What do systematic reviews say?

Trazodone vs placebo

The review found no eligible studies for this question.

• Pharmacotherapies for sleep disturbances in dementia 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Inhaled corticosteroids vs placebo

• Inhaled corticosteroids for cystic fibrosis 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 23 participants
  Low

Analgesic (any: NSAID, paracetamol, local anaesthetic or opioid) vs placebo or control

• Pharmacological interventions for pain relief during orthodontic treatment 2017 · Cochrane All outcomes
  Reported narratively by 2 studies (Wang 2012: SF-36 and SAS - significant reduction in SF-36 bodily pain at 30 days vs baseline, no significant between-group differences; Minor 2009: STAI and PANAS - no significant…
  2 studies
  GRADE not reported

Light vibrational forces (LVF) vs Conventional orthodontic appliance treatment

• Non‐surgical adjunctive interventions for accelerating tooth movement in patients undergoing orthodontic treatment 2023 · Cochrane All outcomes
  Katchooi 2018 (unclear risk of bias): light vibrational forces had no statistically significant (P>0.05) effect on OHRQoL when used with orthodontic aligners.
  1 study · 27 participants
  GRADE not reported

Summary of findings: anti‐pseudomonal antibiotics vs placebo

• Inhaled anti‐pseudomonal antibiotics for long‐term therapy in cystic fibrosis 2022 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 245 participants
  Low

Aspirin plus antipsychotics vs placebo/no adjunctive treatment + antipsychotics

The review found no eligible studies for this question.

• Acetylsalicylic acid (aspirin) for schizophrenia 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Mirtazapine adjunct vs placebo adjunct

The review found no eligible studies for this question.

• Mirtazapine adjunct for people with schizophrenia 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Xiongshao capsule (XSC) plus conventional western medicine (CWM) vs conventional western medicine (CWM) plus placebo

The review found no eligible studies for this question.

• Xiongshao for restenosis after percutaneous coronary intervention in patients with coronary heart disease 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Protein, arginine, zinc and antioxidants vs standard diet or placebo

The review found no eligible studies for this question.

• Nutritional interventions for preventing and treating pressure ulcers 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Collagen vs standard diet or placebo

The review found no eligible studies for this question.

• Nutritional interventions for preventing and treating pressure ulcers 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Alpha‐lipoic acid vs placebo

The review found no eligible studies for this question.

• Alpha‐lipoic acid for diabetic peripheral neuropathy 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Immunomodulatory drug maintenance therapy vs placebo/observation

The review found no eligible studies for this question.

• Maintenance therapy for chronic lymphocytic leukaemia 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Intralesional classical immunosuppresants (betamethasone or triamcinolone) vs placebo

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Subcutaneous biologics (dupilumab) vs placebo

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Oral small molecule inhibitors (apremilast or baricitinib) vs placebo

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Topical small molecule inhibitors (ruxolitinib) vs placebo

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Contact immunotherapy (diphencyprone or squaric acid dibutil ester) vs placebo

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Minoxidil vs placebo

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

NB‐UVB vs placebo

The review found no eligible studies for this question.

• Phototherapy for atopic eczema 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Methotrexate vs placebo

The review found no eligible studies for this question.

• Methotrexate for psoriatic arthritis 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found