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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)

1,645 questions in 107 reviews · Wounds

current versions
No studies 651 · 39.6%Ungraded 84 · 5.1%Very low 554 · 33.7%Low 283 · 17.2%Moderate 64 · 3.9%High 9 · 0.5%

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
Distilled water vs cooled boiled water
Healing rate · people with fractures
Water for wound cleansing (2022) · Cochrane
no estimate extractedNRNo studies
Distilled water vs cooled boiled water
Cost analysis · people with fractures
Water for wound cleansing (2022) · Cochrane
no estimate extractedNRNo studies
Distilled water vs cooled boiled water
Pain · people with fractures
Water for wound cleansing (2022) · Cochrane
no estimate extractedNRNo studies
Distilled water vs cooled boiled water
Patient satisfaction · people with fractures
Water for wound cleansing (2022) · Cochrane
no estimate extractedNRNo studies
Tap water vs no wound cleansing
Healing rate · people with anal fissures
Water for wound cleansing (2022) · Cochrane
no estimate extractedNRNo studies
Tap water vs no wound cleansing
Cost analysis · people with anal fissures
Water for wound cleansing (2022) · Cochrane
no estimate extractedNRNo studies
Tap water vs no wound cleansing
Pain · people with anal fissures
Water for wound cleansing (2022) · Cochrane
no estimate extracted1 study · 52 participantsLow
Tap water vs no wound cleansing
Patient satisfaction · people with anal fissures
Water for wound cleansing (2022) · Cochrane
no estimate extracted2 studies · 102 participantsLow
Tap water vs normal saline
Infection · people with acute and chronic wounds
Water for wound cleansing (2022) · Cochrane
RR 0.84 [0.59, 1.19]8 studies · 2204 participantsVery low
Tap water vs normal saline
Wounds healed · people with acute and chronic wounds
Water for wound cleansing (2022) · Cochrane
RR 0.57 [0.3, 1.07]2 studies · 79 participantsVery low
Negative pressure wound therapy vs standard dressing
Mortality (proportion of participants dying in each group at · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
RR 0.78 [0.47, 1.3]11 studies · 6384 participantsLow
Negative pressure wound therapy vs standard dressing
Surgical site infection (proportion of participants in each group with SSI; · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
RR 0.73 [0.63, 0.85]44 studies · 11403 participantsModerate
Negative pressure wound therapy vs standard dressing
Dehiscence (proportion of participants in each group with wound dehiscence; · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
RR 0.97 [0.82, 1.16]23 studies · 8724 participantsModerate
Negative pressure wound therapy vs standard dressing
Reoperation (proportion of participants in each group requiring reoperation for reasons related to wound; · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
no estimate extracted18 studies · 6272 participantsLow
Negative pressure wound therapy vs standard dressing
Seroma (proportion of participants in each group with seroma; · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
RR 0.82 [0.65, 1.05]15 studies · 5436 participantsLow
Negative pressure wound therapy vs standard dressing
Haematoma (proportion of participants in each group with haematoma; · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
RR 0.79 [0.48, 1.3]17 studies · 5909 participantsVery low
Negative pressure wound therapy vs standard dressing
Skin blisters (proportion of participants in each group with at least one skin blister; · adult patients with surgical wounds healing by primary closure
Negative pressure wound therapy for surgical wounds healing by primary closure (2022) · Cochrane
RR 3.55 [1.43, 8.77]11 studies · 5015 participantsLow
Hydrogel dressings vs gauze and saline
Complete wound healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
RR 5.33 [1.73, 16.42]1 study · 60 participantsVery low
Hydrogel dressings vs alginate gel
Time‐to‐ulcer healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs alginate gel
Health‐related quality of life · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs alginate gel
Costs · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs manuka honey
Complete wound healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
RR 0.75 [0.46, 1.21]1 study · 108 participantsVery low
Hydrogel dressings vs manuka honey
Incidence of wound infection · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
RR 2 [0.81, 4.94]1 study · 108 participantsVery low
Hydrogel dressings vs manuka honey
Change in ulcer size · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs manuka honey
Time‐to‐ulcer healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs manuka honey
Health‐related quality of life · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs manuka honey
Costs · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressing vs hydrocolloid
Complete ulcer healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs gauze and saline
Incidence of wound infection · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressing vs hydrocolloid
Incidence of wound infection · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressing vs hydrocolloid
Change in ulcer size · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extracted1 study · 84 participantsVery low
Hydrogel dressing vs hydrocolloid
Time‐to‐ulcer healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressing vs hydrocolloid
Health‐related quality of life · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressing vs hydrocolloid
Costs · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs gauze and saline
Changes in ulcer size (cm²) · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
MD 1.51 study · 60 participantsVery low
Hydrogel dressings vs gauze and saline
Time‐to‐ulcer healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs gauze and saline
Health‐related quality of life · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs gauze and saline
Costs · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs alginate gel
Complete wound healing · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs alginate gel
Incidence of wound infection · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
no estimate extractedNRNo studies
Hydrogel dressings vs alginate gel
Change in ulcer size: percent reduction in ulcer area at 4 weeks · people with venous leg ulcers
Hydrogel dressings for venous leg ulcers (2022) · Cochrane
MD 41.81 study · 20 participantsVery low
Laser therapy vs no treatment
Scar severity ‐ 585‐nm Pulsed‐Dye Laser (PDL) versus no treatment ‐ patient self‐assessment of scar improvement of 50% or higher ‐ hypertrophic and keloid scars ‐ · patients with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
RR 1.96 [1.11, 3.45]NRLow
Laser therapy vs no treatment
Scar severity ‐ Fractional CO2 Laser versus no treatment ‐ VBS (higher scores = worse scar appearance) ‐ keloid scars ‐ · patients with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
no estimate extractedNRVery low
Laser therapy vs no treatment
Scar severity ‐ Fractional CO2 Laser versus no treatment ‐ POSAS scale (higher scores = worse scar appearance) ‐ hypertrophic scars ‐ · patients with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
no estimate extractedNRVery low
Laser therapy vs other treatments
Scar severity ‐ 585‐nm Pulsed‐Dye Laser (PDL) versus Triamcinolone acetonide (TAC) ‐ Vancouver Burn Scar (VBS) (Higher score = worse scar appearance) ‐ hypertrophic scars ‐ · participants with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
no estimate extractedNRVery low
Laser therapy vs other treatments
Scar severity ‐ 585‐nm PDL versus TAC ‐ patient self‐assessment of scar improvement of 50% or higher, or patients considering the scar better or much better ‐ hypertrophic and keloid scars ‐ · participants with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
OR 0.81NRVery low
Laser therapy vs other treatments
Incidence and severity of treatment‐related adverse effects ‐ 585‐nm PDL versus TAC: sequelae ‐ hypertrophic and keloid scars ‐ · participants with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
RR 0.09 [0.01, 1.45]NRVery low
Laser therapy vs other treatments
Incidence and severity of treatment‐related adverse effects ‐ 585‐nm PDL versus TAC ‐ mild to moderate pain related to treatment ‐ hypertrophic and keloid scars ‐ · participants with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
RR 0.9NRVery low
Laser therapy vs other treatments
Scar severity ‐ 585‐nm PDL versus 5‐FU ‐ patient self‐assessment of scar improvement of 50% or higher ‐ hypertrophic and keloid scars ‐ · participants with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
OR 0.81NRVery low
Laser therapy vs other treatments
Incidence and severity of treatment‐related adverse effects ‐ 585‐nm PDL versus 5‐FU ‐ mild to moderate pain related to treatment ‐ hypertrophic and keloid scars ‐ · participants with hypertrophic and keloid scars
Laser therapy for treating hypertrophic and keloid scars (2022) · Cochrane
RR 0.9NRVery low