What do systematic reviews say?

High feedback vs low feedback of routine prenatal ultrasound

It is very uncertain whether high feedback changes women's views of level of feedback compared with low feedback of routine prenatal ultrasound (very low certainty).

• High feedback versus low feedback of prenatal ultrasound for reducing maternal anxiety and improving maternal health… 2015 · Cochrane Headline outcomes only
  RR 3.3 [0.73, 14.85]
  2 studies · 148 participants
  Very low

High feedback vs low feedback of routine prenatal ultrasound

High feedback showed no clear difference in maternal anxiety ‐ throughout pregnancy compared with low feedback of routine prenatal ultrasound (low certainty).

• High feedback versus low feedback of prenatal ultrasound for reducing maternal anxiety and improving maternal health… 2015 · Cochrane Headline outcomes only
  SMD 0.1
  3 studies · 346 participants
  Low
• High feedback versus low feedback of prenatal ultrasound for reducing maternal anxiety and improving maternal health… 2015 · Cochrane Headline outcomes only
  SMD 0.23
  1 study · 40 participants
  Low

High feedback vs low feedback of routine prenatal ultrasound

High feedback may leads to higher cessation of alcohol compared with low feedback of routine prenatal ultrasound (low certainty).

• High feedback versus low feedback of prenatal ultrasound for reducing maternal anxiety and improving maternal health… 2015 · Cochrane Headline outcomes only
  RR 2.96 [1.15, 7.6]
  1 study · 129 participants
  Low

High feedback vs low feedback of routine prenatal ultrasound

High feedback may leads to higher cessation of smoking compared with low feedback of routine prenatal ultrasound (low certainty).

• High feedback versus low feedback of prenatal ultrasound for reducing maternal anxiety and improving maternal health… 2015 · Cochrane Headline outcomes only
  RR 2.93 [1.25, 6.86]
  1 study · 129 participants
  Low

Biofeedback vs counseling

• Biofeedback for treatment of irritable bowel syndrome 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 29 participants
  Low

Multi‐component psychological intervention (with biofeedback) vs no intervention

• Biofeedback for treatment of irritable bowel syndrome 2019 · Cochrane Headline outcomes only
  no estimate extracted
  3 studies · 101 participants
  Very low

Multi‐component psychological intervention (with biofeedback) vs attention control

• Biofeedback for treatment of irritable bowel syndrome 2019 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 80 participants
  Very low

Ventilation feedback training plus exercise vs exercise

• Breathing exercises for chronic obstructive pulmonary disease 2012 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 73 participants
  Moderate

Intervention not reported

• Home telemonitoring and remote feedback between clinic visits for asthma 2016 · Cochrane Headline outcomes only
  no estimate extracted
  3 studies · 149 participants
  Moderate