2017 · Cochrane Headline outcomes only
  OR 0.05 [0, 1]
  1 study · 241 participants
  Low

Coasting vs no coasting

Coasting may leads to lower OHSS compared with no coasting (low certainty).

• Coasting (withholding gonadotrophins) for preventing ovarian hyperstimulation syndrome 2017 · Cochrane Headline outcomes only
  OR 0.11 [0.05, 0.24]
  2 studies · 207 participants
  Low