What do systematic reviews say?

OHP vs Ringer's solution

The review found no eligible studies for this question.

• Wound cleansing for treating venous leg ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Polyhexamethylene biguanide (PHMB) vs Normal saline

The review found no eligible studies for this question.

• Wound cleansing for treating venous leg ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Levetiracetam vs phenobarbital

The review found no eligible studies for this question.

• Treatment of epilepsy for people with Alzheimer's disease 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Lamotrigine vs phenobarbital

The review found no eligible studies for this question.

• Treatment of epilepsy for people with Alzheimer's disease 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Levetiracetam vs lamotrigine

The review found no eligible studies for this question.

• Treatment of epilepsy for people with Alzheimer's disease 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Ginseng vs placebo

The review found no eligible studies for this question.

• Ginseng for erectile dysfunction 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Adjuvant chemotherapy vs no chemotherapy

The review found no eligible studies for this question.

• Postoperative adjuvant chemotherapy for resectable cholangiocarcinoma 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Nifedipine vs placebo

The review found no eligible studies for this question.

• Nifedipine for primary dysmenorrhoea 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Roux‐en‐Y vs Billroth‐I after distal gastrectomy

• Roux‐en‐Y versus Billroth‐I reconstruction after distal gastrectomy for gastric cancer 2021 · Cochrane Headline outcomes only
  no estimate extracted
  6 studies · 695 participants
  Low

Antibiotics vs no treatment or placebo on top of topical antibiotics

The review found no eligible studies for this question.

• Systemic antibiotics for chronic suppurative otitis media 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Antibiotics vs no treatment or placebo on top of topical antiseptics

The review found no eligible studies for this question.

• Systemic antibiotics for chronic suppurative otitis media 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Antibiotics vs no treatment/placebo

The review found no eligible studies for this question.

• Systemic antibiotics for chronic suppurative otitis media 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Topical quinolone vs intramuscular gentamicin

The review found no eligible studies for this question.

• Topical versus systemic antibiotics for chronic suppurative otitis media 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Topical quinolone vs oral amoxicillin‐clavulanic acid combination

The review found no eligible studies for this question.

• Topical versus systemic antibiotics for chronic suppurative otitis media 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Topical quinolone vs quinolones

The review found no eligible studies for this question.

• Topical versus systemic antibiotics for chronic suppurative otitis media 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Continuous positive airway pressure (CPAP) vs sham CPAP

• Non‐invasive positive airway pressure therapy for improving erectile dysfunction in men with obstructive sleep apnoea 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 61 participants
  GRADE not reported

Continuous positive airway pressure (CPAP) vs phosphodiesterase type 5 inhibitors

The review found no eligible studies for this question.

• Non‐invasive positive airway pressure therapy for improving erectile dysfunction in men with obstructive sleep apnoea 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Continuous positive airway pressure (CPAP) vs no CPAP

The review found no eligible studies for this question.

• Non‐invasive positive airway pressure therapy for improving erectile dysfunction in men with obstructive sleep apnoea 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Silicone gel sheeting vs pressure garments

The review found no eligible studies for this question.

• Silicone gel sheeting for treating hypertrophic scars 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Silicone gel sheeting vs silicone gel

The review found no eligible studies for this question.

• Silicone gel sheeting for treating hypertrophic scars 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found