What do systematic reviews say?

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

Manual therapy, prescribed exercises or both vs placebo

The review found no eligible studies for this question.

• Manual therapy and exercise for lateral elbow pain 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

External differential programmable pressure valve vs non‐programmable valves

The review found no eligible studies for this question.

• Ventriculo‐peritoneal shunting devices for hydrocephalus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: inhaled TOBI® (IV preparation) vs tobramycin

The review found no eligible studies for this question.

• Inhaled anti‐pseudomonal antibiotics for long‐term therapy in cystic fibrosis 2022 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

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

• Non‐invasive positive airway pressure therapy for improving erectile dysfunction in men with obstructive sleep apnoea 2021 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 122 participants
  Very low

Continuous positive airway pressure (CPAP) vs no 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 · 57 participants
  Very low

Prevention of UI after radical: one active treatment vs another active treatment (PFMT + penile vibration pre and post‐operation versus PFMT pre and post‐operation)

• Conservative management for postprostatectomy urinary incontinence 2015 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported

Prevention of UI after radical: one active treatment vs another active treatment (pre‐operative PFMT + electrical stimulation versus pre‐operative PFMT)

• Conservative management for postprostatectomy urinary incontinence 2015 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 34 participants
  Very low

Sclerotherapy plus compression vs sclerotherapy (any sclerosant)

• Treatment for telangiectasias and reticular veins 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 93 participants
  Low

Acupuncture vs placebo

It is very uncertain whether acupuncture changes quality of life: anxiodepressive symptomatology compared with placebo (very low certainty).

• Interventions for treating hyperemesis gravidarum 2016 · Cochrane Headline outcomes only
  RR 1.01 [0.73, 1.4]
  1 study · 36 participants
  Very low

Duodenum‐preserving pancreatic resection vs pancreaticoduodenectomy

• Duodenum‐preserving pancreatic resection versus pancreaticoduodenectomy for chronic pancreatitis 2016 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 146 participants
  Very low

Country-level edentulism prevalence (Global Burden of Disease) vs Low vs high edentulism prevalence

OHRQoL did not differ significantly by country-level edentulism prevalence; no pooled estimate was reported in the text (ungraded).

• Association between oral health-related quality of life and structural determinants of health among elderly… 2025 All outcomes

  Community-dwelling older adults across 25 countries · Across edentulism prevalence categories
  No statistically significant difference in OHRQoL based on edentulism prevalence (Fig. 4c).
  Studies not reported
  GRADE not reported

Country-level dental caries prevalence (Global Burden of Disease) vs Low vs high dental caries prevalence

Lower country-level dental caries prevalence was associated with better OHRQoL (low-prevalence pooled mean 81.5, 95% CI 76.5 to 86.6, higher than high-prevalence countries); statistically significant (ungraded).

• Association between oral health-related quality of life and structural determinants of health among elderly… 2025 All outcomes

  Community-dwelling older adults across 25 countries · Low dental caries prevalence
  MEAN 81.5 [76.5, 86.6]
  Studies not reported
  GRADE not reported

Country-level periodontal disease prevalence (Global Burden of Disease) vs Low vs high periodontal disease prevalence

OHRQoL did not differ significantly by country-level periodontal disease prevalence; no pooled estimate was reported in the text (ungraded).

• Association between oral health-related quality of life and structural determinants of health among elderly… 2025 All outcomes

  Community-dwelling older adults across 25 countries · Across periodontal disease prevalence categories
  No statistically significant difference in OHRQoL based on periodontal disease prevalence (Fig. 4b).
  Studies not reported
  GRADE not reported

Prevention of UI after radical: one active treatment vs another active treatment (PFMT pre and post‐operation versus PFMT post‐operation)

The review found no eligible studies for this question.

• Conservative management for postprostatectomy urinary incontinence 2015 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Reactive air surfaces vs alternating pressure (active) air surfaces

The review found no eligible studies for this question.

• Reactive air surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Reactive fibre surfaces vs alternating pressure (active) air surfaces

The review found no eligible studies for this question.

• Alternative reactive support surfaces (non‐foam and non‐air‐filled) for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Reactive gel surfaces on operating tables followed by foam surfaces on ward beds vs alternating pressure (active) air surfaces on operating tables and subsequently on ward beds

The review found no eligible studies for this question.

• Alternative reactive support surfaces (non‐foam and non‐air‐filled) for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Reactive water surfaces vs alternating pressure (active) air surfaces

The review found no eligible studies for this question.

• Alternative reactive support surfaces (non‐foam and non‐air‐filled) for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found