Findings

What do systematic reviews say?

209 questions · 223 findings · 85 reviews

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No studies found 112 · 50.2%GRADE not reported 59 · 26.5%Very low 18 · 8.1%Low 17 · 7.6%Moderate 14 · 6.3%High 3 · 1.3%

Medically assisted hydration vs usual care

Quality of life · adults aged 18 years and older receiving palliative care

The review found no eligible studies for this question.

1 finding from 1 review

Medically assisted hydration for adults receiving palliative care 2023 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D vs placebo

Quality of life · premenopausal women (age 18–32.7 years)

The review found no eligible studies for this question.

1 finding from 1 review

Calcium and vitamin D for increasing bone mineral density in premenopausal women 2023 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D plus calcium vs placebo

Quality of life · premenopausal women (ages 18–36 years)

The review found no eligible studies for this question.

1 finding from 1 review

Calcium and vitamin D for increasing bone mineral density in premenopausal women 2023 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Calcium vs placebo

Quality of life · premenopausal women (age 18−47.3 years)

The review found no eligible studies for this question.

1 finding from 1 review

Calcium and vitamin D for increasing bone mineral density in premenopausal women 2023 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

CBT vs inactive control (usual care care, attention control, waitlist)

Quality of life · People aged 12 years and over with painful TMD lasting 3 months or longer

The review found no eligible studies for this question.

1 finding from 1 review

Psychological therapies for temporomandibular disorders (TMDs) 2022 · Cochrane All outcomes
This outcome was not measured for this comparison.
Studies not reported
No studies found

Any orthodontic (non-surgical) treatment to correct posterior crossbite or expand the top teeth vs No treatment or another orthodontic treatment

Quality of life · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…

The review found no eligible studies for this question.

1 finding from 1 review

Orthodontic treatment for posterior crossbites 2021 · Cochrane All outcomes
no estimate extracted
0 studies
No studies found

Ketogenic diet (KD) vs usual care

Quality of life · adults (aged 16 years and over) with drug‐resistant epilepsy

The review found no eligible studies for this question.

1 finding from 1 review

Ketogenic diets for drug‐resistant epilepsy 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Ketogenic diet (KD) vs other KDs

Quality of life · children (aged 4 months to 16 years) with drug‐resistant epilepsy

The review found no eligible studies for this question.

1 finding from 1 review

Ketogenic diets for drug‐resistant epilepsy 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Ketogenic diet (KD) vs other KDs

Quality of life · adults (aged 18 years and over) with drug‐resistant epilepsy

The review found no eligible studies for this question.

1 finding from 1 review

Ketogenic diets for drug‐resistant epilepsy 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Ketogenic diet (KD) vs usual care

Quality of life · children (aged 1 to 18 years) with drug‐resistant epilepsy

It is very uncertain whether ketogenic diet (KD) changes quality of life compared with usual care (very low certainty).

1 finding from 1 review

Ketogenic diets for drug‐resistant epilepsy 2020 · Cochrane Headline outcomes only
OR 16
1 study · 57 participants
Very low

Green tea extract supplementation vs placebo

Quality of life · adults (aged at least 18 years)

The review found no eligible studies for this question.

1 finding from 1 review

Green tea (Camellia sinensis) for the prevention of cancer 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Initiation of prophylactic therapy guided by colonoscopy vs initiation of prophylactic therapy immediately after surgery

Quality of life · adult participants (> 16 years of age) undergoing intestinal resection due to Crohn's disease

The review found no eligible studies for this question.

1 finding from 1 review

Colonoscopy‐guided therapy for the prevention of post‐operative recurrence of Crohn’s disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intensification of prophylactic therapy guided by colonoscopy vs intensification guided by clinical recurrence

Quality of life · adult participants (> 16 years of age) undergoing intestinal resection due to Crohn's disease

The review found no eligible studies for this question.

1 finding from 1 review

Colonoscopy‐guided therapy for the prevention of post‐operative recurrence of Crohn’s disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Quality of life · adults aged ≥ 18 years with a diagnosis of glenohumeral osteoarthritis who have not responded to non‐operative treatments

1 finding from 1 review

Shoulder replacement surgery for osteoarthritis and rotator cuff tear arthropathy 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 41 participants
Low

Usual care with ivabradine vs Placebo, no intervention or usual care (with or without placebo)

Quality of life · patients with chronic heart failure with preserved ejection fraction

2 findings from 1 review

Ivabradine as adjuvant treatment for chronic heart failure 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 179 participants
Low
Ivabradine as adjuvant treatment for chronic heart failure 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Usual care with ivabradine vs Placebo, no intervention or usual care (with or without placebo)

Quality of life · adults (≥ 18 years of age) with a diagnosis of chronic heart failure with reduced ejection fraction (HFrEF)

2 findings from 1 review

Ivabradine as adjuvant treatment for chronic heart failure 2020 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 2102 participants
Low
Ivabradine as adjuvant treatment for chronic heart failure 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 60 participants
Low

Intervention not reported

Quality of life · adult (≥ 18 years of age) patients receiving mechanical ventilation (via either an endotracheal tube or a tracheostomy) for acute…

1 finding from 1 review

Oxygen targets in the intensive care unit during mechanical ventilation for acute respiratory distress syndrome: a… 2020 · Cochrane Headline outcomes only
no estimate extracted
0 participants
GRADE not reported

Mechanical tongue cleaning (tongue scraper) vs No tongue cleaning

Quality of life · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for managing halitosis 2019 · Cochrane All outcomes
Quality of life was a prespecified secondary outcome. None of the 44 included studies in the review (across all comparisons) reported quality-of-life data (review-wide evidence gap).
0 studies
No studies found

Summary of findings: cycled vs culture‐based antibiotic therapy

Quality of life · children (aged 1 to 12 years) with CF and a newly isolated PA infection

The review found no eligible studies for this question.

1 finding from 1 review

Treatments for preventing recurrence of infection with Pseudomonas aeruginosa in people with cystic fibrosis 2019 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Exercise vs control immediately post intervention

Quality of life · people with multiple sclerosis

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for preventing falls in people with multiple sclerosis 2019 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found