What do systematic reviews say?

Foam surfaces vs alternating pressure (active) air surfaces

It is very uncertain whether foam surfaces changes time to pressure ulcer development compared with alternating pressure (active) air surfaces (very low certainty).

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 2105 participants
  Very low

Foam surfaces vs reactive gel surfaces

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 270 participants
  Very low

Foam surfaces vs reactive gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive foam and gel surfaces

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 182 participants
  Very low

Foam surfaces vs reactive foam and gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive foam and gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive foam and gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs alternating pressure (active) air surfaces

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 76 participants
  Very low

Foam surfaces vs reactive foam and gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs reactive foam and gel surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Foam surfaces vs alternating pressure (active) air surfaces

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  3 studies · 2181 participants
  Very low

Foam surfaces vs alternating pressure (active) air surfaces

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 267 participants
  Low
• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 233 participants
  Low

Foam surfaces vs alternating pressure (active) air surfaces

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 1 participants
  Moderate

Foam surfaces vs reactive air surfaces

Foam surfaces may leads to higher proportion of participants developing a new pressure ulcer compared with reactive air surfaces (low certainty).

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  RR 2.4 [1.04, 5.54]
  4 studies · 229 participants
  Low

Foam surfaces vs reactive air surfaces

The review found no eligible studies for this question.

• Foam surfaces for preventing pressure ulcers 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Extraction of lower deciduous canines vs No active treatment (control)

It is very uncertain whether extraction of lower deciduous canines changes amount of crowding (lower incisor crowding, change) at 1-2 years compared with no active treatment (control) (very low certainty).

• Orthodontic treatment for crowded teeth in children 2021 · Cochrane All outcomes

  1 to 2 years
  MD -4.76 [-6.24, -3.28]
  1 study · 83 participants
  Very low