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
Azole vs terbinafine
Mycological cure · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 0.77 [0.68, 0.88]17 studies · 2544 participantsModerate
Griseofulvin vs azole
Quality of life · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
no estimate extractedNRNo studies
Griseofulvin vs terbinafine
Clinical cure · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 0.32 [0.14, 0.72]4 studies · 270 participantsLow
Griseofulvin vs terbinafine
Mycological cure · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 0.64 [0.46, 0.9]5 studies · 465 participantsLow
Griseofulvin vs terbinafine
Adverse events · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 2.09 [1.15, 3.82]2 studies · 100 participantsLow
Griseofulvin vs terbinafine
Recurrence rate · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
no estimate extractedNRNo studies
Griseofulvin vs terbinafine
Quality of life · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
no estimate extractedNRNo studies
Combination terbinafine plus azole vs terbinafine monotherapy
Clinical cure · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 1.41 [1.01, 1.97]1 study · 176 participantsVery low
Combination terbinafine plus azole vs terbinafine monotherapy
Mycological cure · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 1.41 [1.08, 1.83]1 study · 176 participantsVery low
Combination terbinafine plus azole vs terbinafine monotherapy
Adverse events · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 0.64 [0.34, 1.21]1 study · 176 participantsLow
Combination terbinafine plus azole vs terbinafine monotherapy
Recurrence rate · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
no estimate extractedNRNo studies
Azole vs terbinafine
Adverse events · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 1 [0.86, 1.17]9 studies · 1762 participantsModerate
Combination terbinafine plus azole vs terbinafine monotherapy
Quality of life · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
no estimate extractedNRNo studies
Azole vs terbinafine
Recurrence rate · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 1.11 [0.68, 1.79]5 studies · 282 participantsLow
Azole vs terbinafine
Quality of life · participants with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
no estimate extractedNRNo studies
Terbinafine vs placebo
Clinical cure · patients with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 6 [3.96, 9.08]8 studies · 1006 participantsHigh
Terbinafine vs placebo
Mycological cure · patients with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 4.53 [2.47, 8.33]8 studies · 1006 participantsHigh
Terbinafine vs placebo
Adverse events · patients with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 1.13 [0.87, 1.47]4 studies · 399 participantsModerate
Terbinafine vs placebo
Recurrence rate · patients with confirmed toenail onychomycosis
Oral antifungal medication for toenail onychomycosis (2017) · Cochrane
RR 0.05 [0.01, 0.38]1 study · 35 participantsLow
Moisturisers vs no treatment (no moisturiser)
Change from baseline in disease severity according to participants ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Atopiclair vs vehicle
Number of participants reporting an adverse event · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.03 [0.79, 1.33]4 studies · 430 participantsModerate
Atopiclair vs vehicle
Change from baseline in disease severity according to the investigators · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extracted4 studies · 426 participantsModerate
Atopiclair vs vehicle
Number of participants who experienced a flare · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 0.18 [0.11, 0.31]3 studies · 397 participantsModerate
Atopiclair vs vehicle
Change in use of topical active treatment ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Atopiclair vs vehicle
Change from baseline in health‐related quality of life ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Change from baseline in disease severity according to the participants (number of participants who considered their skin to have improved) · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.28 [1.06, 1.53]1 study · 129 participantsLow
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Participant satisfaction · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extracted1 study · 38 participantsLow
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Number of participants reporting an adverse event · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.65 [1.16, 2.34]1 study · 129 participantsModerate
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Change from baseline in disease severity according to the investigators (number of participants who improved according to the investigators) · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.4 [1.14, 1.71]1 study · 129 participantsModerate
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Number of participants who experienced a flare · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 0.47 [0.24, 0.92]1 study · 44 participantsLow
Moisturisers vs no treatment (no moisturiser)
Participant satisfaction ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Change in use of topical active treatment ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Urea‐containing moisturisers vs vehicle, placebo or no moisturiser
Change from baseline in health‐related quality of life ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Change from baseline in disease severity as assessed by the participants(number of participants who considered their dry skin to have improved) · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.22 [1.01, 1.48]1 study · 134 participantsModerate
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Participant satisfaction ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Number of participants reporting an adverse event · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 0.9 [0.68, 1.19]2 studies · 385 participantsModerate
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Change from baseline in disease severity as assessed by the investigators · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extracted1 study · 249 participantsHigh
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Number of participants who experienced a flare ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Change in use of topical active treatment ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Glycerin/glycerol‐containing moisturisers vs vehicle or placebo
Change from baseline in health‐related quality of life ‐ not measured · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extractedNRNo studies
Oat‐containing moisturisers vs vehicle or no moisturiser
Change from baseline in disease severity as assessed by the participants (number of participants who considered their skin to have improved) · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.11 [0.84, 1.46]1 study · 50 participantsLow
Moisturisers vs no treatment (no moisturiser)
Number of participants reporting an adverse event · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
15.34 [0.9, 261.64]1 study · 173 participantsLow
Oat‐containing moisturisers vs vehicle or no moisturiser
Participant satisfaction · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.06 [0.74, 1.52]1 study · 50 participantsVery low
Oat‐containing moisturisers vs vehicle or no moisturiser
Number of participants reporting an adverse event · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 15.34 [0.9, 261.64]1 study · 173 participantsLow
Oat‐containing moisturisers vs vehicle or no moisturiser
Change from baseline in disease severity as assessed by the investigators · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extracted3 studies · 272 participantsLow
Oat‐containing moisturisers vs vehicle or no moisturiser
Number of participants who experienced a flare · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 0.31 [0.12, 0.77]1 study · 43 participantsLow
Oat‐containing moisturisers vs vehicle or no moisturiser
Total amount of topical corticosteroids used · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extracted2 studies · 222 participantsLow
Oat‐containing moisturisers vs vehicle or no moisturiser
Change from baseline in health‐related quality of life · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
no estimate extracted3 studies · 226 participantsLow
All moisturisers vs vehicle, placebo or no moisturiser
Change from baseline in disease severity as assessed by the participants (number of participants who considered their skin to have improved) · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 2.46 [1.16, 5.23]5 studies · 572 participantsLow
All moisturisers vs vehicle, placebo or no moisturiser
Participant satisfaction · people with eczema
Emollients and moisturisers for eczema (2017) · Cochrane
RR 1.35 [0.77, 2.36]3 studies · 298 participantsLow