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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

15,213 questions in 2,394 reviews

current versions
No studies 15,213 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Anxiolytics vs inactive control
Cardiovascular mortality · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Anxiolytics vs inactive control
Serious adverse events · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Anxiolytics vs inactive control
Quality of sleep · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Anxiolytics vs inactive control
Quality of life · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Anxiolytics vs inactive control
All‐cause mortality · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine derivatives vs inactive control
Cardiovascular mortality · adults with central sleep apnoea associated with heart failure in adults
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine derivatives vs inactive control
Serious adverse events · adults with central sleep apnoea associated with heart failure in adults
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine derivatives vs inactive control
Quality of sleep · adults with central sleep apnoea associated with heart failure in adults
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine derivatives vs inactive control
Quality of life · adults with central sleep apnoea associated with heart failure in adults
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine derivatives vs inactive control
All‐cause mortality · adults with central sleep apnoea associated with heart failure in adults
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Hypnotics vs inactive control
Cardiovascular mortality · adults with primary central sleep apnoea
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Hypnotics vs inactive control
Serious adverse events · adults with primary central sleep apnoea
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Hypnotics vs inactive control
Quality of sleep · adults with primary central sleep apnoea
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Hypnotics vs inactive control
Quality of life · adults with primary central sleep apnoea
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Hypnotics vs inactive control
All‐cause mortality · adults with primary central sleep apnoea
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Carbonic anhydrase inhibitors vs inactive control
Serious adverse events · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Carbonic anhydrase inhibitors vs inactive control
Quality of sleep · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Carbonic anhydrase inhibitors vs inactive control
Quality of life · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Carbonic anhydrase inhibitors vs inactive control
All‐cause mortality · adults with central sleep apnoea associated with heart failure
Pharmacological treatment for central sleep apnoea in adults (2023) · Cochrane
no estimate extractedNRNo studies
Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone
Change in class of malocclusion · people with thalassaemia
Treatment of dental and orthodontic complications in thalassaemia (2023) · Cochrane
no estimate extractedNRNo studies
Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone
Resolution or reduction in severity of any other dental complication: reduction in DMFT index · people with thalassaemia
Treatment of dental and orthodontic complications in thalassaemia (2023) · Cochrane
no estimate extractedNRNo studies
Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone
Resolution or reduction in severity of any other dental complication: reduction in severity of periodontitis (measured by reduction in clinical attachment loss) · people with thalassaemia
Treatment of dental and orthodontic complications in thalassaemia (2023) · Cochrane
no estimate extractedNRNo studies
Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone
Resolution or reduction in severity of any other dental complication: oral infections (measured by reduction in or resolution of lesions such as periapical cysts, abscesses, or space infections) · people with thalassaemia
Treatment of dental and orthodontic complications in thalassaemia (2023) · Cochrane
no estimate extractedNRNo studies
Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone
Resolution or reduction in severity of any other dental complication: systemic infections (measured by number of episodes after treatment for dental complications under antibiotic prophylaxis) · people with thalassaemia
Treatment of dental and orthodontic complications in thalassaemia (2023) · Cochrane
no estimate extractedNRNo studies
Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone
Any other adverse effects related to treatment · people with thalassaemia
Treatment of dental and orthodontic complications in thalassaemia (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant targeted treatment (BRAF/MEK inhibition) vs no neoadjuvant treatment
Quality of Life ‐ not measured · stage III or IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (talimogene laherparepvec) vs no neoadjuvant treatment
Quality of Life ‐ not measured · stage III and IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs adjuvant immunotherapy (combined ipilimumab and nivolumab)
Overall survival (OS) · stage III cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs adjuvant immunotherapy (combined ipilimumab and nivolumab)
Time to recurrence ‐ not measured · stage III cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs adjuvant immunotherapy (combined ipilimumab and nivolumab)
Quality of life ‐ not measured · stage III cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs neoadjuvant immunotherapy (nivolumab)
Quality of life ‐ not measured · stage III and IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs neoadjuvant immunotherapy (sequential treatment with ipilimumab then nivolumab)
Overall survival (OS) · stage III cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs neoadjuvant immunotherapy (sequential treatment with ipilimumab then nivolumab)
Time to response ‐ not measured · stage III cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant treatment vs no neoadjuvant treatment
Overall response rate (ORR), · stage III or IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) vs neoadjuvant immunotherapy (sequential treatment with ipilimumab then nivolumab)
Quality of life ‐ not measured · stage III cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (high dose interferon) plus chemotherapy vs neoadjuvant chemotherapy
Overall survival (OS) · stage III and IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (high dose interferon) plus chemotherapy vs neoadjuvant chemotherapy
Adverse events · stage III and IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (high dose interferon) plus chemotherapy vs neoadjuvant chemotherapy
Time to recurrence — not reported · stage III and IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant immunotherapy (high dose interferon) plus chemotherapy vs neoadjuvant chemotherapy
Quality of life — not reported · stage III and IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Neoadjuvant treatment vs no neoadjuvant treatment
Quality of life ‐ not measured · stage III or IV cutaneous melanoma
Neoadjuvant treatment for stage III and IV cutaneous melanoma (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus clenbuterol vs alglucosidase alfa plus placebo
Infusion reactions · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus clenbuterol vs alglucosidase alfa plus placebo
Need for respiratory support · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus clenbuterol vs alglucosidase alfa plus placebo
Use of a walking aid / wheelchair · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus clenbuterol vs alglucosidase alfa plus placebo
QoL · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus clenbuterol vs alglucosidase alfa plus placebo
Treatment‐related adverse events · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus albuterol vs alglucosidase alfa plus placebo
Infusion reactions · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus albuterol vs alglucosidase alfa plus placebo
Need for respiratory support · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus albuterol vs alglucosidase alfa plus placebo
Use of a walking aid / wheelchair · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
Alglucosidase alfa plus albuterol vs alglucosidase alfa plus placebo
QoL · 13 people with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies
VAL‐1221 vs alglucosidase alfa
Change in FVC (% predicted) · adults with LOPD
Enzyme replacement therapy for late‐onset Pompe disease (2023) · Cochrane
no estimate extractedNRNo studies