Gap finder

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)

1,886 questions in 74 reviews · Skin

current versions
No studies 542 · 28.7%Ungraded 130 · 6.9%Very low 326 · 17.3%Low 434 · 23%Moderate 348 · 18.5%High 106 · 5.6%

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 ‐ Other therapies (cryotherapy) vs other therapies (fractional CO2 laser)
Health‐related quality of life ‐ not reported · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Other therapies (cryotherapy) vs other therapies (fractional CO2 laser)
Long‐term hair regrowth ≥ 75% ‐ not reported · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Oral classical immunosuppressants (betamethasone) vs oral classical immunosuppressants (azathioprine, methotrexate, prednisolone)
Short‐term hair regrowth ≥ 75% (between 12 and 26 weeks of · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
RR 1.67 [0.96, 2.88]2 studies · 80 participantsLow
Summary of findings table ‐ Oral classical immunosuppressants (betamethasone) vs oral classical immunosuppressants (azathioprine, methotrexate, prednisolone)
Incidence of serious adverse events · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
no estimate extracted4 studies · 154 participantsVery low
Summary of findings table ‐ Oral classical immunosuppressants (betamethasone) vs oral classical immunosuppressants (azathioprine, methotrexate, prednisolone)
Health‐related quality of life ‐ not reported · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Oral classical immunosuppressants (betamethasone) vs oral classical immunosuppressants (azathioprine, methotrexate, prednisolone)
Long‐term hair regrowth ≥ 75% (greater than 26 weeks of · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Intralesional classical immunosuppresants (betamethasone or triamcinolone) vs placebo
Short‐term hair regrowth ≥ 75% (between 12 and 26 weeks of · adults with alopecia areata
Treatments for alopecia areata: a network meta‐analysis (2023) · Cochrane
RR 13.84 [0.87, 219.76]1 study · 231 participantsVery low
Corticosteroids vs no corticosteroids
Disease‐specific mortality ‐ SJS and TEN (time to · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
RR 2.55 [0.72, 9.03]2 studies · 56 participantsVery low
Intravenous immunoglobulin (IVIG) vs no IVIG
Adverse effects leading to discontinuation of SJS/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs no etanercept
Disease‐specific mortality ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs no etanercept
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs no etanercept
Total hospital length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs no etanercept
Adverse effects leading to discontinuation of SJT/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs no etanercept
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs no cyclosporin
Disease‐specific mortality ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs no cyclosporin
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs no cyclosporin
Total hospital length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs no cyclosporin
Adverse effects leading to discontinuation of SJT/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Corticosteroids vs no corticosteroids
Time to complete re‐epithelialisation – not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs no cyclosporin
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Intravenous immunoglobulin (IVIG) vs corticosteroids
Disease‐specific mortality · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Intravenous immunoglobulin (IVIG) vs corticosteroids
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Intravenous immunoglobulin (IVIG) vs corticosteroids
Total hospital length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Intravenous immunoglobulin (IVIG) vs corticosteroids
Adverse effects leading to discontinuation of SJT/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Intravenous immunoglobulin (IVIG) vs corticosteroids
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs corticosteroids
Disease‐specific mortality (time to · treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
RR 0.51 [0.16, 1.63]1 study · 91 participantsLow
Etanercept vs corticosteroids
Time to complete re‐epithelialisation ‐ not reported · treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs corticosteroids
Intensive care unit (ICU) length of stay ‐ not reported · treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs corticosteroids
Total hospital length of stay ‐ not reported · treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Corticosteroids vs no corticosteroids
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs corticosteroids
Adverse effects leading to discontinuation of SJS/TEN therapy ‐ not reported (see comments) · treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs corticosteroids
Disease‐specific mortality ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs corticosteroids
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs corticosteroids
Total hospital length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs corticosteroids
Adverse effects leading to discontinuation of SJT/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs corticosteroids
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs intravenous immunoglobulin (IVIG)
Disease‐specific mortality ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs intravenous immunoglobulin (IVIG)
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs intravenous immunoglobulin (IVIG)
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs intravenous immunoglobulin (IVIG)
Total hospital length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Corticosteroids vs no corticosteroids
Total hospital length of stay – not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs intravenous immunoglobulin (IVIG)
Adverse effects leading to discontinuation of SJS/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs intravenous immunoglobulin (IVIG)
Disease‐specific mortality (time to · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
RR 0.13 [0.02, 0.98]1 study · 22 participantsVery low
Cyclosporin vs intravenous immunoglobulin (IVIG)
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs intravenous immunoglobulin (IVIG)
Total hospital length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs intravenous immunoglobulin (IVIG)
Adverse effects leading to discontinuation of SJT/TEN therapy ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Cyclosporin vs intravenous immunoglobulin (IVIG)
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs cyclosporin
Disease‐specific mortality ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs cyclosporin
Time to complete re‐epithelialisation ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies
Etanercept vs cyclosporin
Intensive care unit (ICU) length of stay ‐ not reported · Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and SJS/TEN overlap syndrome
Systemic interventions for treatment of Stevens‐Johnson syndrome (SJS), toxic epidermal necrolysis (TEN),… (2022) · Cochrane
no estimate extractedNRNo studies