What do systematic reviews say?

Brachytherapy vs brachytherapy plus radiotherapy

Brachytherapy showed no clear difference in adverse effects compared with brachytherapy plus radiotherapy (moderate certainty).

• Interventions for dysphagia in oesophageal cancer 2014 · Cochrane Headline outcomes only
  OR 1.17 [0.44, 3.15]
  2 studies · 554 participants
  Moderate

Shengmai vs placebo

• Shengmai (a traditional Chinese herbal medicine) for heart failure 2014 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 2 participants
  GRADE not reported

Shengmai plus usual treatment vs usual treatment alone

• Shengmai (a traditional Chinese herbal medicine) for heart failure 2014 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 4 participants
  GRADE not reported

Health education vs HEALTH EMPOWERMENT EDUCATION

HEALTH EDUCATION led to lower adverse Effects compared with HEALTH EMPOWERMENT EDUCATION; GRADE not reported.

• General physical health advice for people with serious mental illness 2014 · Cochrane Headline outcomes only
  RR 0 [0, 0]
  0 studies · 0 participants
  GRADE not reported

Intervention not reported

The review found no eligible studies for this question.

• Relaxation for perimenopausal and postmenopausal symptoms 2014 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Dual mini-screw implant vs Single mini-screw implant

The review found no eligible studies for this question.

• Reinforcement of anchorage during orthodontic brace treatment with implants or other surgical methods 2014 · Cochrane All outcomes
  Adverse effects were not reported in any of the studies comparing two types of surgical anchorage
  0 studies
  No studies found

Resin composite restorations containing antibacterial agents vs Non-antibacterial containing composite restorations

The review found no eligible studies for this question.

• Antibacterial agents in composite restorations for the prevention of dental caries 2013 · Cochrane All outcomes
  No studies were included in this review, as we were unable to find any trials directly comparing antibacterial containing composites to other active interventions or controls.
  0 studies
  No studies found

First‐line chemotherapy vs BSC

• Chemotherapy versus best supportive care for extensive small cell lung cancer 2013 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 65 participants
  Very low

Intervention not reported

• Chemotherapy versus best supportive care for extensive small cell lung cancer 2013 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 542 participants
  Moderate

Physiotherapy with traction vs physiotherapy without traction

The review found no eligible studies for this question.

• Traction for low‐back pain with or without sciatica 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Traction vs another type of traction

The review found no eligible studies for this question.

• Traction for low‐back pain with or without sciatica 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Traction vs any other treatment

The review found no eligible studies for this question.

• Traction for low‐back pain with or without sciatica 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Traction vs Placebo or no active treatment

The review found no eligible studies for this question.

• Traction for low‐back pain with or without sciatica 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Tocainide vs carbamazepine

• Non‐antiepileptic drugs for trigeminal neuralgia 2013 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 24 participants
  GRADE not reported

Intervention not reported

The review found no eligible studies for this question.

• Electrotherapy for neck pain 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Intervention not reported

The review found no eligible studies for this question.

• Electrotherapy for neck pain 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Paracervical vs other regional anaesthesia

• Paracervical local anaesthesia for cervical dilatation and uterine intervention 2013 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 55 participants
  Low

Paracervical vs systemic analgesia

• Paracervical local anaesthesia for cervical dilatation and uterine intervention 2013 · Cochrane Headline outcomes only
  no estimate extracted
  3 studies · 571 participants
  Low

Intervention not reported

• Interventions for improving adherence to ocular hypotensive therapy 2013 · Cochrane Headline outcomes only
  no estimate extracted
  8 studies · 650 participants
  Very low

Intervention not reported

The review found no eligible studies for this question.

• Interventions for improving adherence to ocular hypotensive therapy 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found