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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
Summary of findings table ‐ Combined hormonal contraception (estrogen plus progestin) vs no contraception
Acute respiratory distress syndrome ‐ not measured · COVID‐19 positive patients
Risk of thromboembolism in patients with COVID‐19 who are using hormonal contraception (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Any type of hormonal contraception (estrogen plus progestin or progestin‐only) vs no contraception
Mortality ‐ not measured · COVID‐19 positive patients
Risk of thromboembolism in patients with COVID‐19 who are using hormonal contraception (2023) · Cochrane
no estimate extractedNRNo studies
Cannabis‐based medicines vs placebo medication
Proportion of participants reporting no worse than mild pain by 14 days after start of treatment · adults with cancer pain
Cannabis‐based medicines and medical cannabis for adults with cancer pain (2023) · Cochrane
no estimate extractedNRNo studies
Remdesivir and standard care vs standard care (plus/minus placebo)
Quality of life · non‐hospitalised adults with mild COVID‐19
Remdesivir for the treatment of COVID‐19 (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs levetiracetam
Mortality or neurodevelopment disability at 18 to 24 months' corrected age ‐ not reported · clinically diagnosed neonatal seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs phenytoin
Proportion of infants who achieve seizure control after the first loading dose of ASM ‐ not reported · neonates with EEG‐confirmed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs phenytoin
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · neonates with EEG‐confirmed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs phenytoin
Proportion of infants who achieve seizure control after maximal loading dose ‐ not reported · neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs phenytoin
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs Lorazepam
Proportion of infants who achieve seizure control after the maximal loading dose of ASM ‐ not reported · Neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs Lorazepam
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · Neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital vs levetiracetam
Mortality or neurodevelopment disability at 18 to 24 months' corrected age ‐ not reported · neonates with EEG‐confirmed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenytoin vs lorazepam
Proportion of infants who achieve seizure control after the maximal loading dose of ASM ‐ not reported · neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenytoin vs lorazepam
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital + bumetanide vs phenobarbital alone
Proportion of infants who achieve seizure control after the maximal loading dose of the ASM ‐ not reported · neonates with EEG‐confirmed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Phenobarbital + bumetanide vs phenobarbital alone
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · neonates with EEG‐confirmed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Lignocaine vs benzodiazepines
Proportion of infants who achieve seizure control after first loading dose of ASM ‐ not reported · neonates with EEG‐confirmed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Maintenance ASM vs no maintenance ASM after achieving seizure control
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · neonates with clinically diagnosed seizures
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Treatment of clinical and electrographic seizures vs treatment of clinical seizures alone
Mortality or neurodevelopmental disability at 18 to 24 months' corrected age ‐ not reported · neonates
Anti‐seizure medications for neonates with seizures (2023) · Cochrane
no estimate extractedNRNo studies
'As needed' administration (e.g. based on pain scales) vs 'as scheduled' administration (e.g. a predefined time interval)
Major neurodevelopmental disability in children aged 18 to 24 months or three to five years old ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
'As needed' administration (e.g. based on pain scales) vs 'as scheduled' administration (e.g. a predefined time interval)
Cognitive and educational outcomes in children more than five years old ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
'As needed' administration (e.g. based on pain scales) vs 'as scheduled' administration (e.g. a predefined time interval)
Severe (defined as stage 3 or greater) retinopathy of prematurity ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
'As needed' administration (e.g. based on pain scales) vs 'as scheduled' administration (e.g. a predefined time interval)
Severe (grade 3 or greater) intraventricular hemorrhage (IVH) on cranial ultrasound ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Continuous infusion vs bolus administration
All‐cause mortality during initial hospitalization ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Continuous infusion vs bolus administration
Major neurodevelopmental disability in children aged 18 to 24 months or three to five years old ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Continuous infusion vs bolus administration
Cognitive and educational outcomes in children more than five years old ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Continuous infusion vs bolus administration
Severe (defined as stage 3 or greater) retinopathy of prematurity ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Continuous infusion vs bolus administration
Severe (grade 3 or greater) intraventricular hemorrhage (IVH) on cranial ultrasound ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
'As needed' administration (e.g. based on pain scales) vs 'as scheduled' administration (e.g. a predefined time interval)
Pain · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
'As needed' administration (e.g. based on pain scales) vs 'as scheduled' administration (e.g. a predefined time interval)
All‐cause mortality during initial hospitalization ‐ not reported · postoperative pain in neonates
Systemic opioid regimens for postoperative pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Mean change in BCVA from baseline · people with large macular hole
Pars plana vitrectomy with internal limiting membrane flap versus pars plana vitrectomy with conventional… (2023) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Speed of visual acuity improvement · people with large macular hole
Pars plana vitrectomy with internal limiting membrane flap versus pars plana vitrectomy with conventional… (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs no treatment/placebo
Parent satisfaction with care provided in the NICU (as measured by a validated instrument/tool)—not reported · neonates exposed to procedural pain
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs oral sweet solution or non‐pharmacological intervention
Any harms · neonates exposed to procedural pain
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs oral sweet solution or non‐pharmacological intervention
Episodes of bradycardia—not reported · neonates exposed to procedural pain
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs oral sweet solution or non‐pharmacological intervention
Episodes of apnea—not reported · neonates exposed to procedural pain
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs oral sweet solution or non‐pharmacological intervention
Hypotension—not reported · neonates exposed to procedural pain
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs oral sweet solution or non‐pharmacological intervention
Parent satisfaction with care provided in the NICU—not reported · neonates exposed to procedural pain
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs other analgesics
Any harms · procedural pain in neonates
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs other analgesics
Episodes of bradycardia—not reported · procedural pain in neonates
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Opioids vs other analgesics
Parent satisfaction with care provided in the NICU—not reported · procedural pain in neonates
Opioids for procedural pain in neonates (2023) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Quality of life up to longest · non‐hospitalised adults with mild COVID‐19
Antiplatelet agents for the treatment of adults with COVID‐19 (2023) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Adverse events during study treatment · non‐hospitalised adults with mild COVID‐19
Antiplatelet agents for the treatment of adults with COVID‐19 (2023) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Adverse events during study treatment · hospitalised adults with COVID‐19 (moderate to severe disease)
Antiplatelet agents for the treatment of adults with COVID‐19 (2023) · Cochrane
no estimate extractedNRNo studies
Diclofenac vs placebo
Outcome№ of participants(studies) · children with acute postoperative pain
Diclofenac for acute postoperative pain in children (2023) · Cochrane
no estimate extractedNRNo studies
Diclofenac vs opioids
Serious adverse events during study period (not reported) · children with acute postoperative pain
Diclofenac for acute postoperative pain in children (2023) · Cochrane
no estimate extractedNRNo studies
Diclofenac vs paracetamol
Outcome№ of participants(studies) · children with acute postoperative pain
Diclofenac for acute postoperative pain in children (2023) · Cochrane
no estimate extractedNRNo studies
Diclofenac vs bupivacaine
Outcome№ of participants(studies) · children with acute postoperative pain
Diclofenac for acute postoperative pain in children (2023) · Cochrane
no estimate extractedNRNo studies
Diclofenac vs placebo
Serious adverse events during study period (not reported) · children with acute postoperative pain
Diclofenac for acute postoperative pain in children (2023) · Cochrane
no estimate extractedNRNo studies
Diclofenac vs opioids
Outcome№ of participants(studies) · children with acute postoperative pain
Diclofenac for acute postoperative pain in children (2023) · Cochrane
no estimate extractedNRNo studies